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Artículos de revistas sobre el tema "DITHIZONE"

Autor: Grafiati

Publicado: 4 de junio de 2021

Última modificación: 26 de julio de 2025

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1

Sulistyarti, Hermin, Mega Madha Wijaya, Dewi Setyowati, Sutrisno Sutrisno, and Erwin Sulistyo. "Simple and Rapid Device for Mercury Detection Based on The Formation of Mercury(II)-Dithizonate on Polytetrafluoroethylene (PTFE) Membrane." Journal of Pure and Applied Chemistry Research 8, no. 2 (2019): 185–96. http://dx.doi.org/10.21776/ub.jpacr.2019.008.02.473.

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A new analytical device for mercury detection has been developed by doping dithizone on to hydrophobic PTFE (polytetrafluoroethylene) membrane to form a blue dithizone membrane which instantaneously changed to orange color of mercury(II)-dithizonate complex, when this dithizone membrane was contacted to mercury(II) solution. The higher concentration of mercury showed the greater intensity of the orange colour mercury(II)-dithizonate complex. The design and chemicals were optimized to obtain the best performance for mercury measurement. This method is prospective as mercury test kit for simple,

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2

Sueishi, Yoshimi, and Yoko Takashima. "Kinetic and Mechanistic Studies of the Thermal Isomerization of Bismuth Dithizonate." Journal of Chemical Research 2000, no. 4 (2000): 193–95. http://dx.doi.org/10.3184/030823400103166922.

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The isomerization rates of bismuth dithizonate (Bi(HD Z)3) having three dithizone ligands have been measured in various kinds of solvents and at high pressures, and the reaction mechanisms in aprotic and protic solvents are discussed.

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3

Dang, Tai Kim. "DETERMING LEAD IN SOIL BY EXTRACTION-PHOTOMETRIC IN CAO LANH CITY, DONG THAP PROVINCE." Scientific Journal of Tra Vinh University 1, no. 25 (2019): 56–59. http://dx.doi.org/10.35382/18594816.1.25.2017.121.

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This paper is to identify lead content in soil by extraction-photometric method and using non-polar solvents (CHCl3) to extract complex of lead (II) -dithizone. The optimal conditions of extraction process of lead(II) dithizonate have been identified: pH is from 8.5 to 10,0; the maximum wavelength of lead(II) dithizonate compound is 520nm (λmax = 520 nm); absorbance of the solution in compliance with the Bougher-Lambert-Beer law is in wide range from 0.02 to 0.1 mg/l.

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4

Svoboda, Ladislav, and Stanislav Jech. "Sorption of Cadmium and Lead by Chelating Ion Exchangers Ostsorb DITHIZON and Ostsorb SALICYL." Collection of Czechoslovak Chemical Communications 59, no. 6 (1994): 1319–25. http://dx.doi.org/10.1135/cccc19941319.

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The pH and I (ionic strength) dependences of exchange capacity of chelating ion exchangers Ostsorb based on spherical cellulose modified with functional groups of dithizone and salicylic acid have been studied in the sorption of Pb(II) and Cd(II) ions. The cellulosic selective sorbents Ostsorb DITHIZON and Ostsorb SALICYL can be used for sorption of Pb(II) and Cd(II) ions from aqueous solutions of I = 0 - 1 mol l-1 (Pb) and I = 0 - 5 mol l-1 (Cd); the dithizone ion exchanger retains both metals most effectively at pH 7 - 8, the salicyl ion exchanger at pH 5.5 - 6.5 (Pb) or pH 4 - 9 (Cd). Becau

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5

Richveisová, Barbora Micháleková, Zuzana Dürešová, Miroslav Horník, Jozef Augustín, and Martin Pipíška. "Distribution of Zinc and Cadmium in Tissues of Giant Reed (Arundo Donax L.): Sequential Extraction - Radiometric Study." Nova Biotechnologica et Chimica 13, no. 1 (2014): 38–47. http://dx.doi.org/10.2478/nbec-2014-0005.

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Abstract Heavy metals are taken up by the vascular plant root system from water solutions in cationic forms. Subsequently, during both short and long distance transport to other plant tissues, cation forms are incorporated to many bioorganic compounds differing in stability, ionic character and physico-chemical properties such as solubility in lipid structures and mobility across cell membrane systems. Many sequential and single step extraction methods have been elaborated for characterization of the role of individual components of plant cells components in transport and detoxication of heavy

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6

Fadela, Dian Mira, Mudasir Mudasir, and Adhitasari Suratman. "Adsorption of Cu²⁺ Metal Ions on Dithizone-Immobilized Natural Bentonite." Key Engineering Materials 840 (April 2020): 64–70. http://dx.doi.org/10.4028/www.scientific.net/kem.840.64.

