硝酸镧共沉淀ICP-AES法测定纯铜中砷、铋、铁、锰、铅、锑

ICP-AES DETERMINATION OF ARSENIC、BISMUTH、IRON、MANGANESE、LEAD、STIBIUM IN PURE COPPER BY COPRECIPITATION WITH LANTHANUM NITRATE

本文介绍了采用加大称样量后用硝酸镧和纯铜中微量的砷、铋、铁、锰、铅、锑共沉淀,将它们和大量的铜基体分离后溶解,用ICP-AES法测定这些元素的方法,此方法能进一步提高低含量物质的检验结果的准确度。

Improved method for determination of arsenic 、bismuth 、iron 、 manganese 、lead 、 stibium in pure copper was described in this paper. Trace amount of arsenic、bismuth、iron、manganese、lead、stibium were codeposited with lanthanum nitrate after increasing the amount of sample. And they were separated from the copper matrix. Dissolve the deposition with nitric acid and determine it by ICP - AES. The method can improve the reliability of the test results of trace amount of arsenic 、 bismuth、iron、manganese、 lead,stibium of pure copper.