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Articles de revues sur le sujet « Acid method »

Auteur : Grafiati

Publié le 7 juin 2025

Mis à jour le 2 août 2025

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1

S., R. SAGI, APPA RAO K., and S. PRASADA RAO M. "A Titrimetric Method for the Determination of Oxalic and Malonic Acids in a Mixture." Journal of Indian Chemical Society Vol. 69, Oct 1992 (1992): 671–73. https://doi.org/10.5281/zenodo.6021322.

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Inorganic Chemistry Laboratories, Andhra University, Visakhapatnam-530 003 <em>Manuscript received 12 March 1992, revised 26 June 1992, accepted 17 July 1992</em> Oxalic and malonic acids can be oxidised quantitatively to carbon dioxide and water when refluxed for 120 min in >1.5 <em>M </em>sulphuric acid medium in the presence of four times the thallium(III) required for the quantitative oxidation. In the photochemical oxidation of the mixture only oxalic acid is oxidised while malonic acid remains unaffected when a chloride concentration, three times (or above) that of thallium(III) is pr

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2

Santosh Shinde, Dhiraj, and Nilesh Bhosale. "Analytical Method Determination of Betulinic Acid: A Review." International Journal of Science and Research (IJSR) 10, no. 7 (2021): 491–94. https://doi.org/10.21275/mr21704200035.

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3

Rahman, Fatinah Ab, Syarifah Abd Rahim, C. Tan Chou, Souk H. Low, and Noor Ashila Ramle. "Carbamazepine-Fumaric Acid and Carbamazepine-Succinic Acid Co-crystal Screening Using Solution Based Method." International Journal of Chemical Engineering and Applications 8, no. 2 (2017): 136–40. http://dx.doi.org/10.18178/ijcea.2017.8.2.645.

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Hábová, V., K. Melzoch, and M. Rychtera. "Modern method of lactic acid recovery from fermentation broth." Czech Journal of Food Sciences 22, No. 3 (2011): 87–94. http://dx.doi.org/10.17221/3411-cjfs.

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Electrodialysis was used for lactic acid recovery from fermentation broth. In the first step, lactate was recovered and concentrated by desalting electrodialysis, and the second step was electroconversion of lactate to lactic acid by water-splitting electrodialysis. The final lactic acid concentration of 151 g/l was obtained. Total energy required in both electrodialysis processes was about 1.5 kWh per 1 kg of lactic acid obtained. The fermentation broth had to be pretreated prior to the electrodialysis experiments. The pretreatment consisted of ultrafiltration, decolourisation, and the remova

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Popytailenko, Daryna, and Olena Shevchenko. "Improved Method for Determining Microbiological Contamination of Fatty Acid Methyl Esters and Blended Diesel Fuels." Chemistry & Chemical Technology 17, no. 1 (2023): 203–10. http://dx.doi.org/10.23939/chcht17.01.203.

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The process of degradation of biodiesel of vegetable origin (rapeseed and sunflower) under the influence of various factors is considered. Existing methods of determining microbiological contamination of substances are analyzed, their main advantages, disadvantages, and limits of use are determined. Based on the combination of existing methods, a method of qualitative and quantitative determination of the degree of microbiological (bacterial and mycological) damage to fuels has been developed. Quantitative and qualitative characteristics of microbiological damage to traditional and alternative

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S, R. SAGI, APPA RAO K, and S. PRASADA RAO M. "A Thallimetric Oxidation Method for the Estimation of Tartronic Acid." Journal of Indian Chemical Society Vol. 70, Oct 1993 (1993): 851–52. https://doi.org/10.5281/zenodo.5939708.

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Bio-inorganic Chemistry Laboratories. Andhra University, Visakhapatnam-530 003 <em>Manuscript received 3 July 1992, revised 22 January 1993, accepted 9 February 1993</em> A Thallimetric Oxidation Method for the Estimation of Tartronic Acid

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7

VIKITA, AGRAWAL, and K. GUPTA V. "A Spectrophotometric Determination of 2,4,5-Trichlorophenoxyacetic Acid." Journal of Indian Chemical Society Vol. 68, Oct 1991 (1991): 589. https://doi.org/10.5281/zenodo.6156421.

