Rasmussen R A, Khalil M A, Dalluge R W
Science. 1981 Jan 16;211(4479):285-7. doi: 10.1126/science.211.4479.285.
Trace gases have been measured, by electron-capture gas chromatography and gas chromatography-mass spectrometry techniques, at the South Pole (SP) in Antarctica and in the U.S. Pacific Northwest (PNW) ( approximately 45 degrees N) during January of each year from 1975 to 1980. These measurements show that the concentrations of CCl(3)F, CCl(2)F(2), and CH(3)CCl(3) have increased exponentially at substantial rates. The concentration of CCl(3)F increased at 12 percent per year at the SP and at 8 percent per year in the PNW; CCl(2)F(2) increased at about 9 percent per year at both locations, and CH(3)CCl(3) increased at 17 percent per year at the SP and 11.6 percent per year at the PNW site. There is some evidence that CCl(4) ( approximately 3 percent per year) and N(2)O (0.1 to 0.5 percent per year) may also have increased. Concentrations of nine other trace gases of importance in atmospheric chemistry are also being measured at these two locations. Results of the measurements of CHClF(2)(F-22), C(2)Cl(3)F(3)(F-113), SF(6), C(2)-hydrocarbons, and CH(3)Cl are reported here.
从1975年到1980年，每年1月都采用电子捕获气相色谱法和气相色谱 - 质谱技术，在南极洲的南极点（SP）以及美国太平洋西北部（PNW）（北纬约45度）对痕量气体进行了测量。这些测量结果表明，三氯氟甲烷（CCl₃F）、二氯二氟甲烷（CCl₂F₂）和甲基氯仿（CH₃CCl₃）的浓度以相当大的速率呈指数增长。三氯氟甲烷在南极点的浓度每年增长12%，在太平洋西北部每年增长8%；二氯二氟甲烷在两个地点每年增长约9%，甲基氯仿在南极点每年增长17%，在太平洋西北部地点每年增长11.6%。有一些证据表明，四氯化碳（每年约3%）和一氧化二氮（每年0.1%至0.5%）也可能有所增加。在这两个地点还对大气化学中其他九种重要的痕量气体浓度进行了测量。本文报告了二氟一氯甲烷（F - 22）、三氯三氟乙烷（F - 113）、六氟化硫（SF₆）、C₂ -烃类和甲基氯（CH₃Cl）的测量结果。
