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| 重庆市主城区降雨酸度的影响因子分析 | |
| 引用本文： | 陈克军,陈刚才,张卫东,孟小星,王定勇.重庆市主城区降雨酸度的影响因子分析[J].矿物岩石地球化学通报,2003,22(2):163-166. |
| 作者姓名： | 陈克军 陈刚才 张卫东 孟小星 王定勇 |
| 作者单位： | 1. 西南农业大学,资源环境学院,重庆,400716;重庆市环境科学研究院,大气所,重庆,400020 2. 重庆市环境科学研究院,大气所,重庆,400020;清华大学,环境科学与工程系,北京,100084 3. 重庆市环境科学研究院,大气所,重庆,400020 4. 西南农业大学,资源环境学院,重庆,400716 |
| 摘 要： | 重庆市是我国酸雨较严重的地区之一，其酸沉降状况具有代表意义。本分析了重庆市2000年和200l年的降雨指标(离子组分、pH、电导率)和空气质量指标(SO2和NO2)，降雨指标采用离子色谱法和电极法，空气质量指标采用紫外脉冲荧光法和化学发光法分析。结果表明，大气颗粒物、SO2及NO2对降水的酸度有不同影响。大气颗粒物中的碱式钙盐可明显降低雨水酸度，其可能来源为建筑施工；含有SO4^2-、NO3^-和NH4^ 的酸式盐可有效增加雨水酸度。大气中的SO2对降雨酸度增高贡献较大，而NO2贡献不明显。较小的NO3^-]/SO4^2-]值(0．125)显示重庆市的固定源的污染比流动污染源更强。 |
| 关 键 词： | 重庆 降雨酸度 降雨指标 pH 电导率 离子色谱法 电极法 空气质量指标 主城区 |
| 文章编号： | 1007-2802(2003)02-0163-04 |
| 修稿时间： | 2002年12月28 |
Affecting Factors on Precipitation Acidity in Chongqing City,China |
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| CHEN Ke-jun ,CHEN Gang-cai ,ZHANG Wei-dong ,MENG Xiao-xing ,WANG Ding-yong . College of Res. Environm.,Southwest Agric. University,Chongqing ,China, . Chongqing Research Academy of Environmental Science,Chongqing ,China, . College of Environmental Engineering,TsingHua University,Beijing ,China.Affecting Factors on Precipitation Acidity in Chongqing City,China[J].Bulletin of Mineralogy Petrology and Geochemistry,2003,22(2):163-166. | |
| Authors: | CHEN Ke-jun CHEN Gang-cai ZHANG Wei-dong MENG Xiao-xing WANG Ding-yong College of Res Environm Southwest Agric University Chongqing China Chongqing Research Academy of Environmental Science Chongqing China College of Environmental Engineering TsingHua University Beijing China |
| Institution: | CHEN Ke-jun 1,2,CHEN Gang-cai 2,3,ZHANG Wei-dong 2,MENG Xiao-xing 2,WANG Ding-yong 1 1. College of Res. Environm.,Southwest Agric. University,Chongqing 400716,China, 2. Chongqing Research Academy of Environmental Science,Chongqing 400020,China, 3. College of Environmental Engineering,TsingHua University,Beijing 100084,China |
| Abstract: | Chongqing is one of the more serious regions of acid rain, so the acid precipitations are representative. The rain samples were measured by ion chromatography (IC) and electrode during Jan.2000-dec.2001.At the same time, SO 2 and NO 2 were measured by ultraviolet impulse fluorescence and chemical radiation,respectively.Results show that air particulates , SO 2, and NO 2 had different effects on acidity of rain. Alkaline calcium compounds in air particles could course significant decrease in the rain acidity. SO 2 had an important contribution to increasing acidity of rain.The low-mass ratios of NO - 3]/SO 2- 4] were ascribed to the predominance of stationary source emissions over mobile source emissions . |
| Keywords: | acidity of rain pH effect factors |
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