为了监测河口环境中大气、水体、土壤、底泥、作物等样品中有机污染物的组成、含量、分布及变迁 ,最常使用的手段是气相色谱 /质谱联用。但由于样品组成极为复杂 ,危及人体健康的毒物往往含量甚微 ,同时存在种种干扰杂质 ,为此必须对样品进行预处理 ,以消除干扰 ,富集、浓缩待 In order to monitor the composition, content, distribution and change of organic pollutants in the atmosphere, water, soil, sediment, crops and other samples in the estuary environment, the most commonly used method is GC / MS. However, due to the extremely complicated sample composition, the poisonous substances endangering human health tend to be low in content and interfere with the impurities at the same time. Therefore, the samples must be pre-treated to eliminate interference, enrichment and concentration