| 吹扫捕集-气相色谱联用同时测定水中致嗅挥发性有机硫化物 |
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| 引用本文： | 刘洋,韩璐,宋永会,弓爱君,俞博凡.吹扫捕集-气相色谱联用同时测定水中致嗅挥发性有机硫化物[J].中国环境监测,2014,30(1):144-149. |
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| 作者姓名： | 刘洋 韩璐 宋永会 弓爱君 俞博凡 |
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| 作者单位： | 中国环境科学研究院, 环境基准与风险评估国家重点实验室, 北京 100012;中国环境科学研究院, 城市水环境科技创新基地, 北京 100012;北京科技大学化学与生物工程学院, 北京 100083;中国环境科学研究院, 环境基准与风险评估国家重点实验室, 北京 100012;中国环境科学研究院, 城市水环境科技创新基地, 北京 100012;中国环境科学研究院, 环境基准与风险评估国家重点实验室, 北京 100012;中国环境科学研究院, 城市水环境科技创新基地, 北京 100012;北京科技大学化学与生物工程学院, 北京 100083;中国环境科学研究院, 环境基准与风险评估国家重点实验室, 北京 100012;中国环境科学研究院, 城市水环境科技创新基地, 北京 100012 |
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| 基金项目： | 中国环境科学研究院中央级公益性科研院所基本科研业务专项（2011YSKY-11） |
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| 摘 要： | 建立了一种利用吹扫捕集(PT)-气相色谱(GC)/火焰光度检测器(FPD)同时测定水中16种致嗅类有机硫化物的分析方法。研究并优化了捕集阱类型、吹扫温度、吹扫时间,解吸温度以及解吸时间对PT的影响。实验表明:大部分硫醚类和硫醇类化合物分别在1~100 ng/L和3~300 ng/L范围内线性良好,线性相关系数大于0.99;相对标准偏差小于9.47%(n=6);加标回收率为81.68%~115.18%。定量下限(10倍信噪比)范围从0.19 ng/L(二乙基二硫醚)到2.67 ng/L(2-甲基-1-丙硫醇)。采用此方法对北京市3条河流水样进行了检测,除1-丙基二硫醚和2-甲基-2-丙硫醇外,其他14种有机硫化物都有检出,质量浓度为1.95~1 282.35 ng/L。
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| 关 键 词： | 挥发性有机硫化物 吹扫捕集 气相色谱 同时检测 水 |
| 收稿时间： | 2012/11/27 0:00:00 |
| 修稿时间： | 2013/1/25 0:00:00 |
Simultaneous Determination of 16 Odor Volatile Organic Sulfur Compounds in Water Sample by Purge and Trap-Gas Chromatography |
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| LIU Yang,HAN Lu,SONG Yong-hui,GONG Ai-jun and YU Bo-fan.Simultaneous Determination of 16 Odor Volatile Organic Sulfur Compounds in Water Sample by Purge and Trap-Gas Chromatography[J].Environmental Monitoring in China,2014,30(1):144-149. |
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| Authors: | LIU Yang HAN Lu SONG Yong-hui GONG Ai-jun and YU Bo-fan |
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| Institution: | Chinese Research Academy of Environmental Sciences, State Key Laboratory of Environmental Criteria and Risk Assessment, Beijing 100012, China;Chinese Research Academy of Environmental Sciences, Department of Urban Water Environmental Research, Beijing 100012, China;School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, China;Chinese Research Academy of Environmental Sciences, State Key Laboratory of Environmental Criteria and Risk Assessment, Beijing 100012, China;Chinese Research Academy of Environmental Sciences, Department of Urban Water Environmental Research, Beijing 100012, China;Chinese Research Academy of Environmental Sciences, State Key Laboratory of Environmental Criteria and Risk Assessment, Beijing 100012, China;Chinese Research Academy of Environmental Sciences, Department of Urban Water Environmental Research, Beijing 100012, China;School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, China;Chinese Research Academy of Environmental Sciences, State Key Laboratory of Environmental Criteria and Risk Assessment, Beijing 100012, China;Chinese Research Academy of Environmental Sciences, Department of Urban Water Environmental Research, Beijing 100012, China |
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| Abstract: | A method for simultaneous determination of 16 odor volatile organic sulfur compounds (VOSC) in water sample was developed with purge and trap (P&T), followed by gas chromatography (GC)-flame photometric detector (FPD). The various parameters including trap type, purge temperature, purge time, desorb temperature and desorb time, were investigated for optimization of P&T performance. The experimental results showed that the linear dynamic ranges were 1-100 ng/L and 3-300 g/L for sulfides and thiols respectively, with correlation coefficients greater than 0.99. The relative standard deviation (RSD) were all below 9.47% (n=6). The detection limits (10 S/N) ranged from 0.19 ng/L for diethyl disulfide (DEDS) to 2.67 ng/L for 2-methy-2-propanethiol (2-Me-2-PrSH). The method was applied to the determination of VOSC in three rivers around Beijing. Except 1-propyl disulfide (1-PrDS) and 2-methyl-2-propanethiol (2-Me-2-PrSH), other 14 kinds of organic sulfides were detected, with the concentration range from 1.95 to 1 282.35 ng/L. |
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| Keywords: | volatile organic sulfur compounds purge and trap chromatography simultaneous determination water |
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