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The research of adsorption of Cu2+ metal ion on dithizone-immobilized natural bentonite (DNB) had been carried out. The experiment was begun by the activation of natural bentonite with HCl 4 M and dithizone-immobilized on activated bentonite surface. This study included synthesis and characterization of dithizone-immobilized bentonite and its application in adsorption of Cu2+ metal ions. The type of interaction occurred in the adsorption was tested by sequential desorption. The result showed that dithizone successfully immobilized on activated natural bentonite (ANB). The optimum conditions fo

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7

Sidarta, Yuan, Didik Krisdiyanto, and Khamidinal Khamidinal. "Adsorption and Desorption Metal Cu (II) using Zeolite Synthetic by Bottom Ash Coal Modified Dithizone." Kaunia: Integration and Interconnection Islam and Science Journal 18, no. 2 (2022): 41–51. http://dx.doi.org/10.14421/kaunia.3706.

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Zeolite synthetic and zeolite modified dithizone has been succesfully created by hydrotermal method. The aim of this research is to know the characteristics of zeolite synthetic and zeolite modified dithizone and to know capacity of adsorption and desorption. The effect of various variables, such as pH, concentration of Cu (II), contact time and temperature was investigated using batch process, characterization zeolite modified dithizone and zeolite synthetic using XRD, XRF, FTIR and GSA. The result of characterization bottom ash coal by hydrotermal reaction using XRF, be discovered compositio

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8

Mudasir, Mudasir, Febbi Rahmayuni, and Sri Sudiono. "Removal of Pb(II) Ion from Aqueous Solution Using Dithizone-Immobilized Natural Bentonite." Key Engineering Materials 884 (May 2021): 10–16. http://dx.doi.org/10.4028/www.scientific.net/kem.884.10.

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Removal of Pb(II) ion using activated and dithizone-immobilized natural bentonites has been carried out. Natural bentonite was activated by immersing and stirring the bentonite in 6M HCl solution. The dithizone-immobilized natural bentonite was prepared by mixing the bentonite and dithizone in toluene at 50 °C for 6 h and the immobilized adsorbents was characterized by FTIR and XRD. The dithizone immobilization is aimed to increase the capacity and selectivity of the adsorbent towards Pb(II) ions. Characterization results suggest that dithizone has been successfully immobilized on the surface

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9

Rabaeh, Khalid, and Ahmed Basfar. "Optical evaluation of dithizone solution as a new radiochromic dosimeter." Pigment & Resin Technology 49, no. 4 (2020): 249–53. http://dx.doi.org/10.1108/prt-10-2019-0091.

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Purpose The purpose of this paper is to propose a new dithizone solution dosimeter for high radiation applications such as polymers applications and food irradiation. Design/methodology/approach Gamma-rays cell of Co-60 source with 8.4 kGy/h dose rate was used to irradiate the dithizone solutions at different irradiation temperatures. The optical measurements of unirradiated and irradiated dithizone dye solution dosimeters were performed using a UV/VIS spectrophotometer at absorption peaks of 421 and 515 nm. Findings The new dosimeter improved significantly with the increase of dithizone dye c

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10

(Miss), B. SARANGI, K. MISRA B., and B. BEHERA G. "Kinetic Studies of the Formation of Dithizone. Part-I. Alkali assisted Conversion of Phenylhydrazinium Phenylhydrazine Dithiocarbamate and Diphenylthiocarbazide." Journal of Indian Chemical Society Vol. 62, Dec 1985 (1985): 979–82. https://doi.org/10.5281/zenodo.6325060.

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Department of Chemistry, Sambalpur University, Burla-768 019 The kinetics of formation of dithizone (3) from phenylhydrazinium phenylhydrazine dithiocarbamate (1) and from phenylthiocarbazide (2) has been studied. The synthetic aspect of the formation of dithizone from phenylhydrazine and carbon disulphide has also been worked out. A mechanism for the formation of dithizone from 1 and 2 has been proposed.

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11

Setyorini, Agnidian, Suhartana Suhartana, and Pardoyo Pardoyo. "Natural Zeolite Modification using Dithizone and Its Application as Adsorbent of Cu(II)." Jurnal Kimia Sains dan Aplikasi 21, no. 2 (2018): 98–101. http://dx.doi.org/10.14710/jksa.21.2.98-101.

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Activation of zeolites with dithizone by reflux method was carried out at 50°C for 6 hours and the results were analyzed using FTIR and GSA. Furthermore, the modified zeolite dithizone was used to adsorb Cu2+ metal ions on variations of adsorption time of 5, 10, 15, 30 and 60 min, variation of adsorption pH 2, 3, 4, 5 and 6 as well as variations in concentrations of 250, 500, 1000, 1500 and 2000 ppm. The results showed that there was a vibrational shift and a new peak emerged on the FTIR zeolite activation spectrum and modified zeolite indicating that the dithizone was present in the zeolite.

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12

Acila, Meryem, Hakim Bensabra, and Monica Santamaria. "Study of the influence of dithizone as an eco-friendly corrosion inhibitor on the corrosion behaviour of AA7075 aluminium alloy in neutral chloride solution." Metallurgical Research & Technology 118, no. 2 (2021): 203. http://dx.doi.org/10.1051/metal/2021002.

