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太湖西苕溪流域地表水、地下水硝酸盐污染特征及来源

黄剑锋 张依章 张远 吴攀 王志强

黄剑锋, 张依章, 张远, 吴攀, 王志强. 太湖西苕溪流域地表水、地下水硝酸盐污染特征及来源[J]. 环境科学研究, 2012, 25(11): 1229-1235.
引用本文: 黄剑锋, 张依章, 张远, 吴攀, 王志强. 太湖西苕溪流域地表水、地下水硝酸盐污染特征及来源[J]. 环境科学研究, 2012, 25(11): 1229-1235.
HUANG Jian-feng, ZHANG Yi-zhang, ZHANG Yuan, WU Pan, WANG Zhi-qiang. Characteristics and Potential Sources of Nitrate Pollution in Surface and Ground Water in Xitiaoxi River, Taihu Lake Basin[J]. Research of Environmental Sciences, 2012, 25(11): 1229-1235.
Citation: HUANG Jian-feng, ZHANG Yi-zhang, ZHANG Yuan, WU Pan, WANG Zhi-qiang. Characteristics and Potential Sources of Nitrate Pollution in Surface and Ground Water in Xitiaoxi River, Taihu Lake Basin[J]. Research of Environmental Sciences, 2012, 25(11): 1229-1235.

太湖西苕溪流域地表水、地下水硝酸盐污染特征及来源

基金项目: 国家自然科学基金项目(41203081);国家重点基础研究发展计划(973)项目(2008CB418201);中央级公益性科研院所基本科研业务专项(GYK1291101)

Characteristics and Potential Sources of Nitrate Pollution in Surface and Ground Water in Xitiaoxi River, Taihu Lake Basin

  • 摘要: 为探寻西苕溪流域地下水中NO3--N的污染来源,对西苕溪流域地表水、地下水体的NO3--N污染状况进行了调查,并结合水化学与NO3--N同位素对其来源进行解析. 结果显示,西苕溪流域地表水的ρ(NO3--N)为1.07~3.45 mg/L,ρ(NO2--N)为0.15~0.35 mg/L;地下水中ρ(NO3--N)为3.24~15.31 mg/L,平均值达9.26 mg/L. 下游地区地下水的ρ(NO2--N)较高(0.26~4.25 mg/L),平均值达3.00 mg/L. ρ(NO3-)与ρ(Cl-)的关系显示,西苕溪地表水、地下水存在比较稳定的NO3--N输入来源. NO3--N同位素分析结果显示,地表水的δ15N为7.0‰~16.7‰,说明上游NO3--N主要来源于土壤有机氮的矿化,中下游则主要受到农业施用化肥与人类生活污水二者的共同影响;地下水的δ15N为14.3‰~27.1‰,说明调查区域内的地下水受人畜粪便和生活污水的影响可能更为强烈,另外,地下水中存在的反硝化作用也是造成地下水δ15N增高的原因.

     

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出版历程
  • 收稿日期:  2012-07-24
  • 修回日期:  2012-09-13
  • 刊出日期:  2012-11-25

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