金佛山地区地下水硝态氮污染时空变异性研究

根据1976~1977年、2004~2006年和2009年金佛山地区23处地下水排泄点水中硝态氮的质量浓度,采用地球化学、统计学与GIS相结合的方法确定了区内地下水中硝态氮的地球化学背景值,分析了硝态氮污染的时空变异特征.结果表明,区内地下水中硝态氮的地球化学背景值为0.72~2.00 mg.L-1,正异常下限为3.20 mg.L-1;2004~2006年和2009年金佛山自然保护区内地下水硝态氮平均质量浓度为:2.08、2.67、2.59和3.92 mg.L-1;保护区外为:39.08、25.46、17.99和13.73mg.L-1;平均超标率(标准规定NO 3--N≤10 mg.L-1)为...

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Bibliographic details
Volume: 32
Main Author: 伍坤宇 王鹏 沈立成 肖琼
Format: Journal Article
Language: Chinese
Place of publication: 2011
published in: Huanjing kexue Vol. 32; no. 11; pp. 3247 - 3254
Data of publication: 2011
ISSN: 0250-3301
Alternate Title: Spatial and Temporal Variability of Nitrate Contaminant in Groundwater in Jinfo Mt.Area,Chongqing,China
Discipline: Engineering
Bibliography: 11-1895/X
WU Kun-yu,WANG Peng,SHEN Li-cheng,XIAO Qiong(Key Laboratory of Eco-environments in Three Gorges Reservoir Region,Ministry of Education,School of Geographical Science,Southwest University,Chongqing 400715,China)
nitrate contaminant; groundwater; spatial and temporal variability; environmental policy measures; Jinfo Mt.area
The geochemical background of nitrate in groundwater in Jinfo Mt.area was determined,and spatial and temporal variability of nitrate contaminant was analyzed using geochemical,statistical and GIS methods.Twenty-three samples were collected from groundwater discharge points in the study area during 1976-1977,2004-2006 and 2009,and mass concentration of nitrate in groundwater was tested.The results showed that the geochemical background of nitrate in groundwater in study area was in the range of 0.72-2.00 mg·L-1,and the threshold of anomaly was 3.20 mg·L-1.During 2004-2006 and 2009,the average values of nitrate concentration in groundwater in Jinfo Mt.natural reserve were 2.08,2.67,2.59
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