UPLC －MS/MS 法同时测定水中甲萘威、呋喃丹和阿特拉津

摘要

Carbaryl,carbofuran and atrazine in water were detected simultaneously by UPLC-MS /MS after filtered thought 0.22 μm filter.The effect of instrument conditions and filter materials on the determination of carbaryl,carbofuran and atrazine were investigated.Under the optimized conditions,the linear range was 0.01 μg /L ~1 0.0 μg /L.The detection limits for carbaryl,carbofuran and atrazine was 6.1 ng /L,2.8 ng /L and 3.1 ng /L,respectively.Average recoveries at three spiking levels were in the range of 96.4% ~1 1 0%. The established method was applied to detect carbaryl,carbofuran and atrazine in source water and drinking wa-ter.All of the target compounds were not detected.The average recoveries of actual sample spiked with carbaryl, carbofuran and atrazine were between 81 .4% and 97.2%.%水样经聚四氟乙烯滤头过滤，直接用超高效液相色谱－三重四极杆串联质谱（UPLC －MS ／MS）同时测定甲萘威、呋喃丹和阿特拉津。通过试验考察不同材质滤头和各仪器条件对测定的影响，并确定最佳分析条件，使该方法在0．01μg ／L ～10．0μg ／L 范围内线性良好。甲萘威、呋喃丹和阿特拉津的方法检出限分别为6．1 ng ／L、2．8 ng ／L、3．1 ng ／L，空白水样的3个质量浓度加标回收率在96．4％～110％之间。该方法用于测定实际水源水及饮用水中的甲萘威、呋喃丹和阿特拉津，结果均未检出，实际水样平均加标回收率为81．4％～97．2％。