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School of Studies in Chemistry, Ravishankar University. Raipur-492 010 <em>Manuscript received 5 July 1991, revised 3 September 1991, accepted 28 October 1991</em> A Spectrophotometric Determination of 2,4,5-Trichlorophenoxyacetic Acid.

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8

L Abd El, AI. "An Innovative Method for Egyptian Monazite Mineral Digestion by Sulfuric Acid." International Journal of Science and Research (IJSR) 10, no. 3 (2021): 1194–202. https://doi.org/10.21275/sr21316221646.

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9

V., K. SEERIYAA, R. CHOUREY V., S. VARMAA R., K. SOLANKEE S., and RAA. SHAASTRY VI. "Kinetics and Mechanism of Oxidation of some Primary Alcohols by N-Bromobeozamide." Journal of Indian Chemical Society Vol. 63, Sep 1986 (1986): 847–49. https://doi.org/10.5281/zenodo.6302486.

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School of Studies in Chemistry, Vikrama University, Ujjeina- 456 010 <em>Manuscript received 24 December 1985, accepted 12 August 1986</em> Kinetics and Mechanism of Oxidation of some Primary Alcohols by <em>N</em>-Bromobeozamide    

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10

RAJANI, KUMARI, P. S. CHANDEL C., and M. GUPTA C. "Polarographic Studies of Mixed Complexes of Cadmium(II) with Amino Acids and Pyridoxine (Vitamin B6)." Journal of Indian Chemical Society Vol. 62, Oct 1985 (1985): 740–43. https://doi.org/10.5281/zenodo.6322783.

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Department of Chemistry, University of Rajasthan, Jaipur-302 004 <em>Manuscript received 6 May 1985, accepted 11 September 1985</em> Ternary complexes of cadmium(II) with amino acids (alanine, glycine, glutamic acid, serine and threonine) and pyridoxine have been studied polarographically at 30° and at a constant ionic strength <em>µ - </em>1.0 (KNO<sub>2</sub>) and pH 8-9. The reduction of the complexes in each case is reversible and diffusion-controlled Cd<em><sup>II</sup></em> forms three mixed complex species, (Cd(amino acids) (pyridoxine)], (Cd(amino acids)(pyridn

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11

Omi, Agrawal, and K. Gupta V. "A new reagent system for the determination of formic acid." Journal of Indian Chemical Society Vol. 76, Mar 1999 (1999): 168–69. https://doi.org/10.5281/zenodo.5861289.

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School of Studies in Chemistry, Pt. Ravishankar Shukla University, Raipur-492 010, India <em>Manuscript received 10 December 1997, revised 18 September 1998, accepted 6 October 1998</em> A spectrophotometric method using phloroglucinol is described for the determination of formic acid at ppm level. The method involves the reduction of formic acid by hydrochloric acid and magnesium powder. The formaldehyde so formed is treated with phloroglucinol to give an orange-red coloured dye with <sup>\(\lambda\)</sup><sub>max, </sub>at 475 am. Beer's law is obeyed in the concentration range 2-15 pg o

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12

K., N. RAMACHANDRAN, AMLATHE SULBHA, and K. GUPTA V. "Determination of Methanol using j-Acid." Journal of Indian Chemical Society Vol. 69, Jan 1992 (1992): 34–35. https://doi.org/10.5281/zenodo.5992213.

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Department of Chemistry, Ravishankar University. Raipur-492 010 <em>Manuscript received 24 April 1991, revised 5 December 1991, accepted 22 January 1992</em> A sensitive method for spectrophotometric determination of methanol in environmental samples is described. Methanol is oxidised to formaldehyde with acidic potassium permanganate and the resulting formaldehyde is reacted with J-acid to form a yellow dye with green fluorescence having \(\lambda\)<sub>max</sub> at 470 nm. The<em> </em>method has been successfully applied for the determination of methanol in effluents from distilleries and p

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Evans, RonaldM, Estelita Ong, PrudimarS Segui, CatherineC Thompson, Kazuhiko Umesono, and Vincent Giguere. "4981784 Retinoic acid receptor method." International Journal of Biochemistry 23, no. 11 (1991): iv. http://dx.doi.org/10.1016/0020-711x(91)90258-o.

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14

C., H. Raghavan Nambiar, Narayana B., V. Sreekumar N., A. Nazareth R., and Gopalakrishna Bhat N. "Spectrophotometric determination of platinum(IV) using anthranilic acid." Journal of Indian Chemical Society Vol. 79, Sep 2002 (2002): 778–79. https://doi.org/10.5281/zenodo.5844661.

