在线气相色谱-质谱联用技术在定性定量监测水中挥发性有机物的应用

钟声<sup>1; 2</sup>; 崔嘉宇<sup>3</sup>

引用本文:	钟声，崔嘉宇.在线气相色谱-质谱联用技术在定性定量监测水中挥发性有机物的应用[J].环境监控与预警,2018,10(1):22-25
	ZHONG Sheng， CUI Jia yu.Study on Application of On line GC MS in Determining Volatile Organic Compounds in Surface Water[J].Environmental Monitoring and Forewarning,2018,10(1):22-25

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在线气相色谱-质谱联用技术在定性定量监测水中挥发性有机物的应用
钟声，崔嘉宇^1,2,3
1.国家环境保护地表水环境有机污染物监测分析重点实验室，江苏南京 210036;2.江苏省环境监测中心，江苏南京 210036;3.江苏省苏协环境技术研究院，江苏南京 210036

摘要:

通过将动态吹扫捕集气相色谱-质谱联用技术在线化，实现了全自动在线测定地表水中的54种挥发性有机物（VOCs），并能对其他VOCs进行定性半定量监测。54种VOCs的方法检出限为0.05～0.74 μg/L，在0～10 μg/L范围内线性良好；加标回收率为69.6%～107.2%；除1,2,4-三氯苯等5种VOCs外，其余49种VOCs的测定标准偏差均＜10%。该方法检出限、线性、准确度和精密度都能满足水质自动监测的需要。

关键词: 挥发性有机物自动监测气相色谱-质谱联用法

DOI：

分类号:O657.7⁺¹;X832

文献标识码:B

基金项目:江苏省环保科研课题资助项目（2014003）；江苏省环境监测基金资助项目（1305）；江苏省环境应急中心研究项目：典型突发环境污染事故应急监测方法及评价

Study on Application of On line GC MS in Determining Volatile Organic Compounds in Surface Water

ZHONG Sheng， CUI Jiayu^1,2,3

1.State Environmental Protection Key Laboratory of Monitoring and Analysis for Organic Pollutants in Surface Water, Nanjing, Jiangsu 210036, China;2.Jiangsu Environmental Monitoring Center, Nanjing, Jiangsu 210036, China;3.Jiangsu Suxie Institute of Environmental Technology, Nanjing , Jiangsu 210036, China

Abstract:

By taking purge and trap gas chromatography/mass spectrometry(P&T GC/MS)on line, it achieved fully automatic on line monitoring of 54 kinds of volatile organic compounds(VOCs) in surface water,and it can also qualitative and semi quantitative determine other unusual VOCs. The method detection limits for 54 kinds of VOCs were 0.05～0.74 μg/L and it showed good linear relationship within the concentration range of 0～10 μg/L. 49 kinds of VOCs’standard deviations were less than 10%, except for 5 kinds of compounds, such as 1,2,4 trichlorobenzene. The standard addition recoveries were 69.6%～107.2%. In all,it can meet the need of water automatic monitoring in terms of method detection limit, linear relationship, accuracy and precision.

Key words: VOC_s Automatic monitoring GC MS