title: Zeeman effect electrothermal atomic absorption spectrophotometry with matrix modification for the determination of arsenic in urine.
abstract: Arsenic was determined in urine by electrothermal atomic absorption spectrophotometry using Zeeman Effect background correction and after matrix modification with 5% nickel nitrate. Mean recovery of urine samples spiked with 100 micrograms . L-1 dimethylarsinic acid was 97.9 micrograms . L-1. Within-run CV was 2.4%, between-run CV was 7.3% and the detection limit was determined to be 10.0 micrograms . L-1. The method can be used for the rapid screening of urine samples for elevated arsenic levels.
mesh_terms: D001151:Arsenic / Q000652:urine*; D006801:Humans; D007202:Indicators and Reagents; D009532:Nickel / Q000032:analysis; D013054:Spectrophotometry, Atomic / Q000379:methods
chemical_list: D007202:Indicators and Reagents; D009532:Nickel; D001151:Arsenic