Arsine-heated quartz cell

Peats [14] described a method for the analysis of arsenic in dried algae and similar biological material. 100 mg of dried sample was digested with 1 ml of nitric, perchloric and sulphuric acids (23 23 1) by heating first to 150°C for one hour then to 500°C to near dryness and the material allowed 

Peter et al. [15] used an electrically heated quartz cell for the determination of arsenic in urine. Urine, 2 ml, was digested with 2 ml of nitric and perchloric acids (1 1). Aliquots of this solution were used for the subsequent arsine generation by sodium borohydride. The normal level of arsenic in urine was found to be less than lOppb. 

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