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Journal articles on the topic '30% hydrogen peroxide'

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Published: 5 June 2025
Last updated: 1 August 2025

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1

ITO, Yuko, and Yasuko MOMOI. "Bleaching using 30% hydrogen peroxide and sodium hydrogen carbonate." Dental Materials Journal 30, no. 2 (2011): 193–98. http://dx.doi.org/10.4012/dmj.2010-124.

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2

Bloodworth, A. J., and Michael D. Spencer. "Oxymetallation XXII. Hydroperoxymercuriation using 30% hydrogen peroxide." Journal of Organometallic Chemistry 386, no. 3 (1990): 299–304. http://dx.doi.org/10.1016/0022-328x(90)80002-h.

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3

Kwon, So Ran, Li Yiming, Udochukwu Oyoyo, and Raydolfo M. Aprecio. "Dynamic Model of Hydrogen Peroxide Diffusion Kinetics into the Pulp Cavity." Journal of Contemporary Dental Practice 13, no. 4 (2012): 440–45. http://dx.doi.org/10.5005/jp-journals-10024-1165.

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ABSTRACT Aim To measure the time course hydrogen peroxide penetration into the pulp cavity and evaluate short-term tooth color changes after bleaching. Materials and methods Twenty extracted human canines were sectioned, pulp tissue removed and the cavity enlarged. Teeth were painted with nail varnish to leave a 6-mm diameter circle on the buccal surface. Baseline color was measured spectrophotometrically. Teeth were randomized into a control group (n = 10) treated with 30 μl of glycerin base and a bleaching group (n = 10) exposed to 30 μl of 40% hydrogen peroxide for 1 hour. A linear low dens
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4

Hossain, Rayhan, Jimmy J. Dickinson, Allen Apblett, and Nicholas F. Materer. "Detection of Hydrogen Peroxide in Liquid and Vapors Using Titanium(IV)-Based Test Strips and Low-Cost Hardware." Sensors 22, no. 17 (2022): 6635. http://dx.doi.org/10.3390/s22176635.

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Titanium(IV) solutions are known to detect hydrogen peroxide in solutions by a colorimetric method. Xplosafe’s XploSens PS commercial titanium(IV)-based peroxide detection test strips are used to detect hydrogen peroxide in liquids. The use of these test strips as gas-phase detectors for peroxides was tested using low-cost hardware. The exposure of these strips to hydrogen peroxide liquid or gas leads to the development of an intense yellow color. For liquids, a digital single-lens reflex camera was used to quantify the color change using standardized solutions containing between 50 and 500 pp
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Solanki, Manali N., Kailash Madivalayya Attur, Kiran A. Vachhani, Nikunj A. Patel, Moksha A. Shah, and Dhruvi M. Doshi. "Phytochemicals in vital tooth bleaching: Spectrophotometric evaluation of efficacy with papaya, pineapple, or kiwi extracts and 30% hydrogen peroxide." Journal of Conservative Dentistry and Endodontics 27, no. 7 (2024): 760–64. http://dx.doi.org/10.4103/jcde.jcde_201_24.

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Context: Dental bleaching, a common cosmetic treatment, typically uses hydrogen peroxide (H2O2). Yet, the search for natural options has prompted an investigation into fruit extract efficacies such as papain, bromelain, and actinidin for tooth whitening. Aim: The aim of this study was to evaluate the efficacy of 30% hydrogen peroxide and fruit extracts (papaya, pineapple, and kiwi) on human enamel using a spectrophotometer at different time intervals. Study Design: Eighty maxillary anterior teeth were stained with tea solution and evaluated for baseline color. They were then divided into four
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CANDAN, CANDAN. "A new method: the usage of natural zeolite as a killer chemical for hydrogen peroxide during the hydrogen peroxide bleaching." Industria Textila 70, no. 06 (2019): 519–22. http://dx.doi.org/10.35530/it.070.06.1523.

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In the study, the usage possibility of natural zeolite as hydrogen peroxide killer during the hydrogen peroxide bleaching was investigated. Natural zeolite from Gördes region with 30 µm particle size was used during the hydrogen peroxide bleaching of the cotton fabric as a hydrogen peroxide killer agent. ICP-MS elemental analysis of the natural zeolite was performed. Hydrogen peroxide concentration of the bleaching liquor was performed by quantitative analysis. It was seen that natural zeolite is so efficient to decrease in hydrogen peroxide concentration in the bleaching bath. It is thought t
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7

Narendranath, N. V., K. C. Thomas, and W. M. Ingledew. "Urea Hydrogen Peroxide Reduces the Numbers of Lactobacilli, Nourishes Yeast, and Leaves No Residues in the Ethanol Fermentation." Applied and Environmental Microbiology 66, no. 10 (2000): 4187–92. http://dx.doi.org/10.1128/aem.66.10.4187-4192.2000.

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ABSTRACT Urea hydrogen peroxide (UHP) at a concentration of 30 to 32 mmol/liter reduced the numbers of five Lactobacillus spp. (Lactobacillus plantarum, L. paracasei,Lactobacillus sp. strain 3, L. rhamnosus, andL. fermentum) from ∼107 to ∼102CFU/ml in a 2-h preincubation at 30°C of normal-gravity wheat mash at ∼21 g of dissolved solids per ml containing normal levels of suspended grain particles. Fermentation was completed 36 h after inoculation of Saccharomyces cerevisiae in the presence of UHP, even when wheat mash was deliberately contaminated (infected) withL. paracasei at ∼107 CFU/ml. The
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8

Fouler, Sophie G., Alka B. Trivedi, and Naofumi Kitabatake. "Detoxification of Citrinin and Ochratoxin A by Hydrogen Peroxide." Journal of AOAC INTERNATIONAL 77, no. 3 (1994): 631–37. http://dx.doi.org/10.1093/jaoac/77.3.631.

