Determination of Arsenic and Antimony in Eighty-Five Geochemical Reference Samples by Automated Hydride Generation and Electrothermal Atomic Absorption Spectrometry

The arsenic and antimony contents of 85 geochemical reference samples have been determined by atomic absorption spectrometry with hydride generation and heated quartz cell atomizer. The sample is decomposed with a mixture of perchloric, nitric and hydrofluoric acids and potassium permanganate solution; interferences are eliminated by addition of potassium iodide, aluminium chloride and ascorbic acid. The agreement between the present results and published data is fairly good.