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Department of Studies in Chemistry, Mangalore University, Mangalagangotri-574 199, India <em>E-mail : </em>nbadiadka@yahoo.co.uk         <em>Fax : </em>91-824-287367 <em>Manuscript received 11 July 2001, revised 22 January 2002, accepted 16 March 2002</em> A rapid and sensitive spectrophotometric method for the determination of Pt<sup>IV</sup> with anthranilic acid is described. Anthranilic acid reacts with Pt<sup>IV</sup> at pH 3.0 to give a pink coloured complex, which shows λ<sub>max</sub> at 372 nm. Sandell's sensitivity and molar absorptivity of the com

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15

Zámostná, K., J. Nevoral, T. Kott, et al. "A simple method for assessing hyaluronic acid production by cumulus-oocyte complexes." Czech Journal of Animal Science 61, No. 6 (2016): 251–61. http://dx.doi.org/10.17221/51/2015-cjas.

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16

Rikhsibayevna, Tadjibayeva Mahmuda, Ziyadullaeva Kamola Khaitboevna, Akhmedova Farzona Uktamovna, and Karimov Rikhsibai Kuchkarovich. "OPTIMISATION OF THE PROCESS OF PREPARATION OF ACETYLSALICYLIC ACID COMPLEX WITH GLYCYRRHIZIC ACID." American Journal of Engineering and Technology 6, no. 9 (2024): 111–15. http://dx.doi.org/10.37547/tajet/volume06issue09-13.

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The process of preparation of acetylsalicylic acid complex with glycyrrhizic acid has been developed. Also, the optimal parameter conditions were found by the method of mathematical planning. The results of the quantitative assessment of the contribution of each of the factors selected as one of the tasks of process optimization by the method of mathematical planning of the experiment were analyzed.

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17

Liliia, Budniak, Slobodianiuk Liudmyla, Marchyshyn Svitlana, and Demydiak Olha. "Determination of Arnica foliosa Nutt. fatty acids content by GC/MS method." ScienceRise: Pharmaceutical Science, no. 6(28) (December 30, 2020): 14–18. https://doi.org/10.15587/2519-4852.2020.216474.

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Medicinal plants have been considered as an important source for the prevention and treatment of various diseases. The genus Arnica L. is a genus of Asteraceae family, many species of which are used in traditional medicine. Arnica chamissonis Less. and Arnica foliosa Nutt., which belong to plants of the genus Arnica L., are successfully grown in the culture. There is insufficient information in the literature on the biologically active substances of Arnica foliosa Nutt. The presence of sesquiterpene lactones in the leaves and inflorescences is indicated. The flowers contain polysaccharides, mo

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18

N., Gopalakrishna Bhat, Narayana B., Aquin Nazareth Ronald, V. Sreekumar N., and H. R. Nambiar C. "Spectrophotometric determination of nickel using sulfosalicylic acid." Journal of Indian Chemical Society Vol. 80, Oct 2003 (2003): 939–40. https://doi.org/10.5281/zenodo.5839536.

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Department of Studies in Chemistry, Mangalore University, Mangalagangothri-574 199, India <em>E-mail : </em>nbadiadka@yahoo.co.uk           <em>Fax : </em>91-824-2287367 <em>Manuscript received 8 June 2001, revised 23 April 2003, accepted 6 May 2003</em> A simple and rapid spectrophotometric method for the determination of nickel has been developed using sulfosalicylic acid. The pink coloured 1 : 1 complex formed shows the absorption maximum at 510 nm. The method is free from interference from many of the associated metal ions. It obeys the Bee

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19

KISHI, Hiroko, and Kiyoko KAWANA. "Determination Method of Isocitric Acid in Food Additive Citric Acid." Journal of the Food Hygienic Society of Japan (Shokuhin Eiseigaku Zasshi) 42, no. 1 (2001): 45–47. http://dx.doi.org/10.3358/shokueishi.42.45.

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20

Toptikov, V. A. "THE INFLUENCE OF ACID PROTEIN PRECIPITANTS ON THE SPECIFICITY OF THE REACTION OF NINHYDRIN WITH AMINO ACIDS." Biotechnologia Acta 15, no. 3 (2022): 42–51. http://dx.doi.org/10.15407/biotech15.03.043.

