doi:10.12202/j.0476-0301.2020426魏守才¹,
刘京涛^1,,,
夏江宝¹,
马良²
1.滨州学院山东省黄河三角洲生态环境重点实验室，256600，山东滨州
2.山东省水利科学研究院，250014，山东济南
基金项目:国家十三五重点研发计划资助课题（2017YFC0505904）；山东省自然科学基金资助项目（ZR2019PC023）；山东水土保持学会重点领域创新项目（2018001）

详细信息

通讯作者:刘京涛（1978-），男，教授，博士. 研究方向：稳定同位素生态学. E-mail：ljteco@126.com

中图分类号:X52

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出版历程

收稿日期:2020-07-15
网络出版日期:2021-03-09
刊出日期:2021-02-01

Analysis of surface water and groundwater nitrate sources in Binzhou City in the Yellow River Delta using isotopes of nitrogen and oxygen

Shoucai WEI¹,
Jingtao LIU^1,,,
Jiangbao XIA¹,
Liang MA²
1. Shandong Key Laboratory of Eco-Environmental Science for the Yellow River Delta, Binzhou University, 256600, Binzhou, Shandong, China
2. Water Resources Research Institute of Shandong Province, 250014, Jinan, Shandong, China



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摘要
摘要:利用硝酸盐氮氧双同位素技术和同位素混合模型，对滨州市水体硝酸盐的氮氧同位素组成进行分析，在此基础上进行硝酸盐污染溯源，确定各污染源的贡献率．结果表明：研究区地表水和地下水硝酸盐质量浓度分别为0~168.07、0~336.04 mg·L^?1，超标率分别为8.70%和27.78%；从河流上游到下游，地表水硝酸盐污染有加重的趋势，地下水硝酸盐污染空间变异性较大．地表水和地下水δ（¹⁵N-NO₃）范围分别为4.02‰~10.10‰、9.07‰~18.75‰，δ（¹⁸O-NO₃）范围分别为2.24‰~6.14‰、4.93‰~10.64‰；有机肥和污水是本地地表水和地下水硝酸盐污染的主要来源，其平均贡献率分别为45%和81%，其次为含氮化肥，分别占26%和17%。通过定量分析地表水及地下水硝酸盐污染来源，可以为本地区制定防治水体污染措施提供科学依据．
关键词:硝酸盐/
同位素示踪/
溯源分析/
δ(¹⁵N-NO₃)/
δ(¹⁸O-NO₃)
Abstract:The Yellow River Delta area is well developed in both agriculture and industry, but with frequent nitrate pollution in surface water and groundwater．δ(¹⁵N) and δ(¹⁸O) isotopic tracing of nitrate was used in the present study to identify major pollution sources in Binzhou City．Nitrate concentrations in surface water and groundwater was found to range from 0 to 168.07 and 0 to 336.04 mg·L^?1, with a over-standard rate of 8.70% and 27.78%, respectively．Surface water nitrate pollution became more serious down the river, nitrate concentrations in groundwater fluctuated greatly as well．δ(¹⁵N-NO₃) was found to range in surface water and groundwater from 4.02‰-10.10‰ and 9.07‰-18.75‰, δ(¹⁸O-NO₃) from 2.24‰-6.14‰ and 4.93‰-10.64‰, respectively．Manure and septic waste were found to be the major sources of nitrate pollution both in surface water and groundwater, with a contribution rate of 45% and 81%, respectively．Artificial N fertilizer was the second largest source of nitrate pollution in surface water and groundwater, with a contribution rate of 26% and 17%, respectively．These data will be helpful when making policies to prevent nitrate pollution in surface water and groundwater in the Yellow River Delta．
Key words:nitrate/
isotopic tracer/
traceability analysis/
δ(¹⁵N-NO₃)/
δ(¹⁸O-NO₃)