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Abstract The effects of hydrogen peroxide on citrinin and ochratoxin A toxicity were examined using HeLa cells. The citrinin was completely detoxified by prior incubation with 0.05% hydrogen peroxide for 30 min at room temperature, and the toxic compound(s) that resulted from heating citrinin at 100°C were also detoxified upon reheating it with hydrogen peroxide. On the other hand, ochratoxin A was not detoxified by hydrogen peroxide at room temperature, but its toxicity was reduced by heating ochratoxin A with hydrogen peroxide under alkaline conditions.
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9

Al-Ajouriyeh, Hala, Imad Ismail, Badih Samra, and Fahed Sahyoun. "Effect of Cucumber Mosaic Virus on Proline and Hydrogen Peroxide Content in Some Pepper Hybrids Grown in Lattakia Governorate, Syria." Arab Journal for Plant Protection 39, no. 1 (2021): 39–46. http://dx.doi.org/10.22268/ajpp-39.1.039046.

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Al-Ajouriyeh, H., I. Ismail, B. Samra and F. Sahyouni. 2021. Effect of Cucumber Mosaic Virus on Proline and Hydrogen Peroxide Content in Some Pepper Hybrids Grown in Lattakia Governorate, Syria. Arab Journal of Plant Protection, 39(1): 39-46. A study was conducted at Al-Muturki village in Lattakia Governorate during 2019/2020 growing season to investigate the effect Cucumber mosaic virus (CMV) infection on the proline and hydrogen peroxide (H2O2) content of four pepper hybrids (Taline F1, Amani F1, Harek F1 and Marvilo F1) at three periods post viral inoculation (15, 30 and 45 days). The exper
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10

Armon, R., N. Laot, O. Lev, H. Shuval, and B. Fattal. "Controlling biofilm formation by hydrogen peroxide and silver combined disinfectant." Water Science and Technology 42, no. 1-2 (2000): 187–92. http://dx.doi.org/10.2166/wst.2000.0312.

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Controlling biofilm growth in drinking and wastewater pipelines has attracted considerable scientific and technological attention over recent years. In this work, we have examined the biofilm control effectivity of a combined disinfectant comprised of hydrogen peroxide and silver ions. The performance of the combined disinfectant was compared to the effectivity of each of the ingredients alone and to the effectivity of chlorine disinfectant. Biofilm growth was investigated on uncoated and CaCO3 coated galvanized iron samples over prolonged exposure duration. It was found that the CaCO3 film do
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11

Villa, Edward, Rozana Asfour, Nelson Moy, and Michael Klamut. "A Case of Accidental 30% Hydrogen Peroxide Ingestion." American Journal of Gastroenterology 109 (October 2014): S455. http://dx.doi.org/10.14309/00000434-201410002-01545.

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12

Svetozarević, Milica Milan, Nataša Šekuljica, Zorica Knežević-Jugović, and Dušan Mijin. "Optimization and kinetic study of anthraquinone dye removal from colored wastewater using soybean seed as a source of peroxidase for environmental welfare." Macedonian Journal of Chemistry and Chemical Engineering 39, no. 2 (2020): 197. http://dx.doi.org/10.20450/mjcce.2020.2150.

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As water contamination emerges as a serious threat to the environment, ventures for cleaner and sustainable solutions are continuously being developed. The present study investigates the ability of crude peroxidase extract from soybean seeds to degrade the anthraquinone dye Acid Violet 109. The influence of the essential parameters pH, dye concentration, hydrogen peroxide dosage, and temperature were inspected. The enzyme had 81.9 % biodegradation at pH 4 in 30 min with 0.1 U peroxidase, 40 mg/l dye concentration, and 1 mM hydrogen peroxide. Considering that substrate concentration can cause r
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13

Yang, Yan, and De Liang Li. "Study on Microetching Performance of Hydrogen Peroxide / Sulfuric Acid System." Advanced Materials Research 233-235 (May 2011): 614–18. http://dx.doi.org/10.4028/www.scientific.net/amr.233-235.614.

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In order to get the optimum technological conditions of the hydrogen peroxide /sulfuric acid system,the static corrosion method was used to study the related parameters including compositions of the microetching system and the operation temperature. The results of the experiment show that the microetching performance of the hydrogen peroxide /sulfuric acid system was excellent under optimum conditions of maintaining temperature at 30~35, copper concentration about 25 g/L, hydrogen peroxide 30~40 g/L and sulfuric acid content 70~90 g/L . The process of microetching is stable and controllable.
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14

Pysarenko, O. A., Yu I. Silenko, and M. V. Khrebor. "CLINICAL OBSERVATION OF DISCOLORING TREATMENT OF NON-VITAL TEETH BY BLEACHING." Ukrainian Dental Almanac, no. 1 (March 21, 2018): 83–87. http://dx.doi.org/10.31718/2409-0255.1.2018.20.

