【摘要】 利用超声提取、吸附色谱分离以及气相色谱和气 质谱联用的方法对土壤中痕量半挥发性有机污染物进行了提取、分离以及定性定量分析。优化了硅胶和弗罗里土吸附净化正构烷烃和多环芳烃以及有机氯农药和酞酸酯类化合物的分离条件。正构烷烃、多环芳烃、有机氯农药和酞酸酯的平均回收率分别为 82 %～ 1 0 5 %、1 0 3 %～ 1 1 0 %、94%～1 1 7%和 86%～ 1 1 4% ;检出限分别为 3～ 2 2、3～ 42、0 .0 0 4～ 0 .0 88和 1 0～ 2 2 0ng g;相对标准偏差均小于 1 5 %。本方法用于分析北京近郊土壤中的上述有机污染物 ,经质量控制分析 ,结果可靠更多还原

【Abstract】 We developed a method for the determination of trace semi-volatile organic compounds (SVOC) in soil by ultrasonic extraction, column separation and gas chromatography-mass spectrometry (GC-MS). The conditions for separation of SVOC adsorbed by silica gel or Florisil columns were optimized. The average recovery was 82%～105% for n-alkanes, 103%～110% for polycyclic aromatic hydrocarbons (PAHs), 94%～117% for organochlorine pesticides (OCPs) and 86%～114% for phthalate esters (PAEs). The limit of detection was 3～22, 3～42, 0.004～0.088 and 10～220 ng/g for n-alkanes, PAHs, OCPs and PAEs, respectively. The relative standard deviations (RSD) were all below 15%. The method was used for the analysis of SVOC in soil samples in the Beijing suburban areas. The results of quality control showed that the method allowed the reliable investigation.更多还原