摘要
本文采用微孔滤膜采集某研究院线切割机车间含铬及其化合物的气溶胶,经消解后加高氯酸铵作抑制剂,用火焰原子吸收法测定。采样效率为95～96％;回收率为93～97％;变异系数为1.2～1.7％。
A method for determinating chromium in the air of the workshop of NC wire cutting machine by air-acetylene flame AAS has been described. The chromium and its com-pounds in aerosol were collected with 0.8 um microporous membrane. The efficiency of its collection may reach 95～96％.The collected samples were digested by HCIO_4-HNO_3(1+9) and followed by AAS determination in the presence of NH_4CIO_4(IM).The recovery was 93～97%,and RSD, 1.2～1.7％
出处
《重庆环境科学》
1989年第5期49-51,共3页
Chongqing Environmental Science
