Determination of Copper, Total Chromium and Silver in Impregnated Carbon

Defence Science Journal

S.R.S. Sachan¹  S.K. Pandy¹  Beer Singh¹  C.G. Padam Kumar¹  S. Madhusudanan¹  Seema Agarwal¹ 

[1] Defence Research & Development Establishment, Gwalior

关键词: Estimation;    Absorption spectroscopy;   

DOI  :  

学科分类：社会科学、人文和艺术（综合）

来源: Defence Scientific Information & Documentation Centre

【 摘 要 】

Carbon samples were impregnated withammonical solutions of silver salt alone and in combination with Cu andCr salts. The impregnated samples were characterised for Cu, total Crand Ag. Copper was extracted as CuCl/sub 2/ using concentrated HCl andCr with NaOH. Silver was extracted from impregnated carbon using HNO3and sodium thiosulphate (Na/sub 2/S/sub 2/O/sub 3/-5H/sub 2/0) and ashedimpregnated carbons using aqua regia. The extracted metals in theirsolutions were quantitatively determined by titrimetric method andatomic absorption spectroscopy. The results were within acceptablelimits of error. Sodium thiosulphate is recommended for extraction ofAg, as it accomplishes complete leaching of Ag faster than the otherextracting agents.

【 授权许可】

Unknown