Arsenic is separated from the bismuth matrix by ion exchange method and determined by hydride generation atomic absorption spectrophotometry.
该方法用离子交换将砷同基体铋分离，然后用氢化物发生原子吸收光谱法测定。
2
Rusults above concludes that combination of FIA, spectrophotometry and P-matrix model could detect the emergency pollution of heavy metals in the food water and alarm early this pollution on-line.