摘要
本文研究了砷铋钼蓝光度法的显色条件,并拟定了岩石矿样中砷的测定方法。络合物在725和850nm处有吸收峰.
A sensitive photometric method for the determination of arsenic with the formation of As-Bi-Mo blue complex in aqueous phase was described.The molar absorptivity of the complex is 1.27×10^(4)L·mol^(-1)·cm^(-1)at 725 nm and 1.5×10^(4)L·mo^(-1)·cm^(-1)at 850 nm.The molar ratio of As:Mo:Bi is 1:12:2.Beer’s law is obeyed in the range 0-20μg/5ml As.This complex stands stable within eight hours.This method has been applied to the analysis of rocks.
出处
《岩矿测试》
CAS
1987年第3期204-206,I0013,共4页
Rock and Mineral Analysis