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Aim. The purpose of the work was to determine the effect of trichloroacetic (TCA) and perchloric (HClO4) acids on the result of ninhydrin reaction with various amino acids. Methods. A standard method of amino acid detection using a ninhydrin reagent was applied. Optical spectra and density of reaction products were determined spectrophotometrically. Results and conclusions. As a result, it was found that the studied acids change the spectral characteristics of the products of the ninhydrin reaction with amino acids. TCA significantly reduced the optical density of chromophores, and HClO4 also

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21

Subinay, Datta, Sarkar Biswajit, Ghosh Srabani, et al. "Validation of Automated ESR Method by Capillary Photometry with Conventional Westergren Method." International Journal of Pharmaceutical and Clinical Research 16, no. 2 (2024): 98–103. https://doi.org/10.5281/zenodo.11061894.

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<strong>Background:</strong> Westergren method is routinely used for ESR measurement. However, it has various limiting factors. Alternative method has to be devised to overcome the limitations of the manual Westergren method. These new methods must be properly evaluated before introducing in clinical laboratories. <strong>Methods:</strong> A total of 708 randomly collected Ethylene Diamine Tetraacetic Acid (EDTA) samples from patients attending in hospital were assayed parallelly in the recently launched Hematology Analyzer Roller 20 LC and manual Westergren method. Results of t

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22

Pirguliyeva, M. S., and A. M. Guliyev. "ADDUCTS OF LEVOPIMARIC ACID WITH ACRYLIC ACID AND ETHANEDITHIOL AS ACID CORROSION INHIBITORS OF METALS." Chemical Problems 19, no. 2 (2021): 107–12. http://dx.doi.org/10.32737/2221-8688-2021-2-107-112.

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The adducts were synthesized by means of diene condensation reaction of levopimaric acid with acrylic acid, and through carrying out the free radical addition of ethandithiol to levopimaric acid. The composition and structure of these adducts were identified through data of the elemental analysis, IR and PMR spectroscopy. The efficiency of the synthesized diacids as corrosion inhibitors was determined by means of the gravimetric method (on mass losses of a sample of steel plate of mark C-3) in an acidic medium (solutions of 1H and 5H of sulfuric acid). The influence of the medium temperature a

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23

M., VENKATESWARA RAO, J. ROJIVADIYA A, H. PARSANIA P., and H. PAREKH H. "A Convenient Method for the Preparation of Bisphenols." Journal of Indian Chemical Society Vol. 64, Dec 1987 (1987): 758–59. https://doi.org/10.5281/zenodo.6239639.

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Department of Chemistry, Saurashtra University, Rajkot-360 005 <em>Manuscript received 19 May 1986, revised 16 September 1987, accepted 3 November 1987</em> Synthesis of two bispbenols having a 'cardo' group was carried out from phenol and <em>o</em>-cresol using cyclohexanone and a mixture of hydrochloric acid and acetic acid in the ratio 2. 1 (v/v) at different temperatures to optimise the condition. The products have been characterised by ir, <sup>1</sup>H nmr and <sup>12</sup>C nmr spectra.

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Sudhir, Bhatia. "LOSS OF AN ABUNDANT QUANTITY OF RIBONUCLEIC ACID DURING MINI COLUMN ISOLATION METHOD." Biotechnologia Acta 16, no. 3 (2023): 65–69. http://dx.doi.org/10.15407/biotech16.03.065.

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Aim: The Isolation of nucleic acid is an important step for conducting different molecular assays in many laboratories around the world. It is also a common practice that user is isolating the ribonucleic acid (RNA) from the samples with mini column once and throwing away the supernatant. This makes isolated RNA as limiting factor in many studies as this issue has not been addressed in literature. Therefore, we decided to conduct whether it is a loss of ribonucleic acid during the mini column isolation method. Method: In this research, the mini column isolations were done with different sample

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Milena, Jankulovska-Petkovska, S. Jankulovska Mirjana, and Dimova Vesna. "Protonation of citraconic and glutaconic acid in perchloric acid media." Technologica Acta 12, no. 1 (2019): 1–8. https://doi.org/10.5281/zenodo.3267263.

