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吹扫捕集气质联用法测定水中4种挥发性有机物
引用本文:秦明友,张新申,康莉,陈刚才,杨清玲.吹扫捕集气质联用法测定水中4种挥发性有机物[J].环境科学与技术,2013(1):93-96.
作者姓名:秦明友  张新申  康莉  陈刚才  杨清玲
作者单位:四川大学制革清洁技术国家工程实验室;四川省泸州市环境保护监测站;四川省泸县第一中学;重庆环境科学研究院
基金项目:国家高技术研究发展计划(“863”计划)资助项目(2007AA092001);国家水体污染控制与治理科技重大专项(2009ZX07104-001)
摘    要:建立了吹扫捕集气相色谱质谱联用法测定水中吡啶、丙烯腈、四乙基铅和松节油的方法,对吹扫时间进行了优化,研究了pH值对吹扫捕集率的影响。结果表明,在pH值为610时,吹扫时间为11 min时吹扫捕集效率最高,用脉冲控制自动进标样的方法绘制工作曲线,曲线相关系数在0.99610时,吹扫时间为11 min时吹扫捕集效率最高,用脉冲控制自动进标样的方法绘制工作曲线,曲线相关系数在0.9960.999 9之间,方法的检出限在0.060.999 9之间,方法的检出限在0.061.0μg/L之间,相对标准偏差在1.1%1.0μg/L之间,相对标准偏差在1.1%6.2%之间,方法具有很好的线性和精密度。方法用于地表水、生活污水和化工废水中吡啶、丙烯腈、四乙基铅和松节油测定,并进行了加标回收实验,地表水回收率在86.8%6.2%之间,方法具有很好的线性和精密度。方法用于地表水、生活污水和化工废水中吡啶、丙烯腈、四乙基铅和松节油测定,并进行了加标回收实验,地表水回收率在86.8%112.1%之间,生活污水回收率在91.9%112.1%之间,生活污水回收率在91.9%99%之间,废水回收率在82.2%~104.3%之间,表明方法具很好的准确度,可用于地表水、生活污水和化工废水中吡啶、丙烯腈、四乙基铅和松节油测定。

关 键 词:吡啶  丙烯腈  四乙基铅  松节油  吹扫捕集  气相色谱/质谱

Determination of Pyridine,Tetraethyl Lead,Turpentine Oil,Acrylonitrile in Water by Gas Chromatography/Mass Spectrometry Coupled with Purge and Trap
QIN Ming-you,ZHANG Xin-shen,KANG Li,CHEN Gang-cai,YANG Qing-ling.Determination of Pyridine,Tetraethyl Lead,Turpentine Oil,Acrylonitrile in Water by Gas Chromatography/Mass Spectrometry Coupled with Purge and Trap[J].Environmental Science and Technology,2013(1):93-96.
Authors:QIN Ming-you  ZHANG Xin-shen  KANG Li  CHEN Gang-cai  YANG Qing-ling
Institution:1.National Engineering Laboratory for Clean Technology of Leather Manufacture,Sichuan University,Chengdu 610065,China;2.Luzhou Environmental Protection Monitoring Centre,Luzhou 646000,China;3.No.1 Middle School of Luxian City,Luzhou 646124,China;4.Chongqing Academy of Environmental Science,Chongqing 401147,China)
Abstract:A method was established to determine pyridine,tetraethyl lead,turpentine oil and acrylonitrile in water by purge and trap coupled with gas chromatography/mass spectrometry.The purge and trap condition were optimized.Results showed that pH value for 6 ~10 and purge time 11 min has good efficiency for purge and trap.The calibration curve was made by auto sampler,with correlation coefficient between 0.996~0.999 9,detection limits 0.06~1.0 μg/L and RSD of the method 1.1%~6.2%,the method was applied to the analysis in surface water and domestic sewage and industrial wastewater.Average recovery of the samples was 86.8%~112.1% in surface water,91.9%~99% in domestic sewage and 82.2%~104.3% in industrial wastewater respectively.The method which has good accuracy can be used for determination of pyridine,acrylonitrile,tetraethyl lead and turpentine in surface water,sewage and wastewater.
Keywords:pyridine  acrylonitrile  tetraethyl lead  turpentine oil  purge and trap  gas chromatography/mass spectrometry
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