Development of precise determination method of N_2/O_2/Ar ratios for the airsea gas exchange

海气交换N_2/O_2/Ar比值精确测定方法的建立

• 批准号: 11554022
• 负责人: TSUNOGAI Shizuo
• 金额: $ 8.96万
• 依托单位: HOKKAIDO UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B).
• 财政年份: 1999
• 资助国家: 日本
• 起止时间: 1999 至 2000
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-11554022/
• 关键词: Dissolved gases; Nitrogen; Oxygen; Argon; Seawater; Biogeochemical cycling; Gaschromatograph; Air-sea gas exchange; 窒素(海水中溶存); アルゴン(海水中溶存); 溶存酸素(海水中); 気体交換(海面での); 生物活動(海洋での); 気泡; 二酸化炭素問題; 海洋環境変化; 気体交換速度; 海洋二酸化炭素; 界面気体交換; 大気二酸化炭素; 海水中溶存

The N_2/Ar ratio as well as O_2/N_2 ratio is a good tool for the studies on the air-sea gas exchange and the biogeochemical cycles if the gas contents are precisely and easily determined. We have developed the method using a gaschromatograph. The precision was better than ±0.3% and the accuracy(the deviation of our standard gas)was around 0.05%. The method was applied to determine the gases in the northern North Pacific. The gases, N_2 and Ar were oversaturated by a few percent in the surface water.

N_2/Ar比和O_2/N_2比是研究海气交换和生物地球化学循环的一个很好的工具，如果气体含量可以精确而容易地测定。我们用气相色谱仪开发了这种方法。精密度优于±0.3%，准确度（标准气体偏差）在0.05%左右。该方法被用于测定北太平洋北部的气体含量。氮气和氩气在地表水中过饱和了几个百分点。

项目成果

N.Nakayama,S.Watanabe and S.Tsunogai: "Difference in O_2 and CO_2 gas transfer velocities in Funka Bay."Mar.Chem.. 72. 115-129 (2000)

N.Nakayama、S.Watanabe 和 S.Tsunogai：“Funka 湾 O_2 和 CO_2 气体传输速度的差异。”Mar.Chem.. 72. 115-129 (2000)

N.Nakayama, S.Watanabe and S.Tsunogai: "Difference in O_2 and CO_2 gas transfer velocities in Funka Bay."Marine Chemistry. 72. 115-129 (2000)

N.Nakayama、S.Watanabe 和 S.Tsunogai：“Funka 湾 O_2 和 CO_2 气体传输速度的差异。”海洋化学。