【引用本文】 赖永忠, . 顶空进样-固相微萃取测定饮用水源水中吡啶[J]. 岩矿测试, 2011, 30(5): 596-600.
 . Determination of Pyridine in Drinking Source Water by Head Space Sampling-Solid Phase Microextraction[J]. Rock and Mineral Analysis, 2011, 30(5): 596-600.

顶空进样-固相微萃取测定饮用水源水中吡啶

汕头市环境保护监测站, 广东 汕头 515041

收稿日期: 2011-03-05  修回日期: 2011-05-13 

Determination of Pyridine in Drinking Source Water by Head Space Sampling-Solid Phase Microextraction

Shantou Enviromental Monitoring Station, Shantou 515041, China

Received Date: 2011-03-05
Revised Date: 2011-05-13

摘要:用75 μm CarboxenTM-Polydimethylsiloxane(CAR-PDMS)固相微萃取头顶空萃取15 mL水样中的吡啶,萃取物用气相色谱-质谱法进行分离和检测,采用内标法和质谱的选择离子监测模式进行定量分析。优化了顶空进样-固相微萃取条件,获得较佳的萃取温度(58.0℃)和萃取时间(40 min)。在优化的条件下,方法检出限为1.5 μg/L,标准曲线的线性相关系数为0.9994,线性范围为2.5~50.0 μg/L;饮用水源水和纯水加标平均回收率为75.6%~81.3%,相对标准偏差(RSD,n=6)为9.60%~12.21%。使用顶空萃取方式可避免样品基体的复杂性,有利于保护萃取头涂层,同时无需使用有机萃取溶剂;使用质谱检测器可减小假阳性带来的影响。顶空进样-固相微萃取操作简单、环保、灵敏度高,适合用于饮用水源水中吡啶的监测分析。

关键词: 吡啶, 饮用水源水, 顶空进样-固相微萃取, 气相色谱-质谱法

Determination of Pyridine in Drinking Source Water by Head Space Sampling-Solid Phase Microextraction

KEY WORDS: pyridine, drinking, source, water

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顶空进样-固相微萃取测定饮用水源水中吡啶

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