摘要
本文用特制的聚四氟乙烯(PTFE)双层消化罐,将发样置于内层,加入HNO_3+HCIO_4作溶剂,微波炉消化试样。外层用MgO作吸收剂,在密闭状态下除去溶样后残余的HNO_3。为氢化物原子荧光法快速测定人发中痕量As提供了一个良好条件。
The samples are dissolved with HNO3+HCIO4 in a sealed double-walled PTFE vessel by microwave heating. The residual HNO3 is absorbed with MgO placed in the outer wall to prevent its harmful effect in the following reducing process. The procedure has been applied to determine trace arsenic in human hair by hydride generation non-dispersive AFS.
出处
《岩矿测试》
CAS
CSCD
北大核心
1990年第1期65-67,共3页
Rock and Mineral Analysis
