| 顶空法测定海水中一氧化碳 |
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| 引用本文： | 陆小兰,杨桂朋,王晓蒙,王为磊,任春艳. 顶空法测定海水中一氧化碳[J]. 分析化学, 2010, 38(3). DOI: 10.3724/SP.J.1096.2010.00352 |
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| 作者姓名： | 陆小兰 杨桂朋 王晓蒙 王为磊 任春艳 |
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| 作者单位： | 1. 中国海洋大学化学化工学院,海洋化学与理论教育部重点实验室,青岛,266100
2. 中国海洋大学化学化工学院,海洋化学与理论教育部重点实验室,青岛,266100;青岛农业大学化学与药学院,青岛,266109 |
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| 基金项目： | 国家自然科学基金(Nos.40606023,40976043);;国家杰出青年科学基金(No.40525017);;山东省科技攻关项目(No.2006GG2205024);;山东省"泰山学者"建设工程专项经费资助 |
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| 摘 要： | 建立了顶空分析法结合ta3000痕量气体分析仪测定海水中CO浓度的方法,对实验条件进行了选择,确定了环境温度、平衡时间和液气相比等最佳实验条件。结果表明,在20℃的环境温度下采用50mL玻璃注射器进行测定,液气相比为44∶6和平衡时间为5min能够较好地测定出海水中CO的浓度。在优化实验条件下,CO测定的线性范围为0～2.7×10-6(V/V),r=0.999,P<0.0001;相对标准偏差<4.4%;回收率为90.5%;检出限为0.02nmol/L。同时应用该方法测定了北黄海海水中的CO,测得CO的浓度是0.20～3.13nmol/L,表明该方法能够满足于海水中CO浓度的测定。
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| 关 键 词： | 一氧化碳 海水 顶空分析法 |
Determination of Carbon Monoxide in Seawater by Headspace Analysis |
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| LU Xiao-Lan,YANG Gui-Peng,WANG Xiao-Meng,WANG Wei-Lei,REN Chun-Yan. Determination of Carbon Monoxide in Seawater by Headspace Analysis[J]. Chinese Journal of Analytical Chemistry, 2010, 38(3). DOI: 10.3724/SP.J.1096.2010.00352 |
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| Authors: | LU Xiao-Lan YANG Gui-Peng WANG Xiao-Meng WANG Wei-Lei REN Chun-Yan |
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| Affiliation: | Key Laboratory of Marine Chemistry Theory and Technology;Ministry of Education;College of Chemistry and Chemical Engineering;Ocean University of China;Qingdao 266100; College of Chemistry and Pharmacy;Qingdao Agricultural University;Qingdao 266109 |
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| Abstract: | Oceanic carbon monoxide( CO) has been of biogeochemical interest due to its significant role in global carbon cycle and the greenhouse effect. A headspace method coupled with ta3000 trace gas analyzer system for the determination of CO in seawater was developed. The effects of temperature,equilibrium time and water/gas volume ratio on the sensitivity of headspace analysis were studied in detail. The results showed that CO concentrations in seawater were measured successfully by the 50-mL glass-only syringes... |
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| Keywords: | Carbon monoxide Seawater Headspace analysis method |
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