峨眉山地区大气中的硝酸和氨

Nitrie Acid and Ammonia in the Air of the Emei Mountain area, Sichuan Province

为了研究峨眉山地区降水、云雾水明显酸化的原因,1985年10月我们进行了集中观测,并就其测定结果进行分析研究。

HNO3(g) and NH3(g) in the air have been measured in four different heights at the Emci Mountain area in October of 1985. The data analysis shows that vertical profiles of the concentrations of HNO3 and NH3 increased in a factor of e as the heights dropped a distance of 780 mand 1000 m respectively. During that time the equilibrium between NH4NO3 (s) and HNO3(g), NH3(g) didn't exist. Quite good correlation has been obtained between HNO3(g) and O3 in the air. Calaulations suggest that maximum contributions of H+ and NO3- caused by HNO3(g) in fog water at the mountaintop are 11% and 8% respectively.