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The protonation process of citraconic and glutaconic acid in perchloric acid media was followed using the method of UV spectroscopy. The observed changes in the UV spectra of investigated acids confirmed that the protonation process in perchloric acid with concentration from 5 to 10 mol/dm<sup>3</sup> occurred. Glutaconic acid behaved as weak organic base in perchloric acid media and existed in its monoprotonated form. On the other hand, citraconic acid existed in its protonated form and as protonated anhydride at higher perchloric acid concentration. Using the absorbance data the thermodynami

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Nguyen, Du Huy, Dong Van Nguyen, Nhung Thi Hong Nguyen, Luyen Thi Thuy Nguyen, and Mai Anh Nguyen. "IMPROVEMENT OF AMINO ACID DETERMINING METHOD." Science and Technology Development Journal 14, no. 4 (2011): 27–35. http://dx.doi.org/10.32508/stdj.v14i4.2045.

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Analysis of amino acid composition is the only way to evaluate the nutritional value of food. The analytical procedure is often complicated and time-consuming. Improving the analysis is, therefore, necessary to control the use of nonprotein nitrogenous constituens in food. The main contributions of the study on the analysis of 25 protein AAs are: (i) The use of borate buffer which facilitated the dansylation of AAs; (ii) The improvement of liquid chromatographic separation using ion-paring technique in reversed-phase mode at low pH with “bidentate bonding” column. Not only the resolutions of t

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Еранская, Татьяна. "ACID TREATMENT METHOD OF BURNT KAOLIN." PNRPU Bulletin. Chemical Technology and Biotechnology, no. 4 (December 30, 2019): 119–32. http://dx.doi.org/10.15593/2224-9400/2019.4.11.

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Sidorenko, D. O., and Zh V. Surikova. "Acid tar processing by neutralization method." Environmental Protection in Oil and Gas Complex, no. 3 (2021): 45–49. http://dx.doi.org/10.33285/2411-7013-2021-3(300)-45-49.

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Xue, Mingyuan, and Tianwei Tan. "Novel synthesis method of polyaspartic acid." Journal of Bioscience and Bioengineering 108 (November 2009): S32. http://dx.doi.org/10.1016/j.jbiosc.2009.08.070.

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Mirzaqulov, X.Ch, Zikirov.X, E.D Eminov, and O. Boltaboyev. "MANUFACTURE EXTRACTION PHOSPHORIC ACID BY WET METHOD." GOLDEN BRAIN 1, no. 26 (2023): 67–70. https://doi.org/10.5281/zenodo.8379217.

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<em>Results of comparative analyses of a chemical compound and technological exponents of manufacture extraction phosphoric acid are resulted. It is shown, that optimum conditions of reception extraction phosphoric acid with the content of 21,5-23% </em><em>Р</em><em><sub>2</sub></em><em>О</em><em><sub>5</sub></em><em> are temperature 85-90</em><em><sup>о</sup></em><em>С</em><em>, ratio L:S = 2,5-3,5 and the content free S</em><em>О</em><em><sub>3</sub></em><em> 1,5-2,5%.</em>

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R., Tijar, El Merbouh B., Bourjila M., et al. "Conformational space analysis of neutral and deprotonated forms of benzoic acid, salicylic acid and phthalic acid using a genetic algorithm." Chemistry International 2, no. 4 (2016): 201–21. https://doi.org/10.5281/zenodo.1471383.

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In this paper we present a detailed conformational study of three aromatic systems constituting the basic units of humic acids namely benzoic acid, salicylic acid and phthalic acid. The genetic algorithm, based on the multi-niche crowding (MNC) method, coupled with the semi-empirical AM1 method is used to analyze the potential energy surface (PES) of these systems. This algorithm, implemented in the MOPAC program and piloted by scripts, provides better detection of global and local minima in a reasonable time. The results obtained are comparable with those of previous studies. Three factors ca

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Rao Inukollu, Srinivasa, Pradipta Sinha, Ajay Soni, Arani pal, and Nageswara Rao Gollapalli. "NOVELSYNTHETIC METHOD FOROZENOXACIN." International Journal of Advanced Research 10, no. 01 (2022): 644–49. http://dx.doi.org/10.21474/ijar01/14085.

