| METHOD FOR IN SITU DETERMINATION OF Pco2 IN SEA-AIR EQUILIBRIUM SYSTEM |
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| 作者姓名： | 崔鹤 纪雷 王军 辛淑平 张龙军 陆贤昆 |
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| 作者单位： | [1]MarineChem.Dept.,OceanUniversityofQingdao,Qingdao266003,China [2]QingdaoInstituteofChemicalTechnology,Qingdao266042,China [3]FoodstuffLab.,ChinaEntry＆ExitInspection＆QuarantineBureau,Qingdao,Shandong,266002,China |
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| 基金项目： | Project4 92 762 58supportedbyNSFC . |
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| 摘 要： | The method for determining Pco2 in the atmosphere and water by using gas chroma-tography was studied. For determination of Pco2 in the atmosphere, a sampling method was developed in which the chromatograph was connected to a 6-port valve with a sampling pipe opening to the atmosphere, so gas pressure in the sampling pipe was identical to that of the atmoesphere. A semi-automatic seawater-atmosphere equilibrium system was designed to determine the Pco2 in seawater. The equilibrium chamber contained in situ seawater and the well-equilibrated gas was pushed into the sampling pipe by sample wa-ter, so pressure and temperature calibration could be avoided. This method has high accuracy for the de-termination of Pco2 in the air and seawater, and was used for in situ determination of Pco2 in the atmo-sphere and of the seawater sample in the JGOFS cruise in the East China Sea.
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| 关 键 词： | 平衡 二氧化碳 浓度 中国东海 大气 温室效应 |
Method forin situ determination ofP_{CO_2 } in sea-air equilibrium system |
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| He Cui,Lei Ji,Jun Wang,Shu-ping Xin,Long-jun Zhang,Xian-kun Lu.METHOD FOR IN SITU DETERMINATION OF Pco2 IN SEA-AIR EQUILIBRIUM SYSTEM[J].Chinese Journal of Oceanology and Limnology,2001,19(2):172-177. |
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| Authors: | He Cui Lei Ji Jun Wang Shu-ping Xin Long-jun Zhang Xian-kun Lu |
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| Institution: | (1) Marine Chem. Dept., Ocean University of Qingdao, 266003 Qingdao, China;(2) Qingdao Institute of Chemical Technology, 266042 Qingdao, China;(3) Present address: Foodstuff Lab., China Entry & Exit Inspection & Quarantine Bureau, 266002 Qingdao, Shandong, China |
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| Abstract: | The method for determining P CO 2 in the atmosphere and water by using gas chromatography was studied. For determination of P CO 2 in the atmosphere, a sampling method was developed in which the chromatograph was connected to a 6 port valve with a sampling pipe opening to the atmosphere, so gas pressure in the sampling pipe was identical to that of the atmosphere. A semi automatic seawater atmosphere equilibrium system was designed to determine the P CO 2 in seawater. The equilibrium chamber contained in situ seawater and the well equilibrated gas was pushed into the sampling pipe by sample water, so pressure and temperature calibration could be avoided. This method has high accuracy for the determination of P CO 2 in the air and seawater, and was used for in situ determination of P CO 2 in the atmosphere and of the seawater sample in the JGOFS cruise in the East China Sea. |
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| Keywords: | PCO 2 sea air equilibrium gas chromatography |
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