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发明授权
CN106526018B 气相色谱-质谱法检测土壤和水中有机溶剂残留的方法 有权

气相色谱-质谱法检测土壤和水中有机溶剂残留的方法
摘要：
本发明涉及农药助剂残留检测、药物检测、环境安全等领域，具体而言，涉及一种气相色谱‑质谱法检测土壤和水中有机溶剂残留的方法，该方法包括如下步骤：1)、将待检测的土壤和水分别经提取溶剂和无水Na2SO4预处理后离心取上清液并过滤得到提取液；2)、采用气相色谱‑质谱测定步骤1)中的提取液；所用气相色谱柱为DB‑WAX毛细管色谱柱，过色谱柱前在所述提取液中添加无水MgSO4；所述有机溶剂包括甲苯、二甲苯、DMF和DMSO；所述二甲苯包括邻二甲苯、对二甲苯和间二甲苯。该方法可快速、便捷、准确、灵敏地对土壤和水等环境样品中的有机溶剂残留量进行检测。
摘要（英）：

The invention relates to the fields of pesticide adjuvant residue detection, drug detection, environmental safety and the like, in particular to a method for detecting residual organic solvents in soil and water by adopting a gas chromatography-mass spectrometry method. The method comprises the following steps that 1, the soil and water to be detected are respectively subjected to solvent extraction and anhydrous Na2SO4 pretreatment and then are centrifuged, supernatant is obtained and filtered to obtain an extraction solution; 2, the gas chromatography-mass spectrometry is adopted to detect the extraction solution in the step 1, wherein a used gas chromatography column is a DB-WAX capillary chromatographic column, and MgSO4 is added in the extraction solution before the chromatographic column is used. Organic solvents include toluene, xylene, DMF and DMSO. The xylene includes dimethylbenzene, paraxylene and dimethylbenzene. The method is fast, convenient and accurate and sensitively detects organic solvent residue quantity in environmental samples such as soil and water.

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