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The effect of 1,5-diphenylthiocarbazone (dithizone) as an eco-friendly corrosion inhibitor for protection of AA7075 aluminium alloy in chloride containing aggressive environment was studied by means of weight-loss, electrochemical measurements and Raman spectroscopy. The results indicate that the addition of dithizone decreases significantly the corrosion rate of AA7075 alloy, with efficiency proportional to the inhibitor concentration. The polarization curves show that dithizone works as mixed-type inhibitor to slow down the anodic and cathodic reaction kinetic. The morphology revealed by sca

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13

Putra, Riandy, Khamidinal Khamidinal, Didik Krisdiyanto, and Irwan Nugraha. "ADSORPSI ION MN(II) PADA ZEOLIT DARI ABU DASAR BATUBARA TERMODIFIKASI DITIZON." Jurnal Kimia Terapan Indonesia 17, no. 2 (2015): 87–99. http://dx.doi.org/10.14203/jkti.v17i2.25.

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Adsorption characteristic of Mn(II) on zeolite synthesized from bottom ash with alkaline hydrothermal conditions loaded with dithizone have been examined. The parameters studied includes effect of pH, contact time, initial concentrations and temperature of Mn(II) by batch experiments. The raw and modified samples were characterized by XRF, XRD, FT-IR and SAA. The results of XRD and FTIR showed that hydrothermal product consists of a mixture of zeolite (zeolite Y, zeolite Na-P and zeolite X) and sodalite crystals. Hydrothermal product showed specific IR absorption zeolite at wavenumber 300-1250

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14

Zhang, Dong. "Adsorption and Preconcentration Capabilities of Nano-Barium-Strontium Titanate Powder Coated by Dithizone for Trace Bismuth." Applied Mechanics and Materials 71-78 (July 2011): 3504–7. http://dx.doi.org/10.4028/www.scientific.net/amm.71-78.3504.

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A new method for the adsorption and preconcentration of bismuth in urine was described. The methodology combines determined using a hydride generation-atomic absorption spectrometry (HG-AAS) with pre-concentration and separation of the bismuth on the nano-barium-strontium titanate powder coated by dithizone (BST-dithizone). The experimental conditions for the pre-concentration and separation of the bismuth, including pH value of the medium, shaking time, eluent condition and co-existing ions have been investigated. The result showed that the bismuth in urine could be adsorbed on the BST-dithiz

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15

Yeschenko, Yu V., V. V. Novitsky, V. D. Bovt, V. A. Yeschenko, O. I. Urazova, and N. V. Grigorova. "Dithizone injuring action to blood granulocytes and basal parts of intestine crypts." Bulletin of Siberian Medicine 9, no. 5 (2010): 24–27. http://dx.doi.org/10.20538/1682-0363-2010-5-24-27.

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It was shown, that dithizone injection to rats induced zinc deficiency in blood granulocytes and Paneth cells. Phase changes of zinc content were observed in the cells. First phase (primary decrease of cytochemically detected zinc content in the cells) was a result of intravital binding of this metal to dithizone. Second one (permanent partial increase of cell zinc content) was a result of decomposition of the product of intravital reaction. Third phase (secondary decrease of cell zinc concentration) was connected with cell necrosis. Dithizone injection to animals also induced cell secretory m

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16

Palupi, Endah Sekar, Hermin Sulistyarti, Muhammad Ikhlas Abdjan, and Chairil Anjasmara Robo Putra. "STUDI AKTIVITAS DITIZON SEBAGAI PENGOMPLEKS ION Pb2+ MENGGUNAKAN METODE SPEKTROFOTOMETRI UV-Vis DAN SEMI EMPIRIS AM1." Jurnal Muara Sains, Teknologi, Kedokteran dan Ilmu Kesehatan 4, no. 2 (2020): 423. http://dx.doi.org/10.24912/jmstkik.v4i2.8647.

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Environmental pollution is an influx of energy substances, living creatures, or other components into the environment so that the quality of the One type of pollutant is heavy metals lead (Pb). Pb of metal in irrigation found in the form of PbOH+, Pb2+, PBSO4, PbCO+, and PbHCO3. Lead can be analyzed using a UV-Vis spectrophotometer and test kit (colorimetry). The Test kit is created by adding a reagent to the sample so that there is a complex bond that occurs between the reagent and lead. The reagent often used in determining lead analysis is dithizone. Has been conducted to determine the acti

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17

Yuldashova, S.G, Z.E Jumayeva, and N.Sh Muzaffarova. "QUANTUM CHEMICAL ANALYSIS OF REACTIVITY OF DITHIZONE (DIPHENYLTHIOCARBAZONE) REAGENT." Journal of Universal Science Research 2, no. 5 (2024): 765–74. https://doi.org/10.5281/zenodo.11376984.

