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青岛环境大气和海洋表层水中挥发性硫化物的测定 被引量:12

Determination of volatile sulfur compounds in the atmosphere and surface seawater in Qingdao
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摘要 建立了采用预浓缩和GC FPD测定环境大气和海洋表层水中挥发性硫化物(COS、DMS和CS2)的方法.该方法对气态COS、DMS和CS2的回收率分别为(95±4)%,(86±3)%和(91±6)%(n=5),精密度分别为4 75%,8 26%和7 55%(n=5).对水体中COS、DMS和CS2的回收率分别为(86±8)%,(80±6)%和(97±12)%(n=5),精密度分别为8 17%,5 59%和11 70%.COS、DMS和CS2检出限分别为33pg,387pg和22pg.采用该方法测定了青岛近岸海域大气和表层海水中COS、DMS和CS2的浓度.结果表明,COS是近岸海域大气中主要挥发性硫化物,DMS是表层海水中最主要的挥发性硫化物.3种挥发性硫化物的浓度有明显的季节差异,夏季浓度远高于冬季浓度. A method to determine the volatile sulfur compounds in the atmosphere and the surface seawater by pre-concentration and GC-FPD is established. The coveries of COS, DMS and CS_2 in gas samples are (95±4)%, (86±3)% and (91±6)% (n=5), respectively, and (86±8)%, (80±6)% and (97±12)% (n=5) in water samples. The precisions of COS, DMS and CS_2 are 4.75%,8.26% and 7.55% (n=5)in gaseous samples and 8.17%, 5.59% and 11.70% in water samples, respectively. The detection limits of COS, DMS and CS_2 are 33pg,387pg and 22pg, respectively. COS, DMS and CS_2 in the atmosphere and the surface seawater in Qingdao are measured with this method. It is observed that COS is the most abundant volatile sulfur compound in the atmosphere, while DMS is the most abundant in surface seawater. The concentrations of these three sulfur compounds show the evident seasonal variations with much greater values in summer than in winter.
出处 《环境科学学报》 CAS CSCD 北大核心 2005年第1期30-33,共4页 Acta Scientiae Circumstantiae
基金 国家自然科学基金(项目编号:20177002 20131160731) 高等学校博士学科点专项科研基金(项目编号:20020001043)
关键词 CS2 大气 COS 近岸海域 表层海水 DMS 挥发性硫化物 GC-FPD 预浓缩 浓度 volatile sulfur compound COS DMS CS_2
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  • 1Kittler P, Swan S, Ivey J. An indication oxidant scrubber for the measurement of atmospheric dimethylsulphide [J]. Atmospheric Environment, 1992, 26A (14): 2661-2664
  • 2Person C, Leek C. Determination of reduced sulfur compounds in the atmosphere using a cotton scrubber for oxidation removal and gas chromatography with flame photometric detection [ J ]. Analytical Chemistry, 1994, 66(7): 983-987
  • 3Yayoi I, Katsuji M, Yasuhiro M, et al. Simultaneous measurement of volatile sulfur compounds using ascorbic acid for oxidant removal and gas chromatography-flame photometric detection [ J] . Journal of Chromatography A, 1999,864( 1 ): 111- 119
  • 4Calogirou A, Duane M, Kotzias D, et al. Polyphenylenesulfide,noxon , an ozone scavenger for the analysis of oxygenated terpenes in air[J]. Atmospheric Environment, 1997, 31(17) :2741-2751
  • 5Johnson J E, Bates T S. Atmospheric measurements of earbonyl sulfide, dimethyl sulfide, and carbon disulfide using electron capture sulfur detector [ J ]. Journal of Geophysical Research, 1993, 98(D4): 23411-23421
  • 6Sciare J, Mihalopoulos N, Nguyen B C, et al, Spatial and temporal variability of dissolved sulfur compounds in European estuaries [ J ].Biogeochemistry, 2002,59( 1 ): 121- 141
  • 7Andreae M O. The ocean as a source of atmosphere sulfur compounds, in the role of air-sea exchange in geochemical cycling [M].Norwell, Mass, 1986:331-362
  • 8Wardencki W. Problems with the determination of environmental sulphur compounds by gas chromatography [J]. Journal of Chromatography A, 1998, 793(1):1-19
  • 9Adreae M O, Barnard W R, Ammons J M. The biological production of dimethy sulfide in the ocean and its role in the global atmospheric sulfur budget [J]. Ecology Bulletin, 1983, 35(1): 167-177
  • 10Bates T S, Johnson J E, Quinn P K, et al. The biogeochemical sulfur cycle in the marine boundary layer over the northeast Pacific Ocean [ J ]. Journal of Geophysics Research, 1990, 92 ( C3 ):13245- 13262

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