摘要
根据某工业区1998年-2007年的降水监测资料,利用统计方法对该地区的酸雨污染变化规律、化学组成进行分析,结果表明:该工业区近十年来酸雨频率逐年上升,酸雨污染日趋严重,目前已成为重酸雨区;化学组成的分析表明该工业区的酸雨逐步由硫酸型转化为硫酸型和硝酸型并重;该工业区降水酸度与Cl-、NO3-、SO42-的灰色关联度最大,说明该工业区受海洋、交通以及工业排放的影响较大,海洋源、交通源、工业源对该工业区降水的酸度有重要影响。
Based on the local rain monitoring data from 1998 -2007, the variation of acidity and chemical compositions of rainwater in an industrial area was analyzed. The result showed that the annual average value of rain frequency increased in these years, and this area has became serious acid rain area from acid rain area. Analysis of ion concentration and composition also showed that the rain type in this area has changed from sulfuric acid to a complex type of sulfuric and nitric acid rain. Grey correlation analysis indicated that Cl^- , NO3^-, SO4^2- are the most important ions correlated to the rain acidity, and the acidity of precipitation is mainly influenced by the ocean, industrial and traffic pollution.
出处
《环境科学与管理》
CAS
2009年第7期42-46,共5页
Environmental Science and Management
关键词
降水
酸雨
灰色关联度
工业区
precipitation
acid rain
correlation analysis
industrial area
