SCHEDULED MAINTENANCE
Germanium determination by hydride generation atomic emission spectrometry: simultaneous signal enhancement and interference suppression
Abstract
Germanium has been determined by reduction with sodium tetrahydroborate(III). The detection limit for the method using a d.c. plasma is 1 ng for a 10-ml sample. The presence of ammonium peroxodisulphate results in the enhanced recovery of germanium and complete suppression of interferences from 1000 p.p.m. of Al, As, Cu, Hg, Pb and Sn. Severe interferences from 1000 p.p.m. of Cd, Co, Ni and Zn were only partly overcome using a combination of thiourea and ammonium peroxodisulphate or by using mercury(II). Interferences may be suppressed because the peroxodisulphate maintains these elements in higher oxidation states. Application of the method to ferrous dusts is described.
Please wait while we load your content...