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A dental cosmetic is actual for everyone. Whitening of teeth can be the method of lab treatmen. Whitening facilities which are used with this goal often contain peroxide, hydrogen, carbamide peroxide, and combinations of peroxides hydrogen with sodium perborate.
 The treatment of 3 patients with discoloration of non-vital teeth was done. In two cases the reason of color change was the use of paste containing resorcinol-formalin. Discoloring of root of the tooth was caused by necrotic damage of the pulp. Clinically satisfactory results were received after 1-4 visits in 1-2 days.
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15

Novakov, Nikolina, Vladislav Mandić, Brankica Kartalović, et al. "Comparison of the Efficacy of Hydrogen Peroxide and Salt for Control of Fungal Infections on Brown Trout (Salmo trutta) Eggs." Acta Scientiae Veterinariae 46, no. 1 (2018): 5. http://dx.doi.org/10.22456/1679-9216.82813.

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Background: Fungal infections can cause serious problems infecting fish eggs, especially unfertilized or dead eggs. In the past, this problem was solved by using very effective chemicals such as malachite green and formalin. But, due to its toxicity and carcinogenicity, malachite green was banned for use in fish intended for human consumption. Formalin also has been banned in most countries. Chemicals and drugs recommended for use to treat fungal infections are hydrogen peroxide, salt, potassium permanganate etc. The goal of the present study was to determine and compare the efficacy of antifu
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16

Miao, Zhao, Tong Jiang Peng, Yong Guang Xi, and Wei Yang. "Preparation of Expanding Vermiculite by Chemical and Microwave Methods." Advanced Materials Research 96 (January 2010): 155–60. http://dx.doi.org/10.4028/www.scientific.net/amr.96.155.

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Based on the characters of expanding and layer adsorbing of vermiculite，industrial vermiculite samples from Weili Mine of Xinjiang Province were expanded by both chemical and microwave chemical methods. The influences to the exfoliation ratio of different parameters such as concentration of hydrogen peroxide, power of the microwave, heating time, ratio of solid-liquid, immersion time were discussed. And the expanded mechanism of vermiculite was also analyzed. The results indicate that the expanded times increase with the increasing of concentration of hydrogen peroxide, and the best expanding
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17

Kutova, O. Yu, M. G. Dusheyko, B. O. Loboda, and T. Yu Obukhova. "Changing the conductivity of porous silicon with silver nanoparticles/silicon structures when detecting hydrogen peroxide." Технология и конструирование в электронной аппаратуре, no. 4 (2018): 28–32. http://dx.doi.org/10.15222/tkea2018.4.28.

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The authors investigate the influence of hydrogen peroxide concentration on the conductivity of the porous silicon with silver nanoparticles / crystalline silicon system. A simple resistive sensor with Ag nanoparticles was used as a catalyst in order to study processes occuring in porous silicon during hydrogen peroxide detection. Porous silicon was formed using a two-stage metal-assisted chemical etching with Ag nanoparticles. It was shown that two simultaneous processes are involved here: carrier extraction to porous silicon caused by interaction with hydrogen peroxide molecules and heating
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18

Šekuljica, Nataša Ž., Nevena Ž. Prlainović, Andrea B. Stefanović, et al. "Decolorization of Anthraquinonic Dyes from Textile Effluent Using Horseradish Peroxidase: Optimization and Kinetic Study." Scientific World Journal 2015 (2015): 1–12. http://dx.doi.org/10.1155/2015/371625.

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Two anthraquinonic dyes, C.I. Acid Blue 225 and C.I. Acid Violet 109, were used as models to explore the feasibility of using the horseradish peroxidase enzyme (HRP) in the practical decolorization of anthraquinonic dyes in wastewater. The influence of process parameters such as enzyme concentration, hydrogen peroxide concentration, temperature, dye concentration, and pH was examined. The pH and temperature activity profiles were similar for decolorization of both dyes. Under the optimal conditions, 94.7% of C.I. Acid Violet 109 from aqueous solution was decolorized (treatment time 15 min, enz
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19

Sekaringgalih, Ratri, and Alif Nur Laili Rachmah. "TREATMENT OF THE GELATIN WASTEWATER WITH OZONE PEROXIDE ADVANCED OXIDATION PROCESS." Menara: Jurnal Teknik Sipil 18, no. 2 (2023): 130–37. http://dx.doi.org/10.21009/jmenara.v18i2.35143.

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This research aims to decrease the level of COD, BOD5, and color in the liquid waste of the gelatin industry by using the ozonation process and hydrogen peroxide in order to meet the quality standards of the seaweed industrial waste. The reaction between ozone and peroxide called the peroxone process is one of the Advanced Oxidation Processes (AOPs). The combination of ozone with peroxide can result in a cheaper process. The result shows the lowest COD at the time of ozonation 160 minutes with the addition of hydrogen peroxide 30 ml was 932.39 mg/L (37.03%), the lowest BOD5 at ozonation 160 mi
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20

Al Hussani, Muhammad Fadhel, and Aseel Najah Sabour. "Effect of Rutin on the Histological Structure of the Heart and Some Biochemical Indicators of Oxidative Stress in Male Albino Rats." Pakistan Journal of Medical and Health Sciences 16, no. 7 (2022): 653–57. http://dx.doi.org/10.53350/pjmhs22167653.

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The current study aimed to know the effect of rutin at a dose of (30 mg/kg of body weight) and (60 mg/kg of body weight) on heart tissues in two groups of normal rats and two groups of rats exposed to oxidative stress with 1% hydrogen peroxide for the duration of the experiment., as well as the effects of rutin on the percentage of some antioxidants such as glutathione GSH, and the percentage of malonaldehyde (MDA) in the serum. (48) male rats were used, they were divided into six groups.: the first group (control) included eight males, and the second group hydrogen peroxide H2O2 1%, H2O2, and
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21

Wang, Zhen, Dongling Yu, Chunfang Zheng, et al. "Ecophysiological Analysis of Mangrove Seedlings Kandelia obovata Exposed to Natural Low Temperature at Near 30°N." Journal of Marine Science and Engineering 7, no. 9 (2019): 292. http://dx.doi.org/10.3390/jmse7090292.

