作者：邢利利, 李佳, 黄春, 刘子健, 高紧, 陈勇
作者单位：成都市环境监测中心站, 四川 成都 610072
关键词：吹扫捕集;捕集管;气相色谱-质谱法;挥发性有机物
摘要：
利用吹扫捕集/气相色谱-质谱法分析水中挥发性有机物，考察3种不同吸附剂组合对水中68种挥发性有机物的吸附和脱附性能。结果表明：由石墨化炭黑B、碳分子筛1000和碳分子筛1001混合吸附剂填充的捕集管对68种组分在较宽浓度范围内有较好的吸附和脱附性能，线性相关系数在0.992~0.999之间，且水分对其干扰较小。选用K管对实际水样进行3次平行测定和加标回收率分析，68种挥发性有机物的相对标准偏差在1.2%~5.3%之间，加标回收率在82%~119%之间，精密度和准确度均较好。
Preliminary exploration on the effects of different trap tubes for volatile organic compounds analysis in water
XING Lili, LI Jia, HUANG Chun, LIU Zijian, GAO Jin, CHEN Yong
Chengdu Environmental Monitoring Center, Chengdu 610072, China
Abstract: The adsorption and desorption properties of three different mixed adsorbents on 68 kinds of volatile organic compounds in water were investigated by purge trap/gas chromatography-mass spectrometry (GC-MS) .The results show that the adsorption and desorption properties of tubes filled with graphited carbon black B, carbon molecular sieve 1000 and carbon molecular sieve 1001 are better for the 68 kinds of volatile organic compounds in a wider range of concentration. The correlation coefficient of standard curve is between 0.992-0.999. In addition, the moisture interference is less than the other two trap tubes. Three parallel determinations and recoveries of standard addition are carried out on the actual water sample with K tube. The relative standard deviation of the 68 kinds of volatile organic compounds is between 1.2%-5.3% and the standard addition recoveries are in the range of 82%-119%. The precision and accuracy of both kinds of tests are good.
Keywords: purge and trap;trap tube;gas chromatography-mass spectrometry;volatile organic compounds
2018, 44(11): 29-35 收稿日期: 2018-05-24;收到修改稿日期: 2018-07-03
基金项目:
作者简介: 邢利利(1982-),女,河南濮阳市人,工程师,硕士,主要从事环境监测工作
参考文献
[1] 生活饮用水卫生标准:GB5749-2006[S]. 北京:中国标准出版社, 2006.
[2] 金银龙, 鄂学礼, 张岚.《生活饮用水卫生标准》释义[M].北京:中国标准出版社, 2007:51.
[3] 姜洋, 房丽萍, 杨刚, 等. 水体中挥发性有机物分析方法研究进展[J]. 环境化学, 2015, 34(9):1611-1617
[4] LEGRAND S, DUGAY J, VIAL J. Use of solid-phase microextraction coupled with gas chromatography for the determination of residual solvents in pharmaceutical products[J]. Journal of Chromatography A, 2003, 999(1):195-201
[5] 占美君, 赖永忠. 静态顶空-气相色谱/质谱法同时监测环境水体中59种挥发性有机物[J]. 分析测试技术与仪器, 2016, 22(4):250-260
[6] 秦明友, 张新申, 康莉, 等. 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, 36(1):93-96
[7] 冯丽, 李诚, 张彦, 等. 吹扫捕集/气相色谱-质谱法测定地下水中30种挥发性有机物[J]. 岩矿测试, 2012, 31(6):1037-1042
[8] CHARY N S, FERNANDEZ-ALBA A R. Determination of volatile organic compounds in drinking and environmental waters[J]. Trends in Analytical Chemistey, 2012, 32:60-75
[9] 张芹, 曾凡海, 王少青. 吹扫捕集/GC-MS法测定水中26种挥发性有机物[J]. 西南大学学报(自然科学版), 2013, 35(3):146-151
[10] 水质挥发性有机物的测定吹扫捕集/气相色谱-质谱法:HJ 639-2012[S]. 北京:中国环境科学出版社, 2012.
[11] 水质挥发性有机物的测定吹扫捕集/气相色谱法:HJ 686-2014[S]. 北京:中国环境科学出版社, 2014.
