【摘要】 采用吹扫捕集-气相色谱/质谱联用法测定水中9种酯类有机物,加入硫酸钠盐提高灵敏度,当硫酸钠过饱和时,吹扫捕集效率最高。9种酯类有机物在一定的质量浓度范围内线性关系良好,方法检出限为0.14μg/L～0.25μg/L,模拟样品平行测定的RSD为0.6%～1.8%,加标回收率为80%～106%。更多还原

【Abstract】 The method was established for determination of nine ester compounds in water by gas chromatography-mass spectrometry with purge and trap.The sensitivity of method was improved by increasing sodium sulfate quantity.Purge and trap obtained the highest efficiency when sodium sulfate became supersaturate.Calibration curves exhibited good linearity in certain concentration.Detection limits ranged from 0.14 μg/L to 0.25 μg/L.RSD of simulation duplicated samples ranged from 0.6% to 1.8%.The spiked recoveries ranged from 80% to 106%.更多还原