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In this study, mangrove seedlings Kandelia obovata were firstly introduced to Zhoushan in Eastern China at 29° 93′ N from Xuwen in South China at 20° 34′ N in April 2016. In order to analyze ecophysiological differences of K. obovata seedlings domesticated in Zhoushan, the growth status and antioxidant system of K. obovata exposed to natural low temperature were studied through situ measurements. The results showed that K. obovata seedlings introduced artificially to Zhoushan grew slowly when subjected to natural cold stress. The chlorophyll contents exhibited a decreased tendency. In addition
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22

Capitulino, Jessica Dayanne, Geovani Soares de Lima, Carlos Alberto Vieira de Azevedo, et al. "Influence of Foliar Application of Hydrogen Peroxide on Gas Exchange, Photochemical Efficiency, and Growth of Soursop under Salt Stress." Plants 12, no. 3 (2023): 599. http://dx.doi.org/10.3390/plants12030599.

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Hydrogen peroxide at low concentrations has been used as a salt stress attenuator because it induces a positive response in the antioxidant system of plants. This study aimed to assess the gas exchange, quantum yield, and development of soursop plants cv. Morada Nova grown with saline water irrigation and foliar hydrogen peroxide application. The experiment was carried out under greenhouse conditions using a randomized block design in a 4 × 4 factorial scheme corresponding to four levels of electrical conductivity of irrigation water, ECw (0.8, 1.6, 2.4, and 3.2 dS m−1), and four doses of hydr
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23

Rokaya, Mohammad E., Khaled Beshr, Abeer Hashem Mahram, Samah Samir Pedir, and Kusai Baroudi. "Evaluation of Extraradicular Diffusion of Hydrogen Peroxide during Intracoronal Bleaching Using Different Bleaching Agents." International Journal of Dentistry 2015 (2015): 1–7. http://dx.doi.org/10.1155/2015/493795.

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Objectives. Extra radicular diffusion of hydrogen peroxide associated with intracoronal teeth bleaching was evaluated.Methods. 108 intact single rooted extracted mandibular first premolars teeth were selected. The teeth were instrumented with WaveOne system and obturated with gutta percha and divided into four groups (n=27) according to the bleaching materials used. Each main group was divided into three subgroups (n=9) according to the time of extra radicular hydrogen peroxide diffusion measurements at 1, 7, and 14 days: group 1 (35% hydrogen peroxide), group 2 (35% carbamide peroxide), group
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24

Shi, Chun Wei, Xiao Yan Zhang, Shan Lin Zhao, Ping Chen, and Yu Ting Bai. "Double Oxidants Combined Oxidation of Oleic Acid Preparation of Azelaic Acid." Advanced Materials Research 804 (September 2013): 94–97. http://dx.doi.org/10.4028/www.scientific.net/amr.804.94.

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Oleic acid was oxidized to azelaic acid by ozone and hydrogen peroxide as an oxidant jointly in this paper. The effect of major factors, such as the volume and concentration of hydrogen peroxide, the volume and concentration of ozone. The results show that the yield of azelaic acid was up to 71 %, when the oxidation was taken under the following condition: oleic acid 20g, phosphotungstic acid hydrate 0.6g , 30% hydrogen peroxide solution 60ml, reaction temperature 70°C, reaction time 8h.
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Zhao, Xiao Ling. "Preparation of Silver Nano-Particles by CO(NH2)2·H2O2." Advanced Materials Research 391-392 (December 2011): 1244–47. http://dx.doi.org/10.4028/www.scientific.net/amr.391-392.1244.

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This article will present using chemical reduction to prepare silver nano-particles, which is a certain improvement base on the traditional hydrogen peroxide (H2O2) Silver ammonia by using a new reductant urea peroxide (CO (NH2) 2•H2O2) to replace hydrogen peroxide. Hydrogen Peroxide silver ammonia is widely used in the nano-silver particles Preparation, however, the nano-silver particles prepared in traditional ways is not homogeneous and very easy agglomerated, therefore, in this experimental by using of urea peroxide as a reductant, under condition of temperature 30°C, 45 nm homogeneous nan
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Drewnowska, Ewa, Agnieszka Wróblewska, and Alicja Gawarecka. "The Role of the Additive in the Form of Na2SO4 in the Epoxidation of Dialllyl Ether." Applied Mechanics and Materials 797 (November 2015): 347–51. http://dx.doi.org/10.4028/www.scientific.net/amm.797.347.

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This work presents the research on the influence of the addition of the appropriate amounts of the inorganic salt (Na2SO4) on the reduction of the ineffective decomposition of hydrogen peroxide (H2O2) and simultaneously on the increase of the efficiency of hydrogen peroxide conversion. The studies were carried out for the epoxidation of diallyl ether to allyl-glycidyl ether with 30 wt% hydrogen peroxide on the TS-1 catalyst and in the presence of acetonitrile as the solvent. The studies were conducted in the following conditions: the temperature of 70°C, the molar ratio of diallyl ether/hydrog
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Seo, S. Y., W. S. Choi, M. J. Kim, and T. Tran. "Leaching of a Cu-Co ore from Congo using sulphuric acidhydrogen peroxide leachants." Journal of Mining and Metallurgy, Section B: Metallurgy 49, no. 1 (2013): 1–7. http://dx.doi.org/10.2298/jmmb120103035s.