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This paper studies methods of lead and zinc metal ions extraction by dithizone from Khondzha wastewater samples. Inorganic metals or ions can act back with dithizone to produce colourful coordination. The dithizone reagent is highly sensitive to the presence of heavy metals such as lead (Pb) and zinc (Zn) as designated in this study. Inorganic metals or ionic can react with dithizone to produce coloured coordination compounds. As a result of studying the "composition-structure-property" system in chemical compounds, it is possible to theoretically predict the properties, composition and molecu

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18

Irving, H. M. N. H., A. H. Nabilsi, A. Mawley, D. C. Rupainwar, and Cheryl Sacht. "Studies with dithizone." Analytica Chimica Acta 181 (1986): 125–37. http://dx.doi.org/10.1016/s0003-2670(00)85227-7.

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19

Wang, Shoujuan, Zhen Xu, Yongyi Fang, et al. "Development of Cellulosic Paper-Based Test Strips for Mercury(II) Determination in Aqueous Solution." Journal of Analytical Methods in Chemistry 2018 (November 1, 2018): 1–7. http://dx.doi.org/10.1155/2018/3594020.

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Titration method (dropping-on method) was introduced as an efficient approach for determining the mercury ion (Hg2+) concentration in aqueous solution by using fabricated cellulosic paper-based test strips. In this study, dithizone used as a recognition reagent was physically loaded on cellulosic paper-based test strips for Hg2+ selective recognition. The sensing mechanism was established on the spectral absorption rate of the coordination compound that was formed by dithizone and Hg2+ under strong acidic conditions. The calibration curve was obtained by the absorbency of Hg2+-dithizone comple

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20

Zhang, Dong. "Preconcentration and Separation Capabilities of Nano-Barium-Strontium Titanate Powder Coated by Dithizone for Trace Cobalt in Water." Advanced Materials Research 279 (July 2011): 166–69. http://dx.doi.org/10.4028/www.scientific.net/amr.279.166.

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A new method for the preconcentration and separation of cobalt ion in water was described. The methodology combines determination using a flame atomic absorption spectrometry (FAAS) with adsorption and desorption of cobalt on the nano-barium-strontium titanate powder coated by dithizone (BST-dithizone). The operation conditions for the pre-concentration and separation of the cobalt, including pH, contact time, eluent condition and co-existing ions have been investigated. The result showed that the cobalt ion could be adsorbed by BST-dithizone. The adsorption quantity was affected by the pH val

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21

Song, En Jun. "Preconcentration and Separation Capabilities of the Modified Bentonite Using Dithizone for Trace Cobalt in Water." Advanced Materials Research 826 (November 2013): 203–6. http://dx.doi.org/10.4028/www.scientific.net/amr.826.203.

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In this paper, a new method for the preconcentration and separation of cobalt was described. The methodology combines determined using an atomic absorption spectrometry (FAAS) with adsorption and desorption of cobalt on the modified bentonite using dithizone (Bent-dithizone). The operation conditions for the pre-concentration and separation of the cobalt, including pH, contact time, eluent condition and co-existing ions have been investigated. The result showed that the cobalt ion could be adsorbed by Bent-dithizone. The adsorption quantity was affected by the pH value of medium and shaking ti

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Aminy, Dini Elsi, Mudasir Mudasir, and Bambang Rusdiarso. "Immobilization of Dithizone on Natural Bentonite as Adsorbent of Cd(II) Ion." Key Engineering Materials 840 (April 2020): 22–28. http://dx.doi.org/10.4028/www.scientific.net/kem.840.22.

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Research on the adsorption of Cd (II) ion in dithizone-immobilized natural bentonite has been carried out. The aims of this research were focused on the preparation of dithizone-immobilized natural bentonite (BA-D) as adsorbent and desorption experiment of Cd(II) ion. The BA-D was prepared by adding dithizone (dissolved in toluene) into the activated natural bentonite. The adsorbents were characterized by FTIR and X-Ray Diffraction (XRD). This research showed that adsorption capacities of BA-A and BA-D were 1.70×10‒5 and 2.77×10‒5 mol g‒1 (46% of increasing). According to desorption experiment

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23

Yeschenko, Yu V., V. V. Novitsky, V. D. Bovt, V. A. Yeschenko, and O. I. Urazova. "Chelating agents action on rat prostate." Bulletin of Siberian Medicine 9, no. 3 (2010): 65–67. http://dx.doi.org/10.20538/1682-0363-2010-3-65-67.

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It was shown in experiments on rats, that dithizone induced zinc deficiency in prostate cells. Three phase type of fluctuations of cytochemically detected zinc concentration was observed in the cells: phase of primary decrease, phase of temporary partial restoration and the phase of secondary decrease. Sodium diethyldithiocarbamate unlike to dithizone didn’t induce damage of cells and secondary decrease zinc content in its.

