Sorption of Thiocyanate Silver Complexes and Determination of Silver by Diffuse Reflectance Spectroscopy

Bulletin of the Korean chemical society

N. G. Goryaeva¹  O. N. Kononova¹  A. G. Kholmogorov¹  S. V. Kachin¹  T. A. Bulavskaya¹  T. V. Vorontsova¹ 

关键词: Silver;    Ion exchange;    Thiocyanate complexes;    Diffuse reflectance spectroscopy;   

DOI  :  

学科分类：化学（综合）

来源: Korean Chemical Society

【 摘 要 】

The present paper is focused on sorption concentration of silver (I) on some complex-forming ion exchangers in the initial thiocyanate form and subsequent determination of Ag(I) in the phase of anion exchanger AN-25 by diffuse reflectance spectroscopy. The sorption and kinetic characteristics of the sorbents were investigated. The apparent stability constants of thiocyanate silver complexes in the ion exchanger phase were calculated. The sorption-spectroscopic method is proposed for Ag(I) determination in aqueous solutions. The calibration curve is linear in the concentration range of 10-200 mg/L (sample volume is 10.0 mL) and the detection limit is 2 レg/mL. The presence of Na⁺, K⁺, Mg²⁺ (macrocomponents) as well as of Ni (II), Co (II), Cu (II) do not hinder the determination of silver (I).

【 授权许可】

Unknown