The determination, in forensic toxicology, of metallic poisons by paper chromatography |
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| Authors: | Dharam Narain Tripathi and Swarup Narain Tewari |
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| Affiliation: | (1) Clinical Laboratory, 18/3A, The Mall, Kanpur, India;(2) Present address: Forensic Science-Laboratory, Home-office, London |
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| Abstract: | Summary Precipitation of ThFe(CN)6 from a solution of thorium nitrate with potassium ferrocyanide at varius concentrations has been carried out for the estimation of thorium. The precipitate was filtered and the excess of ferrocyanide was titrated with standard ceric sulphate solution. The amount of potassium ferrocyanide thus used was obtained and the amount of thorium calculated.Having established by the physico-chemical methods that the formula for thorium ferrocyanide is ThFe(CN)6, under all conditions, it has now become possible to estimate thorium volumetrically by the ferrocyanide method. |
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