水环境硝酸盐氮污染研究新方法——<sup>15</sup>N和<sup>18</sup>O相关法

周爱国; 陈银琢; 蔡鹤生; 刘存富; 杨琰

水环境硝酸盐氮污染研究新方法——¹⁵N和¹⁸O相关法

中国地质大学工程学院环境与水文地质系, 湖北武汉 430074

基金项目:

国家自然科学基金项目 40072081

详细信息

作者简介:
周爱国(1966-)男, 副教授, 1995年毕业于中国地质大学, 获硕士学位, 现从事水文地质、环境地质、同位素水文地质教学和研究工作. E-mail: kyc05@cug.edu.cn

中图分类号: P641.3
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出版历程
- 收稿日期: 2002-05-18
- 刊出日期: 2003-03-25

New Way in NO₃^--N Contamination Study of Water Environment: Correlative Method of ¹⁵N & ¹⁸O

Department of Environment & Hydrogeology, Engineering Faculty, China University of Geosciences, Wuhan 430074, China

摘要

摘要: 最近40年, 硝酸盐已成为一个共同的地下水污染物.使用CaO定量地除去CO₂和H₂O的新的焊封管燃烧法分析了NO₃^-中的氮同位素比值.应用AgNO₃+C的新的焊封管燃烧法进行了NO₃^-中氧同位素分析.安阳和林县饮用水中广泛的NO₃-N污染大大超过饮用标准是一个主要问题.食管癌的死亡率与饮用水中NO₃^-、NO₂^-、NH₄⁺和亚硝胺过剩的含量成正比.^δ(¹⁵N) 和δ(¹⁸O) 研究资料指出, 在这个地区饮用水中的NO₃^-主要来自农家肥和化肥.地下水NO₃^-的δ(¹⁸O) 明确地指出, 在这个地区不存在有意义的反硝化作用发生.相反, 由NH₄⁺到NO₃^-的需氧硝化作用可导致NO₃^-中的氧1/3来自空气, 2/3来自水.
- NO₃^-中的¹⁵N和¹⁸O /
- NO₃-N污染 /
- 食管癌
Abstract: During the last 40 years, nitrate has become one of the most common groundwater contaminants. In this paper, the nitrogen isotope rations in NO₃^- have been analyzed by a new sealed-tube combustion technique using CaO for quantitative removal of CO₂ and water. Oxygen isotope analysis in NO₃^- was conducted by using new sealed-tube combustion technique of AgNO₃+C. Extensive NO₃^--N contamination of drinking water in Lin and Anyang district to a level above drinking water limits is a major problem. It is found that the rate of death of esophagus cancer is proportional to the excessive content of NO₃^-, NO₂^-, NH₄⁺ and nitrosamine in drinking water. The study data of δ(¹⁵N) and δ(¹⁸O) show that NO₃^- in drinking water was predominantly derived from manure and fertilizer in this region. The δ(¹⁸O) of groundwater NO₃^- indicated conclusively that no significant denitrification was found in this area. Conversely, the aerobic nitrification pathway from NH₄⁺ to NO₃^- results in one third of the oxygen in the NO₃^- derived from air and two thirds derived from water.
- δ(¹⁵N) and δ(¹⁸O) in NO₃^- /
- NO₃^--N contamination /
- esophagus cancer

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参考文献(25)

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水环境硝酸盐氮污染研究新方法——¹⁵N和¹⁸O相关法

作者简介:
周爱国(1966-)男, 副教授, 1995年毕业于中国地质大学, 获硕士学位, 现从事水文地质、环境地质、同位素水文地质教学和研究工作. E-mail: kyc05@cug.edu.cn

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New Way in NO₃^--N Contamination Study of Water Environment: Correlative Method of ¹⁵N & ¹⁸O

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水环境硝酸盐氮污染研究新方法——15N和18O相关法

作者简介: 周爱国(1966-)男, 副教授, 1995年毕业于中国地质大学, 获硕士学位, 现从事水文地质、环境地质、同位素水文地质教学和研究工作. E-mail: kyc05@cug.edu.cn

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New Way in NO3--N Contamination Study of Water Environment: Correlative Method of 15N & 18O

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出版历程

目录

水环境硝酸盐氮污染研究新方法——¹⁵N和¹⁸O相关法

作者简介:
周爱国(1966-)男, 副教授, 1995年毕业于中国地质大学, 获硕士学位, 现从事水文地质、环境地质、同位素水文地质教学和研究工作. E-mail: kyc05@cug.edu.cn

New Way in NO₃^--N Contamination Study of Water Environment: Correlative Method of ¹⁵N & ¹⁸O