Method forin situ determination of $$P_{CO_2 } $$ in sea-air equilibrium system

He Cui; Lei Ji; Jun Wang; Shu-ping Xin; Long-jun Zhang; Xian-kun Lu

doi:10.1007/BF02863043

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Method forin situ determination of $$P_{CO_2 } $$ in sea-air equilibrium system

OriginalPaper | Updated：2023-05-16

- Method forin situ determination of $$P_{CO_2 } $$ in sea-air equilibrium system
- Method forin situ determination of $$P_{CO_2 } $$ in sea-air equilibrium system
- 海洋湖沼学报（英文） 2001年19卷第2期页码：172-177
- Affiliations：
  
  1. Marine Chem. Dept. Ocean University of Qingdao
  2. Qingdao Institute of Chemical Technology
- Author bio：
- Funds：
  
  Project 49276258 supported by NSFC.
- DOI：10.1007/BF02863043
  中图分类号：
- 纸质出版：2001
- Accepted：
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Method forin situ determination of $$P_{CO_2 } $$ in sea-air equilibrium system[J]. 海洋湖沼学报（英文）, 2001,19(2):172-177.

Cui, H., Ji, L., Wang, J. et al. Method forin situ determination of$P_{CO_2 } $ in sea-air equilibrium system., Chin. J. Ocean. Limnol. 19, 172–177 (2001). https://doi.org/10.1007/BF02863043
Method forin situ determination of $$P_{CO_2 } $$ in sea-air equilibrium system[J]. 海洋湖沼学报（英文）, 2001,19(2):172-177. DOI： 10.1007/BF02863043.

Cui, H., Ji, L., Wang, J. et al. Method forin situ determination of$P_{CO_2 } $ in sea-air equilibrium system., Chin. J. Ocean. Limnol. 19, 172–177 (2001). https://doi.org/10.1007/BF02863043 DOI：

摘要

Abstract

The method for determining $$P_{CO_2 } $$ in the atmosphere and water by using gas chromatography was studied. For detemination 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 seawateratmosphere 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 determmination 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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references

Copin-Morrtegut, C., 1985. A method for the continous determination of the partial pressure of carbon dioxide in the upper ocean,Marine Chem. 17: 13–21.

Goyet, C., Beauverger C., 1991. Distribution of carbon partial pressure in surface water of the Southwest Indian Ocean.Tellus 43B: 1–11.

Inoue, H., Sugimura, Y., 1988. Distribution and variations of ocean carbon dioxide in the Western North Pacific, Eastern Indian Ocean and Southern Ocean, South of Australia.Tellus 40B: 308–320.

Keeling, C. D., 1968. Carbon dioxide in suface ocean waters 4. Globe distribution.Journal of Geophys. Res. 73 (14): 4543–4553.

Murphy, P. P, Feely, R. A., Gammon, R. H., et al., 1991. Autumn air-sea disequibrium of CO2 in the South Pacific Ocean.Marine Chem. 35: 77–84.

Takahashi, T., 1961. Carbon dioxide in the atmosphere and in Atlantic Ocean water.Journal of Geophys. Res. 66: 477–494.

Weiss, R. F., Jahnke, R. A., Keeling, C. D., 1982. Seasonal effect of temperature and salinity on the partial pressure of CO2 in seawater.Nature 300(5892): 511–513.

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