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A newsynthetic route has been developed for the total synthesis of ozenoxacin. In this route avoided toxic heavy metals and synthesised the key intermediate_7-bromo-1-cyclopropyl-8-methyl-4-oxo-1,4-dihydroquinoline-3-carboxylic acid by simply insertion of Cyclopropyl amine into 4-oxo-4H-chromene-3-carboxylic acid intermediate, Then the key intermediate carboxylic acidundergoesSuzuki coupling with boronated ester and deacetylation to afford ozenoxacin.

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Naseri, Abdolhossein, Ebrahim Ghorbani-Kalhor, Javad Vallipour, Samira Jafari, Gholam Hossein Shahverdizadeh, and Karim Asadpour-Zeynali. "Simultaneous Spectrophotometric Determination of Benzoic Acid, Sorbic Acid, and Ascorbic Acid Using a Net Analyte Signal-Based Method." Journal of AOAC INTERNATIONAL 92, no. 6 (2009): 1807–14. http://dx.doi.org/10.1093/jaoac/92.6.1807.

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Abstract The net analyte preprocessing/classical least-squares (NAP/CLS) method is a simple chemometric method that has been used for the simultaneous spectrophotometric determination of benzoic acid, sorbic acid, and ascorbic acid. The obtained results indicated that the performances of the NAP/CLS and partial least-squares methods were almost identical. The net analyte signal (NAS) concept was also used to calculate multivariate analytical figures of merit, such as LOD, selectivity, and sensitivity. Wavelength selection was applied based on the concept of NAS regression, and improved the met

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Iman, Tagelsir Abdalla Mohamed, Khan Wasim, Chester Karishma, Hassan Mohamed Abdelwahab, Ahmad Sayeed, and Mohamed Hussien Ayoub Saad. "Simultaneous quantitative estimation of ellagic acid and gallic acid in Sudanese Solanum dubium seed by high performance thin layer chromatography (HPTLC)." GSC Biological and Pharmaceutical Sciences 13, no. 1 (2020): 054–61. https://doi.org/10.5281/zenodo.4263944.

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<strong>Background</strong>: <em>Solanum dubium</em> is a plant believed to have several therapeutic effects including anti-asthmatic properties. The objective of this study was to investigate the quantitative estimation of Gallic acid and Ellagic acid from the seed extract of Sudanese <em>Solanum dubium</em>. <strong>Methods</strong>: A simple and rapid high-performance thin-layer chromatographic method was developed and validated for quantitative estimation of Gallic acid and Ellagic acid from the seed extract of Sudanese <em>Solanum dubium</em>. <strong>Results</strong>:

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Alispahić, Amra, Adela Krivohlavek, and Nives Galić. "Novel Preservation Methods for Inorganic Arsenic Speciation in Model and Natural Water Samples by Stripping Voltammetric Method." Applied Sciences 11, no. 19 (2021): 8811. http://dx.doi.org/10.3390/app11198811.

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In this study, the preservation of As(III) in model solutions and natural groundwater samples from four locations in Croatia was conducted. Model laboratory samples were spiked with As(III) and As(V), and different complexing agents. Solutions were analysed in intervals of 24, 48 h and during ten days after preparation. Model samples containing citric acid, sodium citrate, sodium oxalate and potassium sodium tartrate in combination with acetic acid, spiked with As(III)and As(V), showed good species preservation. As(III), in model samples, was preserved for 7 days with citric acid, and citric a

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He, Wen Xuan. "Exploration of Detecting Method of Waste Oil." Applied Mechanics and Materials 644-650 (September 2014): 939–42. http://dx.doi.org/10.4028/www.scientific.net/amm.644-650.939.

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In this paper, the relative change rates of content of conjugated fatty acid glycerides, content of tans-fatty acid glycerides, unsaturation and linear long-chain fatty acid glycerides were explored after being at high temperature for several hours by using FTIR-ATR. The results hints:1.Starting from 160°C, the contents of conjugated fatty acids glycerides and trans-fatty acid glycerids in the vegetable oils increase but unsaturation and content of linear long-chain fatty acid glycerides decreases with heating temperature and heating time increasing; 2. When heating temperature reaches 200°C o

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Church, Clinton, John Spargo, and Sarah Fishel. "Strong Acid Extraction Methods for “Total Phosphorus” in Soils: EPA Method 3050B and EPA Method 3051." Agricultural & Environmental Letters 2, no. 1 (2017): 160037. http://dx.doi.org/10.2134/ael2016.09.0037.

