用气相色谱精确测定大气中的CO_2

Using Gas Chromatography to Calculate the Amount of CO_2 in the Atmosphere

在常温常压下，利用汞压进样装置控制进样速度，降低气体样品在定量管中的压力波动，达到了精确测定的目的。测试精度达１０^（－６）．

To reach higher precision is of critical importance in the application of gas chromatography to determine the amount of CO_2 in the atmosphere. As described in this paper, the velocity at which the gas sample is introduced is controlled using an Hg pressed intrument under normal temperature and pressure. The fluctuation in the pressure of the gas samples in the quantitative tube is decreased as well. As a consequence, the determination of the quantity of CO_2 is achieved to an accuracy of 10^(-6).