Microdetermination of arsenic in water,spectrophotometrically, by arsine-silver diethyldithiocarbamate-morpholine-chloroform system |
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| Affiliation: | 1. Proteomics Laboratory, Food, Drug & Chemical Toxicology Group, CSIR-Indian Institute of Toxicology Research, 31, Vishvigyan Bhawan, Mahatma Gandhi Marg, Lucknow 226001, (U.P.), India;2. Environmental Carcinogenesis Laboratory, Food, Drug & Chemical Toxicology Group, CSIR-Indian Institute of Toxicology Research, 31, Vishvigyan Bhawan, Mahatma Gandhi Marg, Lucknow 226001, (U.P.), India;3. Analytical Toxicology Division, Regulatory Toxicology Group, CSIR-Indian Institute of Toxicology Research, 31, Vishvigyan Bhawan, Mahatma Gandhi Marg, Lucknow 226001, (U.P.), India;4. Food Toxicology Laboratory, Food, Drug & Chemical Toxicology Group, CSIR-Indian Institute of Toxicology Research, 31, Vishvigyan Bhawan, Mahatma Gandhi Marg, Lucknow 226001, (U.P.), India;5. Department of Bioengineering, Faculty of Engineering, Integral University, Lucknow 226026, (U.P.) India;6. Department of Pathology, King George''s Medical University, Lucknow 226001, (U.P.), India;7. Plant Molecular Biology & Genetic Engineering, CSIR-National Botanical Research Institute, Rana Pratap Marg, Lucknow 226001, (U.P.), India;2. University of Bedfordshire, Luton, United Kingdom |
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| Abstract: | An improved spectrophotometric method for microdetermination of arsenic in water using arsine-silver diethyldithiocarbamate-morpholine-chloroform system is described. Sensitivity and molar extinction coefficient are 0.0055 μg As/ml and 1.35 × 104 M−1 cm−1 at 510 nm. The color is stable for 3 days. Six other systems are also studied and compared including the silver diethyldithiocarbamate-pyridine system. Interference due to 19 diverse ions has been studied. Antimony interference is removed by excess stannous chloride solution. The method replaces the commonly employed less stable arsine-silver diethyldithiocarbamate-pyridine method. |
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