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P., PARIMOO. "Quantitative Determination of Metronidazole in Drug Preparations by Indirect Acid-Base Titration Method." Journal of Indian Chemical Society Vol. 65, Feb 1988 (1988): 151–52. https://doi.org/10.5281/zenodo.6348703.

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Department of Pharmacy, Birla Institute of Technology  and Science, Pliant-898 031 <em>Manuscript received 1 June 1987, revised 21 December 1987,  accepted 80 December 1987</em> Quantitative Determination of Metronidazole in Drug Preparations by Indirect Acid-Base Titration Method.

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Bhabatosh, Mandai, and S. Roy U. "Extraction chromatographic method of indium(III) with n-capric acid." Journal of Indian Chemical Society Vol. 78, Apr 2001 (2001): 208–10. https://doi.org/10.5281/zenodo.5872724.

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Department of Chemistry, Visva-Bharati, Santiniketan-731 235, India <em>E-mail</em> : root@vbharat.ernet.in     <em>Fax</em> : 91-03463-52-672 <em>Manuscript received 1 December 1999, revised 6 July 2000, accepted 30 November 2000</em> A selective method has been developed for extraction chromatographic studies of ln<sup>III</sup> with <em>n</em>-capric acid (liquid cation exchanger) coated on silica gel as a stationary phase. Its quantitative extraction has been achieved from acetate buffer solution in the pH range 3.75-5.5. The effects of p<sup>ll</sup>, stripping agent, flow

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S., K. DOLUI. "Chloride Ion Determination by Mohr's Method in Dilute Acid Medium." Journal of Indian Chemical Society Vol. 73, Jun 1996 (1996): 291–93. https://doi.org/10.5281/zenodo.5897908.

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Central Building Research Institute, Roorkee-247 667 <em>Manuscript received 28 July 1993, revised 9 June 1994, accepted 19 October 1994</em> Chloride Ion Determination by Mohr's Method in Dilute Acid Medium.

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Ashutosh, Agarwal, Naik Zeal, Sharma Ragini, Patel Nikita, and Prajapati Parixit. "Analytical Method Development and Validation of RP-HPLC Method for the Simultaneous Estimation of Mefenamic acid and Tizanidine HCl." Journal of Advances in Pharmaceutical Sciences 1, no. 1 (2023): 1–11. https://doi.org/10.5281/zenodo.7524683.

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<em>High performance liquid chromatography (HPLC) method has been developed and validated for the estimation of Mefenamic acid and Tizanidine tablets. A simple, rapid, accurate and precise HPLC method was developed for quantification of Mefenamic acid and Tizanidine HCl. The developed method used the mixture of Acetonitrile and Water (90:10, v/v) as mobile phase at a flow rate of 1.0 mL/min, Detection was carried out at 250 nm. The linearity for Mefenamic acid of the proposed method was found in the concentration range of 125-625 ppm with regression coefficient (R<sup>2</sup>) of 0.998 and the

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S., K. BRAHMA, and K. CHAKRABURTTY A. "Studies on Complexes of Rare Earths with Malonohydroxamic Acid." Journal of Indian Chemical Society Vol. 64, Jan 1987 (1987): 58–59. https://doi.org/10.5281/zenodo.6198433.

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Inorganic Chemistry Section, Jadavpur University, Calcutta-700 032 Manuscript received 10 July 1980, revised 7 October 1986, accepted 26 November 1986 Studies on Complexes of Rare Earths with Malonohydroxamic Acid

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Tumini, M., O. G. Nagel, M. P. Molina, and R. L. Althaus. "Microbiological method using Bacillus megaterium with fusidic acid for detection of macrolides in milk." Czech Journal of Food Sciences 34, No. 1 (2016): 9–15. http://dx.doi.org/10.17221/307/2015-cjfs.

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Tumini, Melisa, Orlando G. Nagel, Maria Pilar Molina, and Rafael L. Althaus. "Microbiological method using Bacillus megaterium with fusidic acid for detection of macrolides in milk." Czech Journal of Food Sciences 34, no. 1 (2016): 9–15. http://dx.doi.org/10.17221/8734-cjfs.

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Alves, Sérgio P. C., Carlos Baleizão, and José Paulo S. Farinha. "A new optical boron detection method." Anal. Methods 6, no. 15 (2014): 5450–53. http://dx.doi.org/10.1039/c4ay00236a.

