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

Updated：2023-05-16

- Method forin situ determination of $$P_{CO_2 } $$ in sea-air equilibrium system
- Journal of Oceanology and Limnology Vol. 19, Issue 2, Pages: 172-177(2001)
- Affiliations：
  
  1. Marine Chem. Dept. Ocean University of Qingdao
  2. Qingdao Institute of Chemical Technology
- Author bio：
- Funds：
- DOI：10.1007/BF02863043
  CLC：
- Published：2001
- Accepted：
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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：

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

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