阿什河丰水期氮污染特征及其来源分析  

Nitrogen Pollution Characteristics and Source Analysis in Ashi River during Wet Season

作　　者：马广文[1] 王业耀[1] 香宝[2] 刘玉萍[3] 胡钰[2,4] 张立坤[2] 金霞[2] 

机构地区：[1]中国环境监测总站,国家环境保护环境监测质量控制重点实验室,北京100012 [2]中国环境科学研究院,国家环境保护区域生态过程与功能评估重点实验室,北京100012 [3]黑龙江省环境保护科学研究院,黑龙江哈尔滨150056 [4]北京师范大学水科学研究院,北京100875

出　　处：《环境科学与技术》2014年第11期116-120,155,共6页Environmental Science & Technology

基　　金：环保公益性行业科研专项(201309035-7-1);国家水体污染控制与治理科技重大专项(2014ZX07201-009-01)

摘　　要：对阿什河丰水期典型时段进行采样监测,研究了阿什河氮的污染特征,并采用稳定氮同位素示踪技术,解析了河水中氮的来源。结果表明：阿什河丰水期氨氮总的来说浓度较低,总氮的浓度较高,溶解态的硝酸盐氮对总氮的贡献较大。阿什河22个采样点δ15N-NO3-值集中分布在1.94‰-3.27‰、4.62‰-7.80‰、8.38‰-9.89‰、15.17‰-15.35‰4个区间。经分析上游部分点受大气沉降和人工化肥影响较大,部分点受畜禽养殖和生活污水的影响;中游主要受人工化肥影响较大;下游主要受土壤有机氮和工业污水的影响。无论从氨氮、总氮和硝酸盐氮的污染特征,还是从氮素的来源解析中,均体现出降雨造成的非点源氮污染对阿什河的影响。Nitrogen pollution characteristics based on water quality monitoring of Ashi River was studied and nitrogen sources were analyzed by nitrogen isotopes trace technique during typical wet season. Results showed that there was low ammonia concentration in the River, with high total nitrogen concentration and high contribution of dissolved nitrate nitrogen to total nitrogen. δ15N-NO3-value of 22 sampling points were in the range from 1.94‰ to 3.27‰, 4.62‰ to 7.80‰, 8.38‰ to9.89‰, 15.17‰ to 15.35‰. The sources of nitrate nitrogen during wet period in the upstream were partly from rainfall atmospheric deposition and artificial fertilizers, as well as from livestock farming and sewage in the River; in the midstream the sampling points were mainly affected by artificial fertilizers; while in the downstream mainly affected by soil organic nitrogen and industrial wastewater. Both pollution characteristics analysis of ammonia nitrogen, total nitrogen and nitrate nitrogen and analysis of nitrogen sources during wet period show the influence of non-point source nitrogen pollution on the River.

关 键 词：松花江 非点源 同位素示踪 硝酸盐δ15N 自然丰度 

分 类 号：X508[环境科学与工程—环境工程]