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Tetra, Olly Norita, Zaharasmi K, Zaharasmi K, et al. "OPTIMALISASI TRANSPOR Zn(II) DENGAN ZAT PEMBAWA DITIZON MELALUI TEKNIK MEMBRAN CAIR FASA RUAH." Jurnal Riset Kimia 3, no. 2 (2015): 151. http://dx.doi.org/10.25077/jrk.v3i2.68.

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ABSTRACT Zn(II) transport from the source phase into the source phase had been researched by using dithizone as carrier through bulk liquid membrane. Ion transport are started by adding 6 mL source phase that consist of Zn(II), 12 mL receiver phase that consist of Na2EDTA and 20 mL membrane phase that consist of dithizone as carrier. The experiment operation technique was assisted by magnetic stirrer mixing at 340 rpm speed within 15 minutes equilibrium time. The measurement was done to both of source phase and receiver phase by using Atomic Absorption Spectrophotometer (213.9 nm) until Zn(II)

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Ma, Hoa Thai, Van Thi Thanh Ho, Nguyen Bao Pham, Long Giang Bach, and Tuan Dinh Phan. "The Comparison of Surface Modification Methods of the Heavy Metals Adsorption of Activated Carbon from Rice Husk." Applied Mechanics and Materials 876 (February 2018): 91–96. http://dx.doi.org/10.4028/www.scientific.net/amm.876.91.

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Surface modification of activated carbon (AC) could be done through different methods in order to modify their specific physical and chemical properties to facilitate metals removal from wastewater. Three methods were used to modify the rice husk AC (RHAC) including the use of (1) HNO3, (2) dithizone and (3) the combination of HNO3 with dithizone. These modification agents were increased its affinity towards the desired pollutant. The modification methods demonstrated the effective process for the metal ions adsorption capability and the removal of them from water. For Ni2+ and Cd2+ adsorption

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Soruraddin, Mohammad Hosein, Rouhollah Heydari, Morteza Puladvand, and Mir Mehdi Zahedi. "A New Spectrophotometric Method for Determination of Selenium in Cosmetic and Pharmaceutical Preparations after Preconcentration with Cloud Point Extraction." International Journal of Analytical Chemistry 2011 (2011): 1–8. http://dx.doi.org/10.1155/2011/729651.

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A simple, rapid, and sensitive spectrophotometric method for the determination of trace amounts of selenium (IV) was described. In this method, all selenium spices reduced to selenium (IV) using 6 M HCl. Cloud point extraction was applied as a preconcentration method for spectrophotometric determination of selenium (IV) in aqueous solution. The proposed method is based on the complexation of Selenium (IV) with dithizone at pH < 1 in micellar medium (Triton X-100). After complexation with dithizone, the analyte was quantitatively extracted to the surfactant-rich phase by centrifugation and d

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Susiana, Carissa Ayu, Bambang Rusdiarso, and Mudasir Mudasir. "Enhanced Capacity and Easily Separable Adsorbent of Dithizone-immobilized Magnetite Zeolite for Pb(II) Adsorption." Indonesian Journal of Chemistry 24, no. 4 (2024): 1058. http://dx.doi.org/10.22146/ijc.90914.

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In this study, magnetic natural zeolite (ZTM) was prepared using the coprecipitation method and dithizone was then immobilized on its surface in less toxic medium of alkaline to yield dithizone-immobilized magnetic zeolite (ZTM-Dtz). The synthesized ZTM-Dtz was characterized by FTIR and XRD, indicating that dithizone was successfully immobilized on the surface of ZTM. Vibrating sample magnetometer measurements showed superparamagnetic properties of either ZTM or ZTM-Dtz with magnetization values of 7.35 and 11.49 emu g−1, respectively. The adsorption kinetics of Pb(II) on both adsorbents follo

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Huda, Bonusa Nabila, Endang Tri Wahyuni, and Mudasir Mudasir. "Greener Procedure of Dithizone Immobilization on Coal Bottom Ash for Heavy Metal Adsorbent: Synthesis Optimization and Characterization." Key Engineering Materials 927 (July 29, 2022): 3–10. http://dx.doi.org/10.4028/p-u9z574.

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In the present study, new greener approach of dithizone immobilization on coal bottom ash as a source of silica-alumina materials in alkaline (NaOH) solution has been developed to replace previously used method utilizing more toxic solvents such as toluene, carbon tetrachloride or chloroform. Some parameters influencing the effectiveness of dithizone immobilization including reaction time, concentration of NaOH solution as well as washing procedures were optimized. FTIR (Fourier Transform Infra-Red), XRD (X-Ray Diffraction) and DSC/TGA (Differential Scanning Calorimetry/Thermogravimetric Analy

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Zhang, Dong, and Yan Li Zhang. "Removal of Hg (II) from Waste Water Using Nano-Barium-Strontium Titanate Coated by Dithizone." Applied Mechanics and Materials 71-78 (July 2011): 3512–15. http://dx.doi.org/10.4028/www.scientific.net/amm.71-78.3512.