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Raiymbekov, Y. B., U. Besterekov, P. A. Abdurazova, U. B. Nazarbek, and I. A. Pochitalkina. "Recovery of used acetic acid via sulfuric acid." Bulletin of the Karaganda University. "Chemistry" series 104, no. 4 (2021): 149–62. http://dx.doi.org/10.31489/2021ch4/149-162.

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Kazakhstan has a huge phosphate raw material base, where the basis is made up of micro-grained phosphate ores of the Karatau basin. The depletion of reserves of high-quality commercial ores leads to the search for new methods of using the enrichment and sorting of low-grade technogenic ores, one of which is phosphate-siliceous slates. The presented study was carried out in two stages: at the first stage, phosphate-siliceous shales were enriched by the acetic acid method, regime technological parameters, kinetic and thermodynamic regularities of the process were determined. At the second stage

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Meng, Xinle, Bohan Li, Hudong Tian, Ruilong Li, and Jiahui Zhao. "Comprehensive Resource Treatment of Titanium White Waste Acid by Chlorination Method Based on Mechanical Separation Method." Academic Journal of Science and Technology 9, no. 1 (2024): 7–12. http://dx.doi.org/10.54097/jqy9z082.

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Using the chlorination method to produce titanium dioxide, approximately 6~8t of waste acid with a mass fraction of about 20% is generated per 1t of titanium dioxide produced.In order to address the issue of acid waste pollution and resource recycling, domestic and international scientists and researchers have developed and studied various governance processes and methods, such as rare metal extraction, concentration neutralization, membrane separation technology, and so on.This article analyzes the advantages and disadvantages of various processes and proposes the mechanical separation method

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Larisa, Alagić-Džambić, Dacić Minela, Bašić Kenan, et al. "Spectrophotometric Determination of Sulpiride in Pharmaceutical Products." Pharmaceutical and Chemical Journal 7, no. 4 (2020): 75–79. https://doi.org/10.5281/zenodo.13955707.

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A simple spectrophotometric method was developed and validated for determination of Sulpiride in pharmaceutical products. The method was based using two different solvent: 0.1 mol/L sodium hydroxide and 0.1 mol/L hydrochloric acid. The absorbance maximum was at 291 nm. The correlation coefficient were r=0.9994 (in 0.1 mol/L sodium hydroxide as solvent) and r=1.0000 (in 0.1 mol/L hydrochloric acid as solvent). The method was validated and results obtained for the assay of three different brands of Sulpiride capsules, hard. The proposed method was successfully applied to the spectrophotometric d

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D., P. S. RATBORE, and K. TARAFDBR P. "A Rapid Spectrophotometric Method for the Determination of Nitrite in Water." Journal of Indian Chemical Society Vol. 66, Mar 1989 (1989): 185–87. https://doi.org/10.5281/zenodo.5948660.

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Chemical Laboratory, Regional Centre for Exploration and Research, At,mio Minerals Division, Department of Atomic Energy, Shillong-793 012 <em>Manuscript received 10 June 1988, accepted 14 December 1988</em> A new colour reaction for the determination or nitrite in water is reported. Nitrite reacts with <em>p</em>-aminophenylmercaptoacetic acid in hydrochloric acid medium to form a diazonium cation, which is subsequently coupled with 8-hydroxyquinollne in alkaline medium to produce a reddish orange azo dye. The reactions are very fast and require no control of temperat

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Sumaiyah, Selvia Wiliantari, and Karsono. "Preparation and Characterization of Dextrin in Xanthosoma sagittifolium (L.) Schott Starch with Acid Catalyst and Enzymatic Methods." Indonesian Journal of Pharmaceutical and Clinical Research 1, no. 2 (2018): 48–54. http://dx.doi.org/10.32734/idjpcr.v1i2.346.

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Abstract. Taro produces carbohydrate. It has the potential as a substitute material for wheat and rice or as diversification into food and raw materials for pharmaceutical industrial. The aim of this study is to prepare and characterize dextrin in Xanthosoma sagittifolium starch with acid catalyst and enzymatic methods. Xanthosoma sagittifolium was mashed and decanted with distilled water. Dextrin was made by acid catalyst method using HCl 1 N and enzymatic method using α-amylase enzyme. Dextrin was characterized and tested according to the Indonesian National Standard (SNI) 01-2593-1992. The

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