Determination of Silver Content in the Ore by Extraction Colorimetric Method with Diphenylthiocarbazone-Chloroform-Benzene Mixed Solvent

Abstract:

This paper introduced an approach of using diphenylthiocarbazone-chloroform benzene mixed solvent to determine silver content in the ore by extraction colorimetric method. Ammonium chloride-sodium chloride was used for sample melting, and hydrochloric acidic water was adopted to digestion. Then, some parts of the interference elements were separated from it. Silver was dissolved quantitatively out of the ore, and formed complex negative ion of [AgCl-in the liquor. Chloroform-benzene mixed solvent as extraction solvent of diphenylthiocarbazone could improve the stability of diphenylthiocarbazone and silver complex, thus it could raise the accuracy and precision, simplify the operate procedure, and also avoid that phosgene pollute to the environment.

• Periodical: Applied Mechanics and Materials (Volumes 448-453)
• Pages: 3837-3840
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.448-453.3837
• Online since: October 2013
• Authors: Jin Hui Yang, Li Liu, Shi Liang Dai, Jin Song Wang, Hai Yan Liu
• Keywords: Benzene, Chloroform, Diphenylthiocarbazone, Extraction Colorimetric Method, Silver

References

[1] Wang Zhimin. Spectrophotometer determination of trace silver, physical and chemical testing-Chemical Analysis . 2007, 43 (9): 792 -793.

[2] Chen Yujing, Wang Yubao, Li Guihua. Microwave Digestion - Kinetic Spectrophotometer determination of trace gold silver, Metallurgical Analysis, 2007, 27 (11): 48-50.

[3] Wang Ruibin. Chloroform extraction dithizone visual colorimetric quick determination of silver in water [J], Science Technology and Engineering, 2006, 6 (12): 1669-1671.

[4] Xing Yang, Zhang Dong. Dithizone -CCl- extraction - spectrophotometer determination of copper and lead in water continuous, Physical Testing-Chemical Analysis, 2007, 43 (7): 561-563.