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The adsorption capability of nano-barium-strontium titanate coated by dithizone(BST- dithizone) for mercury in environmental water samples was studied. The optimum experimental parameters for the adsorption and desorption of the mercury, such as pH values, contact time and eluent, have been investigated. The results showed that the mercury ion in water could be adsorbed on the BST- dithizone. The adsorption capability was affected by the pH value of medium and contact time. In the medium of pH 3-8, the adsorption time was more than 15 min, and capacity of adsorption was 15.3 mg·g-1. The used a

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Ramos, G. Ramis, M. C. Garcia Alvarez-Coque, B. W. Smith, N. Omenetto, and J. D. Winefordner. "Ultratrace Determination of Metals with Dithizone by Thermal Lens Spectrophotometry." Applied Spectroscopy 42, no. 2 (1988): 341–46. http://dx.doi.org/10.1366/0003702884428167.

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A pump-probe thermal lens instrument was constructed, evaluated, and applied to the determination of metals after extraction with dithizone in carbon tetrachloride. An argon-ion laser operated at 514.5 nm, with a power of just 22 mW at the cuvette position and chopped at 2 Hz, and a He-Ne laser were used as a pump and probe, respectively. The thermal lens effect was measured by a pinhole-photodiode and a lock-in amplifier. Evaluation of the setup with an iodine solution in carbon tetrachloride gave a minimum detectable absorbance of 5 × 10−6 (S/N = 3), the upper limit of the dynamic range bein

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M, A. AI QURASHI, та A. M. ALY A. "Complexes of α-Nitroso-β-naphthol and Properties of their Charge Transfer Bands". Journal of Indian Chemical Society Vol. 72, Jul 1995 (1995): 431–34. https://doi.org/10.5281/zenodo.5905046.

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Camistry department actually applied science umm Al Qura Univarsity of Makka Almukariamuh Kingdom of Soudi Aribia <em>Manuscript received 3rd May 1993, revised 2 nd November 1993 accepted 12 January 1994</em> Four complexes of Fe<sup>III</sup>, Ni<sup>II</sup> and Cu<sup>II</sup> comprising the ligands α-nitroso-β-naphthol, dithizone or 8- hydroxyquinoline have been prepared. The interaction of tris(naphthoquinoneoximato)iron(III), Fe(nqo)<sub>3</sub>, with dithizone produces a dark green compound, which shows a new hand around 700 nm, assignable to a charge tran

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Sherman, Michael P., Stephen H. Bennett, Freda F. Y. Hwang, Jan Sherman, and Charles L. Bevins. "Paneth Cells and Antibacterial Host Defense in Neonatal Small Intestine." Infection and Immunity 73, no. 9 (2005): 6143–46. http://dx.doi.org/10.1128/iai.73.9.6143-6146.2005.

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ABSTRACT Paneth cells are specialized epithelia in the small bowel that secrete antimicrobial proteins. Paneth cells are vital to the innate immunity of the small bowel in adult mammals, but their role during neonatal infection of the small bowel is not well established. Dithizone selectively damages Paneth cells, and when dithizone-treated newborn rats are infected enterally with Escherichia coli, the numbers of E. coli cells in their jejunal and ileal lavage fluid are significantly increased compared to controls. The data support that Paneth cells are necessary for neonatal antibacterial def

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33

Sheng, Zhen, Jianfeng Zhang, Chenyu Li, and Ligang Chen. "Fluorescent switching technology based on fluorescence resonance energy transfer for detecting dimethoate pesticides in environmental water." Analytical Methods 8, no. 48 (2016): 8506–13. http://dx.doi.org/10.1039/c6ay02803a.

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34

Shofwunnada, Shofwunnada, Nurul Hidayat Aprilita, and Mudasir Mudasir. "Adsorption of Silver(I) on Dithizone-Immobilized Coal Fly Ash." Key Engineering Materials 884 (May 2021): 17–24. http://dx.doi.org/10.4028/www.scientific.net/kem.884.17.

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Adsorption of Ag(I) on dithizone-immobilized coal fly ash (Dtz-CFA) from PT Madukismo Factory, Yogyakarta, Indonesia has been investigated. Immobilization of dithizone on activated coal fly ash (Act-CFA) was done by stirring the mixture of two precursors in toluene medium at 50 °C for 16 h. Parameters influencing adsorption of Ag(I) such as pH of solution, contact time and initial concentration of Ag(I) ions were optimized. FT-IR and XRD characteriztions show that the surface of fly ash has successfully immobilized by dithizone. The optimum conditions for Ag(I) adsorption are reached at pH 6,

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35

Miranda, Gina, Endang Tri Wahyuni, and Mudasir Mudasir. "Immobilization of Dithizone on Coal Fly Ash in Alkaline Medium as Adsorbent of Cd(II) Ion." Key Engineering Materials 927 (July 29, 2022): 11–19. http://dx.doi.org/10.4028/p-a1k0c7.

