郑州市大气酸性物质与降水酸性的相关性分析  

The Correlation Between Acid Material in Atmosphere and Precipitation Acidity

作　　者：赵勇[1] 孙中党 王飞 赵永刚[1] 

机构地区：[1]河南农业大学环境系,河南郑州450002 [2]郑州市环境保护科研所,河南郑州450007

出　　处：《环境科学研究》2001年第6期20-23,共4页Research of Environmental Sciences

摘　　要：对郑州市 1991～ 1999年的降水进行了分析。结果表明 :①郑州市降水年均pH值都在 5 6以上 ,不属于酸雨区 ,但很多年份都出现过酸雨 ;②郑州市降水主要是硫酸型污染 ,降水pH值与大气中的SO2 有较强的相关性 ,降水pH值与其SO42 - 相关性不强 ;③降水中NO- 3 与大气中的NOx 也有较好的相关性 ,降水中SO42 - 与大气中的SO2The characteristic of precipitation during 1991～1999 in Zhengzhou was studied.The result indicated that ① The annually averaged pH value in Zhengzhou was above 5\^6 showing the occurrence of acid rain in many years in Zhengzhou although it does not belong to Acid Rain Area.② Vitriolic pollution is main form of precipitation in Zhengzhou.There is close correlation between pH value in precipitation and SO\-2 concentration in atmosphere,but not strong correlation between pH value and SO 4\+\{2-\} concentration in precipitation.③ There is also preferable correlation between NO\+-\-3 concentration in precipitation and NO\-x in atmosphere.

关 键 词：降水 大气污染 酸沉降 PH值 二氧化硫 郑州市 酸性物质 酸雨 相关性 

分 类 号：X517[环境科学与工程—环境工程]