大气中二甲基硫在线监测技术研发

黄昆; 曾立民; 于雪娜; 胡敏

doi:10.7524/j.issn.0254-6108.2013.11.021

环境化学

大气中二甲基硫在线监测技术研发

, , ,

黄昆, 曾立民, 于雪娜, 胡敏. 大气中二甲基硫在线监测技术研发[J]. 环境化学, 2013, 32(11): 2162-2169. doi: 10.7524/j.issn.0254-6108.2013.11.021

引用本文:

黄昆, 曾立民, 于雪娜, 胡敏. 大气中二甲基硫在线监测技术研发[J]. 环境化学, 2013, 32(11): 2162-2169. doi: 10.7524/j.issn.0254-6108.2013.11.021

HUANG Kun, ZENG Limin, YU Xuena, HU Min. Online monitoring technique for Dimethyl Sulfide in the atmosphere[J]. Environmental Chemistry, 2013, 32(11): 2162-2169. doi: 10.7524/j.issn.0254-6108.2013.11.021

Citation:

HUANG Kun, ZENG Limin, YU Xuena, HU Min. Online monitoring technique for Dimethyl Sulfide in the atmosphere[J]. Environmental Chemistry, 2013, 32(11): 2162-2169. doi: 10.7524/j.issn.0254-6108.2013.11.021

大气中二甲基硫在线监测技术研发

1.
北京大学环境科学与工程学院, 环境模拟与污染控制国家重点联合实验室, 北京, 100871;
2.
武汉市天虹仪表有限责任公司, 武汉, 430223
基金项目:
国家重大科学仪器专项(2012YQ060027)；成渝地区大气灰霾特征与控制途径研究(201009001)；东亚地区大气污染物跨界输送及其相互影响与应对策略研究(201009002)资助。

Online monitoring technique for Dimethyl Sulfide in the atmosphere

1.
State Joint Key Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing, 100871, China;
2.
Wuhan Tianhong instruments Ltd, Wuhan, 430223, China
Fund Project:

摘要: 本研究研发出一种新型的大气二甲基硫在线监测及标定技术，采用低温捕集-热解析装置采样及气相色谱-火焰光度检测器(FPD)检测分析.环境大气样品经-20℃除水后，以60 mL·min-1的流速在-100℃下被空石英毛细管捕集15 min，然后在90℃下解析进入气相色谱分析，采用对含硫化合物具有很好选择性的FPD检测.该系统时间分辨率为30 min，最低检出限为8.4 ng·m-3，回收率为93.4%—95.9%(n=6)，精密度为1.5%(n=6)，可检测浓度范围为103.经过10 d(2013年1月5日至1月14日)的连续观测表明：北京城市冬季大气中二甲基硫的浓度平均值为20.4 ng·m-3，且夜间浓度高于白天，燃烧源可能是北京冬季城市大气二甲基硫的来源之一.
- 二甲基硫 /
- 低温捕集 /
- 在线监测 /
- 燃烧源
Abstract: A new online dimethylsulfide(DMS) measurement technique was developed with a combination of cryo-trapping-thermal desorption and GC-FPD (Gas Chromatography-Flame Photometric Detector), which can be used for both atmospheric monitoring and calibration. Samples were deprived of air water at a low temperature (-20℃), trapped into a hollow quartz capillary (-100℃) at a flow rate of 60 mL·min-1 during 15 minutes, and then desorbed at 90℃. Finally the sample was detected by GC-FPD for sulfur containing compounds. This system showed good performance with low detection limit of 8.4 ng·m-3 and recovery rates of about 93.4%—95.9% (RSD=1.5%,n=6). Continuous measurement of DMS from January 5th to 14th 2013 in Beijing was executed with the mean concentration of 20.4 ng·m-3. The nighttime concentration was higher than daytimes, which might be attributed to the combustion sources during the heating period of Beijing.
- dimethylsulfide /
- cryo-trapping /
- online monitoring /
- combustion source

