铅，总汞，总砷，铜，锌，镉，锡及其它重金属。

Lead, total Hg, total As, Cu, Zn, Cd, Sn, and many other heavy metals.

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比对结果表明，干法灰化适合于测定虾粉中总砷的含量，湿法消解测定总砷的含量偏低，微波消解不适合测定虾粉中总砷的含量。

The result obtained by using wet digestion was lower than the actual content. Microwave digestion was not suitable for determination of total arsenic in shrimp powder.

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介绍了用砷、锌和硫酸合成高纯砷烷的方法，产品纯度为99.995%，总收率为85%。

This article provides the synthesis methods of high purity Arsine by arse nic, zinc and sulfuric-acid. The purity is 99.995%. Total yield reaches 85%.

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介绍了用砷、锌和硫酸合成高纯砷烷的方法，产品纯度为99.995%，总收率为85%。

This article provides the synthesis methods of high purity Arsine by arse nic, zinc and sulfuric-acid. The purity is 99.995%. Total yield reaches 85%.

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