气相色谱法快速测定水中硝基苯类化合物研究

Determination of Nitrobenzene Compounds in Water by Gas Chromatography

采用液液萃取前处理技术,利用二氯甲烷作为萃取剂,用FID检测器进行测定。该方法中,10种硝基苯类化合物在15 min内能够很好地分离,加标回收率为83.1%~106.2%。该方法简单、快捷、通用,且所用有机试剂毒性相对较低,具有较好的推广性与实用性。应用该方法对湘江和东江湖水中的硝基苯类化合物含量进行调查,表明该河流与湖库水质未受到硝基苯类化合物的污染。

This study determines nitrobenzenes of special organic matter in water with liquid- liquid extraction pre- processing technology,separate with capillary column chromatography and FID detector to determine. In this method,ten nitrobenzenes were separated perfectly and determined within 15 min. Recovery was 83. 1% ~ 106. 2%; The method is simple,qui. It was used to determine the nitrobenzene compounds in water samples from river. The results showed that the area is not seriously polluted by nitrobenzene compounds.