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A Cu-Co ore from Katinga Province, the Republic of Congo containing 1.5% Co and 1.6% Cu was tested to determine the leachability of Cu and Co using sulphuric acid and hydrogen peroxide mixtures at different conditions. Without hydrogen peroxide, the maximum extraction of copper and cobalt were found to be ~80% and ~15%, respectively when the acid concentration was varied between 0.36 - 1.1M. When hydrogen peroxide was added (0.008-0.042M), Cu recovery was enhanced to ~90%. Recoveries of ~90% of Co could be achieved at 20?C, using leachants consisting of 0.36M sulphuric acid and 0.025M hydrogen
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Zhang, Y., W. Wei, X. Yang, and F. Wei. "Reduction of Fe and Ni in Fe-Ni-O systems." Journal of Mining and Metallurgy, Section B: Metallurgy 49, no. 1 (2013): 13–20. http://dx.doi.org/10.2298/jmmb120208038z.

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A Cu-Co ore from Katinga Province, the Republic of Congo containing 1.5% Co and 1.6% Cu was tested to determine the leachability of Cu and Co using sulphuric acid and hydrogen peroxide mixtures at different conditions. Without hydrogen peroxide, the maximum extraction of copper and cobalt were found to be ~80% and ~15%, respectively when the acid concentration was varied between 0.36 - 1.1M. When hydrogen peroxide was added (0.008-0.042M), Cu recovery was enhanced to ~90%. Recoveries of ~90% of Co could be achieved at 20?C, using leachants consisting of 0.36M sulphuric acid and 0.025M hydrogen
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Alasri, Anouar, Michèle Valverde, Christine Roques, Georges Michel, Corinne Cabassud, and Philippe Aptel. "Sporocidal properties of peracetic acid and hydrogen peroxide, alone and in combination, in comparison with chlorine and formaldehyde for ultrafiltration membrane disinfection." Canadian Journal of Microbiology 39, no. 1 (1993): 52–60. http://dx.doi.org/10.1139/m93-008.

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The sporocidal properties of peracetic acid, hydrogen peroxide, chlorine, and formaldehyde were compared in vitro using a dilution–neutralization micromethod. A combination of peracetic acid and hydrogen peroxide was also tested to assess their interactions. The activities of these agents, which are widely used as disinfectants, were evaluated against Bacillus spore isolates found on stored membranes and collection cultures. Peracetic acid and chlorine exhibited an excellent antimicrobial activity, with a destruction of 105 spores/mL after 5 min of contact. Generally the effects of the biocide
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salih, Nareen yousif. "A Randomized Comparative study of efficacy and safety between %20 and %30 Hydrogen peroxide in the Treatment of Actinic keratosis." Advanced medical journal 9, no. 3 (2024): 61–72. http://dx.doi.org/10.56056/amj.2024.278.

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Background and objectives: Actinic keratosis is a premalignant skin lesion that presents clinically as a sand-like macule or papule on an erythematous base with a superficial scale due to atypical proliferation of keratinocytes and may progress to squamous cell carcinoma. The aim of this study was to compare the efficacy of hydrogen peroxide in treatment of actinic keratosis between two different concentrations (%20 and %30). Methods: This is a randomized open label therapeutic trial of twenty patients with actinic keratosis has been enrolled, it was conducted from April 2022 to August 2022 at
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Zhou, Cheng Ying, and Wei Qu. "Rapid Determination of Copper and Iron in Ore Leaching Solution by Iodometry." Advanced Materials Research 781-784 (September 2013): 2328–31. http://dx.doi.org/10.4028/www.scientific.net/amr.781-784.2328.

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This paper provides a pretreatment method for ore leaching solution by adding an agent level of hydrogen peroxide. Pretreatment temperature, agent level of hydrogen peroxide and pretreatment time were investigated. The results show that relative standard deviation of copper or iron in ore leaching solution determined by iodometry is less than 1.00% with good accuracy and precision under the following conditions: pretreatment temperature of 60°C, agent level of hydrogen peroxide 1.0mL, pretreatment time of 30 minutes. This pretreatment process is simpler, faster, easier to control, and less env
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Szopińska, Dorota. "Alleviation Of zinnia elegans Jacq. Seed Deterioration Using Hydrogen Peroxide and Organic Acids." Ecological Chemistry and Engineering S 21, no. 2 (2014): 309–26. http://dx.doi.org/10.2478/eces-2014-0024.

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Abstract The decrease of seed quality during storage is strongly associated with damage caused by free radicals. Some compounds of natural origin, known due to their antioxidative and antifungal properties, may be potentially used in organic production for seed treatment as an alternative to pesticides. The aim of the experiment was to study an ability of hydrogen peroxide and organic acid to improve germination, vigour and health of non-deteriorated and deteriorated zinnia seeds. Two seed samples, cv. Illumination and Orys, varying in initial infestation with fungi were tested. For deteriorat
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AL-Saikhan, Mohamed S., and Tarek A. Shalaby. "Effect of hydrogen peroxide (H2O2) treatment on physicochemical characteristics of tomato fruits during post-harvest storage." Australian Journal of Crop Science, no. 13(05) 2019 (May 20, 2019): 798–802. http://dx.doi.org/10.21475/ajcs.19.13.05.p1738.

