建立了超声波提取-气相色谱法同时测定土壤中21种酚类化合物的分析方法.用二氯甲烷和正己烷混合溶剂提取土壤中的酚类化合物,提取液经碱性水溶液分配净化,去除非酸性有机杂质,再酸化萃取酚类化合物,浓缩后采用气相色谱-氢火焰离子化检测器进行检测,外标法定量.以10g土壤样品计,酚类化合物的检出限为0.01~0.06 mg/kg.实际样品添加回收试验的回收率为62.9%~111.4%,相对标准偏差为4.3% ~ 24.0%(n=6),准确度和精密度均较好.结果表明:该法操作方便,净化效果好,可用于土壤中多种酚类化合物的测定.
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