建立了检测饮用水中毒死蜱的固相萃取/气相色谱/质谱法,该方法对毒死蜱的测定下限可达0.000 6 mg/L,远低于国标法的0.002 mg/L。线性范围为0.5～5.0 mg/L,样品平均加标回收率在74.86%～86.14%之间,测定结果的相对标准偏差<5.4%。该方法简单、灵敏度高、准确、重现性好,可用于饮用水中痕量毒死蜱的测定。 A solid-phase extraction / gas chromatography / mass spectrometry was developed for the determination of chlorpyrifos in drinking water. The determination limit of chlorpyrifos was 0.0006 mg / L, which was much lower than 0.002 mg / L of GB. The linear range was from 0.5 mg / L to 5.0 mg / L. The average recoveries of spiked samples ranged from 74.86% to 86.14%. The relative standard deviations (RSDs) were less than 5.4%. The method is simple, sensitive, accurate and reproducible, and can be used for the determination of trace chlorpyrifos in drinking water.