气相色谱-串联质谱法测定土壤中多环芳烃和多氯联苯

发布时间：2018-06-12 01:19

本文选题：土壤 + 多环芳烃　；参考：《分析科学学报》2017年02期

【摘要】：研究土壤中持久性有机污染物的含量可以为区域环境治理和来源解析提供基础数据。本文通过固相萃取结合气相色谱-串联质谱法建立了16种多环芳烃和15种多氯联苯的检测方法,并优化了固相萃取净化方法、色谱条件以及质谱碰撞能量。结果表明16种多环芳烃和15种多氯联苯的标准曲线线性关系良好,方法线性相关系数r~20.999,方法的检出限为0.1~2.5μg·kg~(-1),16种多环芳烃的平均加标回收率范围为62.5%~113.5%,相对标准偏差在2.3%~8.2%之间,15种多氯联苯的平均加标回收率范围为62.6%~91.4%,相对标准偏差在5.2%~7.8%之间。方法的准确度和精密度较高,通过对实际样品的测定,说明该方法具有较低的检出限及较强的抗干扰能力,能满足土壤中多环芳烃和多氯联苯的检测要求。
[Abstract]:The study of the content of persistent organic pollutants in soil can provide basic data for regional environmental control and source analysis. In this paper, 16 polycyclic aromatic hydrocarbons and 15 polychlorinated biphenyls were established by solid phase extraction combined with gas chromatography tandem mass spectrometry, and the solid phase extraction purification, chromatographic conditions and mass mass collision energy were optimized. The results showed that the linear relationship between the standard curves of 16 polycyclic aromatic hydrocarbons and 15 polychlorinated biphenyls was good. The linear correlation coefficient of the method was r~20.999, the detection limit of the method was 0.1~2.5 G. Kg~ (-1), the average recovery rate of the 16 polycyclic aromatic hydrocarbons was 62.5%~113.5%, the relative standard deviation was between 2.3%~8.2%, and the average recovery of 15 polychlorinated biphenyls was recovered. The rate range is 62.6%~91.4% and the relative standard deviation is between 5.2%~7.8%. The accuracy and precision of the method are high. By measuring the actual samples, it shows that the method has a lower detection limit and strong anti-interference ability, and can meet the testing requirements of polycyclic aromatic hydrocarbons and polychlorinated biphenyls in the soil.
【作者单位】：辽宁省分析科学研究院辽宁省分析测试技术研究重点实验室;
【基金】：国家自然科学基金(No.21307051) 辽宁省自然科学基金(No.2013020152)
【分类号】：X833;O657.63

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