硫氧同位素示踪污染物来源在济南岩溶水中的应用
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摘要
近年来,济南岩溶水硫酸盐浓度逐年升高,为了对硫酸盐污染区域实施有效的防治措施,保障饮用水安全,识别硫酸盐的污染来源极其重要。在系统分析研究区水文地质条件的基础上,根据实际的采样测试数据,采用硫、氧(S、O)双同位素示踪技术,分析识别了济南趵突泉泉域硫酸盐的主要污染来源,并通过Iso Source质量守恒模型,估算了硫酸盐各污染来源的贡献率。结果表明:泉域内硫酸盐主要污染来源有大气沉降、污水和土壤;大气沉降来源贡献率最大,均值达到53. 9%;其次是污水来源,均值为31%;土壤来源贡献率最小,均值为15. 1%。该研究为北方岩溶区地下水硫酸盐来源的定量研究提供了一种新方法,为济南趵突泉泉域硫酸盐污染防治提供了科学依据。
In recent years,sulphate concentration of karst water in Jinan is increasing. In order to effectively prevent sulphate pollution and guarantee the safety of drinking water,it is very important to identify the source of sulphate pollution. Based on the systematic analysis of hydrogeological conditions in the study area,the authors identified the major sulphate pollution sources in Baotuquan spring area of Jinan by using sulfur and oxygen isotope technology according to the actual sampling data. The contribution rates of sulphate pollution sources were estimated by IsoSource mass conservation model. The results show that the major sulphate pollution sources were atmospheric sedimentation,sewage and soil. Among them,the contribution rate of atmospheric sedimentation source is the largest,with an average value of 53. 9%,followed by sewage source,with an average value of 31%,and the contribution rate of soil source is the smallest,with an average value of 15. 1%. This study provides a new method for the quantitative study of sulphate sources of groundwater in northern karst areas,and provides a scientific basis for the prevention and control of sulphate pollution in Baotuquan spring area of Jinan.
In recent years,sulphate concentration of karst water in Jinan is increasing. In order to effectively prevent sulphate pollution and guarantee the safety of drinking water,it is very important to identify the source of sulphate pollution. Based on the systematic analysis of hydrogeological conditions in the study area,the authors identified the major sulphate pollution sources in Baotuquan spring area of Jinan by using sulfur and oxygen isotope technology according to the actual sampling data. The contribution rates of sulphate pollution sources were estimated by IsoSource mass conservation model. The results show that the major sulphate pollution sources were atmospheric sedimentation,sewage and soil. Among them,the contribution rate of atmospheric sedimentation source is the largest,with an average value of 53. 9%,followed by sewage source,with an average value of 31%,and the contribution rate of soil source is the smallest,with an average value of 15. 1%. This study provides a new method for the quantitative study of sulphate sources of groundwater in northern karst areas,and provides a scientific basis for the prevention and control of sulphate pollution in Baotuquan spring area of Jinan.
引文
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[2]张江华,梁永平,王维泰,等.硫同位素技术在北方岩溶水资源调查中的应用实例[J].中国岩溶,2009,28(3):235-241.
[3]郭照冰,董琼元,陈天,等.硫稳定同位素对环境污染物的示踪[J].南京信息工程大学学报:自然科学版,2010,2(5):426-430.
[4] Li X D,Liu C Q,Liu X L,et al. Identification of dissolved sulfatesources and the role of sulfuric acid in carbonate weathering usingdual-isotopic data from the Jialing River,Southwest China[J]. JAsian Earth Sci,2011,42(3):370-380.
[5]张东,黄兴宇,李成杰.硫和氧同位素示踪黄河及支流河水硫酸盐来源[J].水科学进展,2013,24(3):418-426.
[6]刘春华,王威,卫政润.山东省水热型地热资源及其开发利用前景[J].中国地质调查,2018,5(2):51-56.
[7]邱述兰.利用多同位素(δ34S,δ34N,87Sr/86Sr和δ13CDIC)方法示踪岩溶农业区地下水中硝酸盐和硫酸盐的污染———以重庆市青木关地下河系统为例[D].重庆:西南大学,2012.
[8]顾慰祖.同位素水文学[M].北京:科学出版社,2011:409-414.
[9]洪业汤,张鸿斌,朱煊,等.中国煤的硫同位素组成特征及燃煤过程硫同位素分馏[J].中国科学:B辑,1992(8):868-873.
[10]张伟,刘丛强,李晓东,等.喀斯特坡地土壤硫同位素变化指示的土壤硫循环[J].环境科学,2010,31(2):415-422.
[11]顾慰祖,林曾平,费光灿,等.环境同位素硫在大同南寒武—奥陶系地下水资源研究中的应用[J].水科学进展,2000,11(1):14-20.
[12]马致远,范基姣.陕西渭北东部岩溶地下水中硫酸盐的形成[J].煤田地质与勘探,2005,33(3):45-48.
[13]李瑞,肖琼,刘文,等.运用硫同位素、氮氧同位素示踪里湖地下河硫酸盐、硝酸盐来源[J].环境科学,2015,36(8):2877-2886.
[14] Bottrell S,Tellam J,Bartlett R,et al. Isotopic composition of sul-fate as a tracer of natural and anthropogenic influences on ground-water geochemistry in an urban sandstone aquifer,Birmingham,UK[J]. Appl Geochem,2008,23(8):2382-2394.