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Please use this identifier to cite or link to this item: http://eprint.iitd.ac.in/handle/2074/634

Title: Differential pulse polarographic determination of tin in alloys and environmental samples after preconcentration with the ion pair of 2-nitroso-1-naphthol-4-sulfonic acid and tetradecyldimethylbenzylammonium chloride onto microcrystalline naphthalene or by column method
Authors: Taher, Mohammad Ali
Puri, Bal Krishan
Keywords: Differential pulse polarography
Tin determination
Standard alloys
Environmental samples
2-Nitroso-1-naphthol-4 sulfonic acid
Tetradecyldimethylbenzylammonium chloride
Tetradecyldimethylbenzylammonium chloride
Microcrystalline naphthalene
Issue Date: 1999
Citation: Talanta, 48(2), 355–362
Abstract: A highly selective, sensitive, rapid and economical differential pulse polarographic method has been developed for the determination of trace amount of tin in various standard alloys and environmental samples after adsorption of its 2-nitroso-1-naphthol-4-sulfonic acid- etradecyldimethylbenzylammonium chloride on microcrystalline naphthalene in the pH range of 8.7–10.6. After filtration, the solid mass is shaken with 8–10 ml of 3.5 M hydrochloric acid and tin is determined by differential pulse polarography (DPP). Tin can alternatively be quantitatively adsorbed on 2-nitroso-1-naphthol-4-sulfonic acid-tetradecyldimethylbenzylammonium-naphthalene adsorbent packed in a column and determined similarly. The detection limit is 0.15 mg ml-1 (signal to noise ratio-2) and the linearity is maintained in the concentration range 0.5–220 mg ml-1 with a correlation coefficient of 0.9995 and relative standard deviation of 90.88%. Characterization of the electroactive process included an examination of the degree of reversibility.Various parameters such as the effect of pH, volume of aqueous phase and interference of a number of metal ions on the determination of tin has been studied in detail to optimize the conditions for determination in standard alloys and environmental samples.
URI: http://eprint.iitd.ac.in/dspace/handle/2074/634
Appears in Collections:Chemistry

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