巢湖四条入湖河流硝态氮污染来源的氮稳定同位素解析
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摘要
采用氮稳定同位素技术对巢湖四条主要污染输入河流(南淝河、十五里河、派河和双桥河)的氮污染状况和硝态氮来源进行研究.结果表明,巢湖四条入湖河流氮污染最严重的是十五里河,其次是南淝河和派河,双桥河的污染相对较轻.硝态氮的稳定同位素分析结果表明,巢湖四条入湖河流的硝态氮污染物在季节上受到不同因子的影响.十五里河和南淝河的硝态氮污染主要来源于城市生活污水和工业废水;派河的硝态氮污染在冬季主要来源于工业废水,春季来源于农业面源,而在夏季主要受到雨水的影响;双桥河的硝态氮污染冬、春季主要来源于农业面源,夏季主要受雨水的影响.此外本研究结果还表明巢湖四条主要入湖河流的氮污染源主要为铵态氮,因此今后要对铵态氮的来源进行同位素示踪.
Nitrogen isotopic technique was used to study the nitrate pollution of four inflowing rivers of Lake Chaohu in different seasons.Our results showed that River Shiwulihe was the most polluted river,while River Shuangqiaohe as the least polluted one.Nitrogen Stable isotopic values demonstrat that nitrate sources differ in various seasons for those four rivers.The dominate pollution sources of nitrate for River Shiwulihe and River Nanfeihe are human sewage and industry discharge.In the case of River Paihe,nitrate is mainly derived from industry discharge in winter,which is originated from agriculture and rainfall in spring and summer,respectively.For River Shuangqiaohe,nitrate contamination is mainly caused by agriculture in winter and spring,but is influenced by rainfall in summer.In addition,our results imply that ammonium is the main nitrogen pollution compound in those four rivers,and δ15 NH+4 value should be detected for the identification of ammonium sources in further study.
Nitrogen isotopic technique was used to study the nitrate pollution of four inflowing rivers of Lake Chaohu in different seasons.Our results showed that River Shiwulihe was the most polluted river,while River Shuangqiaohe as the least polluted one.Nitrogen Stable isotopic values demonstrat that nitrate sources differ in various seasons for those four rivers.The dominate pollution sources of nitrate for River Shiwulihe and River Nanfeihe are human sewage and industry discharge.In the case of River Paihe,nitrate is mainly derived from industry discharge in winter,which is originated from agriculture and rainfall in spring and summer,respectively.For River Shuangqiaohe,nitrate contamination is mainly caused by agriculture in winter and spring,but is influenced by rainfall in summer.In addition,our results imply that ammonium is the main nitrogen pollution compound in those four rivers,and δ15 NH+4 value should be detected for the identification of ammonium sources in further study.
引文
[1]王绪伟,王心源,史杜芳.巢湖污染现状与水质恢复措施.环境保护科学,2007,33(4):13-15.
[2]Townsend-Small A,McCarthy MJ,Brandes JA et al.Stable isotopic composition of nitrate in Lake Taihu,China,and ma-jor inflow rivers.Hydrobiology,2007,581:135-140.
[3]Chang CCY,Kendall C,Silva SR et al.Nitrate stable isotopes:tools for determining nitrate sources among different landuses in the Mississippi River Basin.Canadian Journal of Fisheries and Aquatic Sciences,2002,59(12):1874-1885.
[4]肖化云,刘丛强.氮同位素示踪贵州红枫湖河流季节性氮污染.地球与环境,2004,32:71-75.
[5]赵新锋,陈法锦,陈建耀.城市地下水硝酸盐污染以及成因分析.水文地质工程地质,2008,3:87-91.
[6]邢萌,刘卫国,胡婧.浐河、涝河河水硝态氮污染来源的氮同位素示踪.环境科学,2010,31(10):2305-2310.
[7]邢萌,刘卫国.西安浐河、灞河硝态氮同位素特征及污染源示踪探讨.地球学报,2008,29(6):783-789.
[8]Silva SR,Kendall C,Wilkison DH et al.A new method for collection of nitrate from freshwater and the analysis of nitro-gen and oxygen isotope ratios.Journal of Hydrology,2000,228:22-36.
[9]郝晓地,张自杰.水体氮污染及其防治对策.环境污染与防治,1990,12(4):25-27.