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Tomato is a perishable vegetable crop and it faces several problems during marketing and storage. Postharvest losses during storage of tomato fruits are mainly due to decay. In this study, the effect of postharvest application of hydrogen peroxide on quality and decay of tomato fruits during storage under two storage temperatures (10 ºC and 20 ºC) was studied. Tomato fruits (Red rose cv.) at light red maturity stage were dipped in a solution of hydrogen peroxide (0, 5 and 15 mM) for 30 min, then air-dried at room temperature and stored at room temperature (20ºC) for three weeks in fridge (10ºC
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Bertacci, Angelica, Gianfranco Ulian, Daniele Moro, Stefano Chersoni, and Giovanni Valdrè. "In Vivo Effects of Two In-Office Vital Tooth Bleaching Systems on Enamel Permeability." Journal of Composites Science 5, no. 4 (2021): 98. http://dx.doi.org/10.3390/jcs5040098.

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Tooth bleaching is a common treatment for the amelioration of the aesthetic of discoloured teeth. In this context, there are two common approaches that employ concentrated solutions (30–40 wt.%) of either hydrogen peroxide or carbamide peroxide as bleaching agents. However, there is an ongoing debate on the possible adverse effects of these different treatments on tooth health, such as variation of the enamel structure, surface morphology, and chemistry, which also affect tooth sensitivity. In the present work, a study on the effect of the two bleaching agents, a 35 wt.% solution of hydrogen p
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Sergeychev, K., N. Lukina, L. Apasheva, M. Budnik, and E. Ovcharenko. "INFLUENCE OF SOLUTIONS OF HYDROGEN PEROXIDE OF DIFFERENT COMPOSITIONS ON THE SEEDS GERMINATION." Russian Journal of Biological Physics and Chemisrty 8, no. 2 (2024): 224–28. http://dx.doi.org/10.29039/rusjbpc.2023.0614.

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A method has been developed for producing pure hydrogen peroxide without admixture of NOx by replacing the nitrogen medium stabilizing the flare microwave discharge with water vapor when distilled water and its vapor at atmospheric pressure are treated with pure inert argon plasma. The dynamics of seed germination and development of cucumber seedlings in pure solutions of hydrogen peroxide, in solutions of medical 3% hydrogen peroxide stabilized with sodium benzoate, and in distilled water in the control were studied. The concentrations of hydrogen peroxide solutions in the range from 0,1 mg/l
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36

Pak, Daewon, and Wonseok Chang. "Decolorizing Dye Wastewater with Low Temperature Catalytic Oxidation." Water Science and Technology 40, no. 4-5 (1999): 115–21. http://dx.doi.org/10.2166/wst.1999.0582.

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Novel oxidation technology to decolorize dye wastewater was discussed and the feasibility of color removal with Fe/MgO catalyst fluidizing in a reactor under continuous flow was demonstrated at room temperature. In batch tests, the oxidation reaction of reactive and disperse dye with an oxidizing agent, hydrogen peroxide, in the presence of Fe/MgO catalyst was performed. Through the catalytic oxidation, dyes were oxidized to molecules with lower molecular weight and then mineralized based on TOC analysis. The influence of hydrogen peroxide and catalyst dosage on the catalytic oxidation rate wa
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Zun, Maria, Dorota Dwornicka, Katarzyna Wojciechowska, et al. "Kinetics of the decomposition and the estimation of the stability of 10% aqueous and non-aqueous hydrogen peroxide solutions." Current Issues in Pharmacy and Medical Sciences 27, no. 4 (2014): 213–16. http://dx.doi.org/10.1515/cipms-2015-0017.

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Abstract In this study, the stability of 10% hydrogen peroxide aqueous and non-aqueous solutions with the addition of 6% (w/w) of urea was evaluated. The solutions were stored at 20°C, 30°C and 40°C, and the decomposition of hydrogen peroxide proceeded according to first-order kinetics. With the addition of the urea in the solutions, the decomposition rate constant increased and the activation energy decreased. The temperature of storage also affected the decomposition of substance, however, 10% hydrogen peroxide solutions prepared in PEG-300, and stabilized with the addition of 6% (w/w) of ur
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Kordová, Tereza, Vladimír Scholtz, Josef Khun, Hana Soušková, Pavel Hozák, and Miroslav Čeřovský. "Inactivation of Microbial Food Contamination of Plastic Cups Using Nonthermal Plasma and Hydrogen Peroxide." Journal of Food Quality 2018 (July 16, 2018): 1–7. http://dx.doi.org/10.1155/2018/5616437.

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The inactivation effect of the combination of nonthermal plasma and hydrogen peroxide aerosol for the microbial decontamination of inner surface of cylindrical container buckets is studied on one bacterial and seven filamentous micromycete species and on airborne-contaminated cups. While the decontamination by single nonthermal plasma or hydrogen peroxide is not observable after 120 s, the strong decontamination by their combination occurs after 30 s of exposure. Moreover, observed total elimination of airborne contamination of plastic cups predetermines this method as a suitable alternative t
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Han, Xiaoman, Guihua Meng, Qian Wang, et al. "Mussel-inspired in situ forming adhesive hydrogels with anti-microbial and hemostatic capacities for wound healing." Journal of Biomaterials Applications 33, no. 7 (2018): 915–23. http://dx.doi.org/10.1177/0885328218810552.

