乌鲁木齐市2009年大气离子湿沉降通量变化特征分析

摘要

Analysing on the characteristics of the major ion wet deposition flux by using acid deposition monitoring data in Urumqi, the results show that wet deposition pollution is serious in Urumqi. The amount of sulfur wet deposition due to the local SO2 emissions,and the max value in April for 4. 56 g/m2, Extreme wet deposition fluxes of nitrogen in June for 1. 49 g/m2;and calcium in July for 6. 66 g/m2. The average amount of wet deposition of sulfur and calcium were 3. 09 and 3. 22 g/m2 respectively. They were 2.6 and 3. 4 times higher than that of the national average, respectively. Wet deposition of nitrogen volume is 0. 99 g/m2, slightly lower than that of the national average.%通过对乌鲁木齐市2009年酸沉降监测资料的分析,研究了主要离子湿沉降通量的变化特征.结果表明,乌鲁木齐市的湿沉降污染严重.硫湿沉降量主要源于本地SO2的排放,极值出现在4月份为4.56 g/m2,氮湿沉降通量的极值出现在6月为1.49 g/m2,钙湿沉降通量的极值出现在7月为6.66 g/m2,硫、钙湿沉降量均值分别为3.09,3.22 g/m2,分别是全国平均值的2.6和3.4倍,均高于其他省市.氮湿沉降量均值为0.99 g/m2,略低于全国平均值.