滁州市酸雨化学组成特征及防治措施分析
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摘要
对滁州市2006~2009年降水的化学组成特征进行了连续4年的监测。监测结果表明,滁州市2008年和2009年降水为酸性降水,其pH值分别为5.09和5.06,酸雨频率分别为10.4%和31.6%;其酸性降水季节变化较为明显,秋、冬两季较高,夏季次之,降水中SO42-/NO3-的比值范围0.50~1.42,呈上升趋势,表明滁州市酸雨类型正逐步由硫酸、硝酸并重型向硫酸型转变;降水中Ca2+、Mg2+浓度逐年增大,Ca2+、Mg2+对降水酸性的中和作用逐年提高。结合滁州市实际情况,提出了切实可行的防治措施和建议。
The chemical characteristic of precipitation in Chuzhou City have been monitored four years continuously.The results showed that Acid rain happened in 2008 and 2009.The pH values varied from 5.09 to 5.06,and the frequency of acid rain varied from 10.4% to 31.6%.Seasonal variation of precipitation acidity was obvious in Chuzhou City,high in autumn and winter,low in summer.The SO2-4/ NO-3 ratios varied from 0.50 to 1.42 with a rising tend,which suggested the type the acid rain of Chuzhou City varied sulfuric and nitric acid type to sulfuric acid type.The concentration of Ca2+ and Mg2+ tended to rise year and year,which neutralized the acidity of rainwater.At last,this article gave a series of preventive countermeasures.
The chemical characteristic of precipitation in Chuzhou City have been monitored four years continuously.The results showed that Acid rain happened in 2008 and 2009.The pH values varied from 5.09 to 5.06,and the frequency of acid rain varied from 10.4% to 31.6%.Seasonal variation of precipitation acidity was obvious in Chuzhou City,high in autumn and winter,low in summer.The SO2-4/ NO-3 ratios varied from 0.50 to 1.42 with a rising tend,which suggested the type the acid rain of Chuzhou City varied sulfuric and nitric acid type to sulfuric acid type.The concentration of Ca2+ and Mg2+ tended to rise year and year,which neutralized the acidity of rainwater.At last,this article gave a series of preventive countermeasures.
引文
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[2]范元中.江苏省酸雨污染十五年趋势分析[J].环境科学与技术,2005,28(增刊):53-54.
[3]张晓勇,王振红.当前酸雨形势和治理对策[J].环境科学与管理,2007,32(8):85-88.
[4]吴威.安徽省酸雨普查成果浅析[J].绿色视野,2007,2(13):36-37.
[5]吴红颜,濮梅娟,商兆堂,等.江苏省2006年酸雨分布特征及其与气象条件的关系分析[J].气象科学,2008,28(5):563-567.
[6]张国宏,郑有飞,谈建国,等.上海市大气降尘污染的地面气象背景特征[J].南京气象学院学报,2007,30(6):875-880.
[7]郑美琴,卢振礼.日照市区PM10污染物特征及其与气象要素的关系[J].南京气象学院学报,2006,29(3):413-417.
[8]金腊华.广州地区酸雨特征及其对植物的影响研究[J].城市环境与城市生态,2002,15(6):11-13.
[9]堵小东,孙燕.常州市酸雨的特点及对策研究[J].甘肃环境研究与监测,2003,16(2):130-131.
[10]杨乐苏,周光益,于彬,等.广州市酸雨成分及其相关分析[J].生态科学,2005,25(3):254-257.
目录