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da qi he shui zhong chao wei liang gong de jin gong qi hua fen xi
Pages: 311-315
Year: Issue:  5
Journal: Journal of Hygiene Research

Keyword:  活性炭捕集剂有机泡沫微粒石英砂机械强度汞齐化微量汞逸出玻璃微珠;
Abstract: <正> 环境中汞的分析方法很多。对气体和水中的汞目前广泛采用的方法为还原气化、无焰原子吸光法。此法对一般微量的汞也很有效,但近年来对测知汞的数量级要求越来越高,上述方法的灵敏度尚嫌不够,必须先行对超微量汞进行富集,才能有效地测定。利用汞和金、银等金属接触时,可引成汞齐的作用来进行富集吸收,然后定量地释放测定,谓之金(或银)-汞齐化分析。汞的富集方法虽有用液体吸收液和活性炭、有机泡沫
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