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All kinds of commercially available wound dressings are clinically used as fleshly obstacles and therapeutic materials in opposition to microbial incursion. Few researches focused on effective-bleeding and anti-bacteria at the same time. In order to better solve this problem, two hydrogels were synthetized in this study. One is phosphate buffer solution-activated dopamine-modified-γ-poly glutamic acid (PBS-PD) hydrogel, the other one is cirsium setosum extracts-activated dopamine-modified-γ-poly glutamic acid (CSE-PD) hydrogel. The two hydrogels are prepared by applying an enzyme-catalyzed cro
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Jiang, Heng, Gang Chu, Hong Gong, and Qingdong Qiao. "Tin Chloride Catalysed Oxidation of Acetone with Hydrogen Peroxide to Tetrameric Acetone Peroxide." Journal of Chemical Research 23, no. 4 (1999): 288–89. http://dx.doi.org/10.1177/174751989902300421.

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SnCl4·5H2O and SnCl2·2H2O are efficient catalysts for the oxidation of acetone with 30% hydrogen peroxide at room temperature and produce tetrameric acetone peroxide which is identified by molecular weight determination, elemental analysis, FTIR, NMR and MS.
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41

Rahmati, Roxana, Behnam Nayebi, and Bita Ayati. "Investigating the effect of hydrogen peroxide as an electron acceptor in increasing the capability of slurry photocatalytic process in dye removal." Water Science and Technology 83, no. 10 (2021): 2414–23. http://dx.doi.org/10.2166/wst.2021.136.

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Abstract The hydrogen peroxide role in photocatalytic degradation of an anionic azo dye, Acid Orange 7 (AO7), was investigated in a slurry reactor. Commercial ZnO nanoparticles with an average size between 10 to 30 nm were used as catalysts. Optimum conditions for different parameters, including dye concentration (10–100 mg/L), catalyst concentration (0.1–0.5 g/L), and pH (5–10), were determined first in the absence of H2O2. Changes in the COD were measured for the optimum condition. The impact of adding hydrogen peroxide at different concentrations to the system operating at optimum condition
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42

Gottsauner, Maximilian J., Ioannis Michaelides, Barbara Schmidt, et al. "A prospective clinical pilot study on the effects of a hydrogen peroxide mouthrinse on the intraoral viral load of SARS-CoV-2." Clinical Oral Investigations 24, no. 10 (2020): 3707–13. http://dx.doi.org/10.1007/s00784-020-03549-1.

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Abstract Objectives SARS-CoV-2 is mainly transmitted by inhalation of droplets and aerosols. This puts healthcare professionals from specialties with close patient contact at high risk of nosocomial infections with SARS-CoV-2. In this context, preprocedural mouthrinses with hydrogen peroxide have been recommended before conducting intraoral procedures. Therefore, the aim of this study was to investigate the effects of a 1% hydrogen peroxide mouthrinse on reducing the intraoral SARS-CoV-2 load. Methods Twelve out of 98 initially screened hospitalized SARS-CoV-2-positive patients were included i
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Silva, André A. R. da, Luana L. de S. A. Veloso, Geovani S. de Lima, Carlos A. V. de Azevedo, Hans R. Gheyi, and Pedro D. Fernandes. "Hydrogen peroxide in the acclimation of yellow passion fruit seedlings to salt stress." Revista Brasileira de Engenharia Agrícola e Ambiental 25, no. 2 (2021): 116–23. http://dx.doi.org/10.1590/1807-1929/agriambi.v25n2p116-123.

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ABSTRACT The objective of the present study was to evaluate the effect of exogenous application of hydrogen peroxide on the emergence, growth and gas exchange of yellow passion fruit seedlings subjected to salt stress. The experiment was conducted in pots (Citropote®) under greenhouse conditions, in the municipality of Campina Grande, PB, Brazil. Treatments were distributed in a randomized block design, in a 4 x 4 factorial arrangement, with four levels of electrical conductivity of irrigation water (0.7, 1.4, 2.1 and 2.8 dS m-1) associated with four concentrations of hydrogen peroxide (0, 25,
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Silva, André A. R. da, Luana L. de S. A. Veloso, Geovani S. de Lima, Carlos A. V. de Azevedo, Hans R. Gheyi, and Pedro D. Fernandes. "Hydrogen peroxide in the acclimation of yellow passion fruit seedlings to salt stress." Revista Brasileira de Engenharia Agrícola e Ambiental 25, no. 2 (2021): 116–23. http://dx.doi.org/10.1590/1807-1929/agriambi.v25n2p116-123.

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ABSTRACT The objective of the present study was to evaluate the effect of exogenous application of hydrogen peroxide on the emergence, growth and gas exchange of yellow passion fruit seedlings subjected to salt stress. The experiment was conducted in pots (Citropote®) under greenhouse conditions, in the municipality of Campina Grande, PB, Brazil. Treatments were distributed in a randomized block design, in a 4 x 4 factorial arrangement, with four levels of electrical conductivity of irrigation water (0.7, 1.4, 2.1 and 2.8 dS m-1) associated with four concentrations of hydrogen peroxide (0, 25,
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SILVA, ANDRÉ ALISSON RODRIGUES DA, GEOVANI SOARES DE LIMA, CARLOS ALBERTO VIEIRA DE AZEVEDO, JESSICA DAYANNE CAPITULINO, HANS RAJ GHEYI, and LAURIANE ALMEIDA DOS ANJOS SOARES. "MULTIVARIATE ANALYSIS OF SOURSOP UNDER SALT STRESS AND EXOGENOUS APPLICATION OF HYDROGEN PEROXIDE1." Revista Caatinga 35, no. 4 (2022): 936–44. http://dx.doi.org/10.1590/1983-21252022v35n421rc.