[10]王献平,陶冶,李韧等.汽车工业涂装废水水质特征及治理措施探讨.郑州轻工业学院学报:自然科学版,2007,22(4):38-40.
[11]McClelland JW,Valiela I,Michener RH.Nitrogen-stable isotope signatures in estuarine food webs:A record of increasingurbanization in coastal watersheds.Limnology and Oceanography,1997,42(5):930-937.
[12]黄东迈,朱培立.有机氮各化学组分在土壤中的转化与分配.江苏农业学报,1986,2(2):17-25.
[13]Xiao HY,Liu CQ.Sources of nitrogen and sulfur in wet deposition at Guiyang,southwest China.Atmospheric Environ-ment,2002,36:5121-5130.
[14]Macko SA,Ostrom NE.Pollution studies using nitrogen isotopes.In:Lajtha K,Michener RM eds.Stable isotopes inecology and environmental science.Oxford:Blackwell Scientific Publishers,1994:45-62.
[15]Xing GX,Cao YC,Shi S et al.N pollution sources and denitrification in waterbodies in Taihu Lake region.Science inChina Series B:Chemistry,2001,44(3):304-314.
[16]Liu CQ,Li SL,Lang YC et al.Usingδ15N-andδ18O-values to identify nitrate sources in Karst ground water,Guiyang,Southwest China.Environmental Science and Technology,2006,40:6928-6933.
[2]Townsend-Small A,McCarthy MJ,Brandes JA et al.Stable isotopic composition of nitrate in Lake Taihu,China,and ma-jor inflow rivers.Hydrobiology,2007,581:135-140.
[3]Chang CCY,Kendall C,Silva SR et al.Nitrate stable isotopes:tools for determining nitrate sources among different landuses in the Mississippi River Basin.Canadian Journal of Fisheries and Aquatic Sciences,2002,59(12):1874-1885.
[4]肖化云,刘丛强.氮同位素示踪贵州红枫湖河流季节性氮污染.地球与环境,2004,32:71-75.
[5]赵新锋,陈法锦,陈建耀.城市地下水硝酸盐污染以及成因分析.水文地质工程地质,2008,3:87-91.
[6]邢萌,刘卫国,胡婧.浐河、涝河河水硝态氮污染来源的氮同位素示踪.环境科学,2010,31(10):2305-2310.
[7]邢萌,刘卫国.西安浐河、灞河硝态氮同位素特征及污染源示踪探讨.地球学报,2008,29(6):783-789.
[8]Silva SR,Kendall C,Wilkison DH et al.A new method for collection of nitrate from freshwater and the analysis of nitro-gen and oxygen isotope ratios.Journal of Hydrology,2000,228:22-36.
[9]郝晓地,张自杰.水体氮污染及其防治对策.环境污染与防治,1990,12(4):25-27.
[10]王献平,陶冶,李韧等.汽车工业涂装废水水质特征及治理措施探讨.郑州轻工业学院学报:自然科学版,2007,22(4):38-40.
[11]McClelland JW,Valiela I,Michener RH.Nitrogen-stable isotope signatures in estuarine food webs:A record of increasingurbanization in coastal watersheds.Limnology and Oceanography,1997,42(5):930-937.
[12]黄东迈,朱培立.有机氮各化学组分在土壤中的转化与分配.江苏农业学报,1986,2(2):17-25.
[13]Xiao HY,Liu CQ.Sources of nitrogen and sulfur in wet deposition at Guiyang,southwest China.Atmospheric Environ-ment,2002,36:5121-5130.
[14]Macko SA,Ostrom NE.Pollution studies using nitrogen isotopes.In:Lajtha K,Michener RM eds.Stable isotopes inecology and environmental science.Oxford:Blackwell Scientific Publishers,1994:45-62.
[15]Xing GX,Cao YC,Shi S et al.N pollution sources and denitrification in waterbodies in Taihu Lake region.Science inChina Series B:Chemistry,2001,44(3):304-314.
[16]Liu CQ,Li SL,Lang YC et al.Usingδ15N-andδ18O-values to identify nitrate sources in Karst ground water,Guiyang,Southwest China.Environmental Science and Technology,2006,40:6928-6933.
目录