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环境化学  2015 

DOI:10.7524/j.issn.0254-6108.2014.05.012

Keywords: 固相微萃取,气相色谱-质谱,多环芳烃,水体

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Abstract:

建立了固相微萃取（Solidphasemicroextraction，SPME）与气相色谱-质谱（Gaschromatographyandmassspectrometer，GC-MS）联用测定水体中16种多环芳烃的快速分析方法.对固相微萃取纤维的类型、萃取时间、萃取温度及搅拌速度等萃取条件进行了考察和优化.结果表明，最佳萃取条件为100μm聚二甲基硅氧烷（Polydimethylsiloxane，PDMS）涂层的萃取头，萃取时间40min，萃取温度35℃，搅拌速度480r·min-1.该分析方法的检测限为0.006—0.008ng·mL-1，线性范围为0.01—50ng·mL-1，线性相关系数0.9815—0.9982，RSD<10.10%.最后，采用此方法测定了太湖水体中的16种多环芳烃，实际水体加标回收率在70.31%—118.52%，在4个采样点中有2个采样点检测出萘，其他PAHs未检出.

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