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ABSTRACT The objective of this study was to evaluate, through multivariate data analysis, the effect of exogenous application of hydrogen peroxide on the photosynthetic pigments, gas exchange and growth of soursop seedlings under salt stress. The study was conducted in a greenhouse, at Federal University of Campina Grande - Paraíba. The assay was carried out from May to October 2018. The treatments were distributed in a randomized block design, in a 5 × 5 factorial arrangement, corresponding to five levels of irrigation water electrical conductivity - ECw (0.6-control, 1.2, 1.8, 2.4, and 3.0 d
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Banigo, Alma Tamunonengiofori, Laura Nauta, Bram Zoetebier, and Marcel Karperien. "Coaxial Bioprinting of Enzymatically Crosslinkable Hyaluronic Acid-Tyramine Bioinks for Tissue Regeneration." Polymers 16, no. 17 (2024): 2470. http://dx.doi.org/10.3390/polym16172470.

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Three-dimensional (3D) bioprinting has emerged as an important technique for fabricating tissue constructs with precise structural and compositional control. However, developing suitable bioinks with biocompatible crosslinking mechanisms remains a significant challenge. This study investigates extrusion-based bioprinting (EBB) using uniaxial or coaxial nozzles with enzymatic crosslinking (EC) to produce 3D tissue constructs in vitro. Initially, low-molecular-weight dextran-tyramine and hyaluronic acid-tyramine (LMW Dex-TA/HA-TA) bioink prepolymers were evaluated. Enzymatically pre-crosslinking
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47

Lan, Shan Hong, Chuan Lu Wang, Jia Hao Sun, and Heng Zhang. "Study on Treatment of Dyeing Wastewater by Fe0-H2O2 System." Advanced Materials Research 1048 (October 2014): 507–10. http://dx.doi.org/10.4028/www.scientific.net/amr.1048.507.

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Printing and dyeing wastewater contained difficult biochemical degradation of organic matters. It required advanced treatment after the biochemical treatment. In this paper, effeccts of pH, the amount of iron and hydrogen peroxide, the ratio of iron and hydrogen peroxide and reaction time on the Fe0-H2O2system were studied. The results showed that all the above factors were important to dyeing waste water treatment by Fe0-H2O2system. CODCrremoval efficiency could archive 65% when the initial pH was 3, the iron powder capacity was 1.5g/L,the volume of hydrogen peroxide was 1ml/L, the reaction t
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48

Pinheiro, Daniel Teixeira, Denise Cunha Fernandes dos Santos Dias, Laércio Junio da Silva, Maycon Silva Martins, and Fernando Luiz Finger. "Oxidative stress, protein metabolism, and physiological potential of soybean seeds under weathering deterioration in the pre-harvest phase." Acta Scientiarum. Agronomy 45 (November 22, 2022): e56910. http://dx.doi.org/10.4025/actasciagron.v45i1.56910.

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Weathering deterioration affects seed quality, especially in areas with excessive rainfall. This study aimed to evaluate the oxidative stress, physiological quality, and protein metabolism of seeds of different soybean cultivars under weathering deterioration at the pre-harvest phase. Six soybean cultivars (BMX Apolo, DM 6563, NS 5959, NA 5909, BMX Potência, and TMG 1175) were subjected to simulated rainfall at the R8 stage. Each level was divided into two applications at 72-h intervals: 60 mm (30 + 30), 120 mm (60 + 60), and 180 mm (90 + 90). Then, the seeds were harvested and evaluated for p
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Vieira, Alex Correia, Mario Cezar Oliveira, Adriana Castro Vieira Andrade, Mariana Ferreira Leite, Polyana Pedreira Pimenta, and Alisson Reinan De Oliveira Carneiro. "Influência dos agentes clareadores com alta concentração de peróxidos sobre a rugosidade superficial de diferentes tipos de compósitos." Full Dentistry in Science 13, no. 49 (2021): 100–105. http://dx.doi.org/10.24077/2021;1349-100105.

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This study aimed to evaluate the surface roughness of different types of composites after the application of two bleaching agents with high concentrations of peroxides. This study is an in vitro research that evaluated the microparticulate composite resin (Durafill, Heraeus-Kulzer), the microhybrid (Z250, 3M-ESPE), and nanohybrid composites (IPS Em press Direct, Ivoclar Vivadent), that were submitted to the action of 40% hydrogen peroxide (Opalescence Boost PF, Ultradent) and 37% carbamide peroxide (Power Bleaching Office 37%, BM4), simulating in-office dental bleaching. For this, 90 samples w
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Miranda, Carolina Baptista, Clovis Pagani, Ana Raquel Benetti, and Fábio da Silva Matuda. "Evaluation of the bleached human enamel by Scanning Electron Microscopy." Journal of Applied Oral Science 13, no. 2 (2005): 204–11. http://dx.doi.org/10.1590/s1678-77572005000200021.

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Since bleaching has become a popular procedure, the effect of peroxides on dental hard tissues is of great interest in research. Purpose: The aim of this in vitro study was to perform a qualitative analysis of the human enamel after the application of in-office bleaching agents, using Scanning Electron Microscopy (SEM). Materials and Methods: Twenty intact human third molars extracted for orthodontic reasons were randomly divided into four groups (n=5) treated as follows: G1- storage in artificial saliva (control group); G2- four 30-minute applications of 35% carbamide peroxide (total exposure
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