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Immobilization of dithizone on activated fly ash (AFA) has been carried out in water medium and used as adsorbent for Cd (II) metal. Some parameters that influences the efficiency of Cd (II) adsorption such as solution pH, adsorbent mass, contact time and initial adsorbate concentration were optimized. The concentration of Cd (II) ion before and after adsorption or desorptiom were determined by AAS. Results of the study suggest that immobilization of dithizone on AFA has successfully accomplished in water/base medium. Adsorption of Cd (II) on AFA and dithizone-immobilized fly ash (DIFA) reache

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36

Divya Yada, Sivakkumar T, and Sudhakar M. "Evaluation of anti-diabetic activity of Trianthema portulacastrum Linn in Dithizone induced diabetes in Wistar rats." International Journal of Research in Pharmaceutical Sciences 11, SPL4 (2020): 2591–97. http://dx.doi.org/10.26452/ijrps.v11ispl4.4518.

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Trianthema portulacastrum Linn. Whole plant is an extensively used plant for medication in India for the treatment of various health issues. This study was focused to prefigure the antidiabetic potency of Chloroform extract of the Trianthema portulacastrum (CETP) whole plant administered at two doses (100mg/kg and 200 mg/kg) for the duration of 21days in Dithizone - induced diabetic rats. The rats were separated into five groups, each group containing six animals. All Groups except Group I were made diabetic by intraperitonial administration of Dithizone(50mg/kg). Group I served as control gro

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37

Fitriana, Dina, Mudasir Mudasir, and Dwi Siswanta. "The Modification of Coal Fly Ash Adsorbent Using Dithizone Immobilization for Cd(II) Ions Removal." Jurnal Kimia Sains dan Aplikasi 28, no. 4 (2025): 215–24. https://doi.org/10.14710/jksa.28.4.215-224.

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The adsorption of Cd(II) ions onto an adsorbent of dithizone-immobilized coal fly ash (DCFA) was done using batch experiments. In this study, coal fly ash was initially activated using hydrochloric acid, and then its surface was modified by dithizone. The immobilization of activated coal fly ash (ACFA) with dithizone has been carried out to increase the adsorption capacity as the adsorbent of Cd(II) ions. The synthesized adsorbents (DCFA and ACFA) were characterized by FT-IR, XRD, TGA-DTA, adsorption-desorption N2 (BET), and SEM to confirm the successful immobilization of dithizone on the acti

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38

Ntoi, Lumanyano L. A., Blenerhassitt E. Buitendach, and Karel G. von Eschwege. "Seven Chromisms Associated with Dithizone." Journal of Physical Chemistry A 121, no. 48 (2017): 9243–51. http://dx.doi.org/10.1021/acs.jpca.7b09490.

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39

D'Urso, Antonino, Crist N. Filer, Mahendra Suryan, and C. T. Peng. "Dithizone-14C labelling and characterization." Journal of Labelled Compounds and Radiopharmaceuticals 46, no. 12 (2003): 1173–76. http://dx.doi.org/10.1002/jlcr.778.

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40

Fu, Junqing, Xiaoyan Wang, Jinhua Li, Yangjun Ding, and Lingxin Chen. "Synthesis of multi-ion imprinted polymers based on dithizone chelation for simultaneous removal of Hg2+, Cd2+, Ni2+ and Cu2+ from aqueous solutions." RSC Advances 6, no. 50 (2016): 44087–95. http://dx.doi.org/10.1039/c6ra07785d.

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41

Guo, Yuecheng, Chunlan Huang, Liyan Liu, et al. "Paneth Cell Ablation Aggravates Pancreatic and Intestinal Injuries in a Rat Model of Acute Necrotizing Pancreatitis after Normal and High-Fat Diet." Mediators of Inflammation 2019 (November 11, 2019): 1–19. http://dx.doi.org/10.1155/2019/8474523.

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We previously reported that acute necrotizing pancreatitis (ANP) after normal or high-fat diet is associated with a decreased number of Paneth cells in ileal crypts. Here, we ablated Paneth cells in a rat model of ANP after normal and high-fat diet to investigate the effects on disease symptoms. Adult male Sprague-Dawley rats received standard rat chow or a high-fat diet for 2 weeks, after which they were treated with dithizone to deplete Paneth cells. Six hours later, ANP was established by retrograde injection of sodium taurocholate into the biliopancreatic duct. Rats were sacrificed at 6, 1

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42

Rohmah, Dini Novi, Nurul Hidayat Aprilita, and Mudasir Mudasir. "Modification of Coal Fly Ash with Dithizone for Adsorption of Ni(II) Metal Ion." Key Engineering Materials 927 (July 29, 2022): 20–27. http://dx.doi.org/10.4028/p-194e0w.

