Determination of arsenic in steel and cast iron by hydride-generation atomic absorption spectrometry

A procedure is described for the determination of arsenic in steel and cast iron by atomic absorption spectrometry after hydride generation with sodium tetrahydroborate. The samples are decomposed with a nitric/perchloric acid mixture. The data are evaluated directly against acidic standard solutions of arsenic(V). The limit of detection is about 1 μg g^?1 and the precision is better than 4% for concentrations exceeding 10 μg g^?1.