本文提出了利用硅胶管代替大气泡采集车间空气中的氨和纳氏比色法定量分析的方法。

This paper puts forword a method of collecting ammonia in the air of workshop by silicagel tube replacing the big bubble collection , and analyzing quantitavely with Nashi - colorimetry.

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分析了比色法定量测定己酸含量时容易碰到的几个问题，对显色的各个影响因素进行了研究，提出了合理的比色方法。

Several problems in determinating hexanoic acid by colorimetry was analyzed, factors which influence col-or reaction were studied, the resonable colorimetric method was introduced.

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