[1]	Watts S F. The mass budgets of carbonyl sulfide, dimethyl sulfide, carbon disulfide and hydrogen sulfide[J]. Atmospheric Environment, 2000,34:761-779
[2]	Schfer H, Myronova N, Boden R. Microbial degradation of dimethylsulfide and related C1-sulfur compounds: Organisms and pathways controlling fluxes of sulfur in the biosphere[J]. Journal of Experimental Botany, 2010,61: 315-334
[3]	Bates T S, Lamb B K, Guenther A, et al. Sulfur emissions to the atmosphere from natural sources[J]. Journal of Atmospheric Chemistry,1992,14: 315-337
[4]	Gaston C J, Pratt K A, Qin X Y,et al. Real-time detection and mixing state20 of methanesulfonate in single particles at an inland urban location during a phytoplankton bloom[J]. Environmental Science Technology, 2010,44: 1566-1572
[5]	Bardouki H, Berresheim H, Vrekoussis M,et al. Gaseous (DMS, MSA,SO₂, H₂SO₄ and DMSO) and particulate(sulfate and methanesulfonate) sulfur species over the northeastern coast of Crete[J]. Journal of Physical Chemistry -US, 2003, 3:1871-1886
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[8]	马奇菊, 胡敏, 田旭东,等, 青岛近岸海域二甲基硫排放和大气中二甲基硫浓度变化[J].环境科学, 2004, 25(1):20-24
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黄昆, 曾立民, 于雪娜, 胡敏. 大气中二甲基硫在线监测技术研发[J]. 环境化学, 2013, 32(11): 2162-2169. doi: 10.7524/j.issn.0254-6108.2013.11.021

引用本文:

黄昆, 曾立民, 于雪娜, 胡敏. 大气中二甲基硫在线监测技术研发[J]. 环境化学, 2013, 32(11): 2162-2169. doi: 10.7524/j.issn.0254-6108.2013.11.021

Citation:

大气中二甲基硫在线监测技术研发

1. 北京大学环境科学与工程学院, 环境模拟与污染控制国家重点联合实验室, 北京, 100871;
2. 武汉市天虹仪表有限责任公司, 武汉, 430223

收稿日期: 2013-01-31

基金项目:

国家重大科学仪器专项(2012YQ060027)；成渝地区大气灰霾特征与控制途径研究(201009001)；东亚地区大气污染物跨界输送及其相互影响与应对策略研究(201009002)资助。

关键词:

摘要: 本研究研发出一种新型的大气二甲基硫在线监测及标定技术，采用低温捕集-热解析装置采样及气相色谱-火焰光度检测器(FPD)检测分析.环境大气样品经-20℃除水后，以60 mL·min-1的流速在-100℃下被空石英毛细管捕集15 min，然后在90℃下解析进入气相色谱分析，采用对含硫化合物具有很好选择性的FPD检测.该系统时间分辨率为30 min，最低检出限为8.4 ng·m-3，回收率为93.4%—95.9%(n=6)，精密度为1.5%(n=6)，可检测浓度范围为103.经过10 d(2013年1月5日至1月14日)的连续观测表明：北京城市冬季大气中二甲基硫的浓度平均值为20.4 ng·m-3，且夜间浓度高于白天，燃烧源可能是北京冬季城市大气二甲基硫的来源之一.

English Abstract

Online monitoring technique for Dimethyl Sulfide in the atmosphere

1. State Joint Key Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing, 100871, China;
2. Wuhan Tianhong instruments Ltd, Wuhan, 430223, China

Received Date: 2013-01-31

Fund Project:

Keywords:

Abstract: A new online dimethylsulfide(DMS) measurement technique was developed with a combination of cryo-trapping-thermal desorption and GC-FPD (Gas Chromatography-Flame Photometric Detector), which can be used for both atmospheric monitoring and calibration. Samples were deprived of air water at a low temperature (-20℃), trapped into a hollow quartz capillary (-100℃) at a flow rate of 60 mL·min-1 during 15 minutes, and then desorbed at 90℃. Finally the sample was detected by GC-FPD for sulfur containing compounds. This system showed good performance with low detection limit of 8.4 ng·m-3 and recovery rates of about 93.4%—95.9% (RSD=1.5%,n=6). Continuous measurement of DMS from January 5th to 14th 2013 in Beijing was executed with the mean concentration of 20.4 ng·m-3. The nighttime concentration was higher than daytimes, which might be attributed to the combustion sources during the heating period of Beijing.

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大气中二甲基硫在线监测技术研发

Online monitoring technique for Dimethyl Sulfide in the atmosphere

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大气中二甲基硫在线监测技术研发

English Abstract

Online monitoring technique for Dimethyl Sulfide in the atmosphere

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