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Adsorption of Ni(II) ion onto adsorbent of dithizone-immobilized coal fly ash (IFA) has been investigated in batch experiments. The activated coal fly ash (AFA) and its dithizone modification were characterized by FT-IR and XRD. Several parameters influencing the adsorption of Ni (II) ions on both adsorbents including effect of pH, adsorbent dosage, contact time and initial concentration on the efficiency of the adsorption of Ni (II) ion were investigated. The optimum condition of Ni(II) adsorption was found at pH 4, adsorbent dosage of 0.02 g, contact time of 60 min and initial Ni (II) ion co

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43

Zhang, Zhong, Jinhua Li, Xingliang Song, Jiping Ma, and Lingxin Chen. "Hg2+ion-imprinted polymers sorbents based on dithizone–Hg2+chelation for mercury speciation analysis in environmental and biological samples." RSC Adv. 4, no. 87 (2014): 46444–53. http://dx.doi.org/10.1039/c4ra08163c.

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44

Gupta, Sandeep, and Rajiv Prakash. "Photochemically assisted formation of silver nanoparticles by dithizone, and its application in amperometric sensing of cefotaxime." J. Mater. Chem. C 2, no. 33 (2014): 6859–66. http://dx.doi.org/10.1039/c4tc01090f.

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Hybrid nanomaterial (Ag–DTZH) derived from nanoscale silver protected with dithizone and its oxidation product for the electrosensing of cefotaxime (CFX), which is a third-generation cephalosporin antibiotic drug.

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45

Kalate Bojdi, Majid, Mohammad Behbahani, Fariborz Omidi, and Ghasem Hesam. "Application of a novel electrochemical sensor based on modified siliceous mesocellular foam for electrochemical detection of ultra-trace amounts of mercury ions." New Journal of Chemistry 40, no. 5 (2016): 4519–27. http://dx.doi.org/10.1039/c5nj02973b.

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S-MCF particles were functionalized with dithizone groups, and applied as a new class of mesoporous electrode material for preconcentration and electrochemical detection of trace mercury ions in environmental samples.

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46

Gracias, Wayan, Bonusa Nabila huda, Adhitasari Suratman, and Mudasir Mudasir. "Immobilization of Dithizone on Magnetic Zeolite in Less Toxic Medium and its Application as Adsorbent Cd(II) Ion in Water." Materials Science Forum 1076 (December 8, 2022): 133–42. http://dx.doi.org/10.4028/p-o0173e.

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One of the most dangerous pollutants frequently found in environment are heavy metal ions. Industrial effluents especially those rich in heavy metals are potential pollution source for aquatic environment. In this study, magnetic modification of activated natural zeolite (MZ) was prepared and then used as host for immobilization of dithizone in less toxic alkaline medium. The obtained material, dithizone-immobilized magnetic zeolite (MZD) was applied as adsorbents for adsorption of heavy metal Cd (II) ion in water. The mechanism of interaction between the adsorbent and Cd (II) ion was studied

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47

Zhang, Lei, Xiaodi Gao, Zhichao Xiong, et al. "Preparation of dithizone grafted poly(allyl chloride) core–shell–shell magnetic composite microspheres for solid-phase extraction of ultra-trace levels of Pb(ii), Cu(ii) and Cr(iii) ions." RSC Advances 5, no. 72 (2015): 58873–79. http://dx.doi.org/10.1039/c5ra11238a.

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48

Pelit, Levent, İlknur Bağatır, Füsun Okçu Pelit, and F. Nil Ertaş. "A green photometric method for determination of mercuric ions in saline samples by a single-drop microextraction technique." RSC Adv. 4, no. 61 (2014): 32189–96. http://dx.doi.org/10.1039/c4ra04354e.

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49

Xiao, Ruijie, Rui Qi, and Guirong Cao. "Trace mercury in wate were measured by dispersion-liquid microextraction combined with spectrophotometry." Advances in Computer and Engineering Technology Research 1, no. 1 (2023): 162. http://dx.doi.org/10.61935/acetr.1.1.2023.p162.

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An experimental method was developed for the determination of trace amounts of mercury by dispersion-liquid microextraction combined with spectrophotometry. Undea buffer medium of hydrochloric acid and sodium acetate at pH=4, mrcury ions in the water were extracted by dispersion-liquid microextraction at the wavelength of 410nm, carbon tetrachloride was used as an extractant, methanol was used as a dispersant, dithizone-methanol solution was used as a chelating agent, the optimum conditions for extraction were obtained, Carbon tetrachloride 70uL, methanol 0.75mL, dithizone methanol solution 20

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50

Li, Li, Lanfeng Liao, Yaping Ding, and Hongyan Zeng. "Dithizone-etched CdTe nanoparticles-based fluorescence sensor for the off–on detection of cadmium ion in aqueous media." RSC Advances 7, no. 17 (2017): 10361–68. http://dx.doi.org/10.1039/c6ra24971j.

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In the present work, a new fluorescence probe based on dithizone-etched CdTe nanoparticles was designed for the sensitive and selective detection of cadmium ion in environmental samplesviaa reversible off–on fluorescence mode.

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