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| 京郊典型河流农用水中全氟化合物赋存特征、源解析及生态风险评估 |
| Characteristics， sources， and risk assessment of perfluorinated compounds in agricultural water of typical rivers in suburban Beijing |
| Received:April 11, 2023 |
| DOI：10.13254/j.jare.2023.0221 |
| 中文关键词: 典型河流，全氟化合物，农用水，赋存特征，源解析，北京 |
| 英文关键词: typical rivers, perfluorinated compounds, agricultural water, distribution characteristics, source resolution, Beijing |
| 基金项目:北京市科学技术委员会重点项目（Z211100007021005） |
| Author Name | Affiliation | E-mail | | ZHAO Yuan | Beijing Agricultural Product Quality and Safety Center, Beijing 102629, China | | | YANG Hongju | Beijing Agricultural Product Quality and Safety Center, Beijing 102629, China | | | WEN Yajun | Beijing Agricultural Product Quality and Safety Center, Beijing 102629, China | | | XIAO Zhiyong | Beijing Agricultural Product Quality and Safety Center, Beijing 102629, China | hjzncp@126.com |
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| 中文摘要: |
| 为探究京郊典型河流农用水中全氟化合物（Perfluorinated Compounds，PFCs）污染特征及空间分布，以北京市郊区典型河流——通州区凉水河、房山区刺猬河-小清河的农用水为研究对象，共调查采集30个水体样品。采用超高效液相色谱-串联质谱分析方法对水体中PFCs的种类、浓度进行测定，并对其赋存特征及可能的来源进行分析，最终进行生态风险评估。结果表明：京郊典型河流农用水环境中PFCs种类较多且污染水平较低。通州区凉水河中检出11种PFCs，∑PFCs浓度范围为0~62.7 ng·L-1，最主要的PFCs为全氟丁烷羧酸（PFBA）、全氟己烷羧酸（PFHxA）、全氟辛烷羧酸（PFOA）。房山区刺猬河-小清河中21种PFCs全部被检出，∑PFCs浓度范围为0~93.1 ng·L-1，最主要的PFCs为全氟戊烷羧酸（PFPeA）、全氟十一烷羧酸（PFUnDA）和全氟十二烷磺酸（PFDoDs）。京郊典型河流农用水中PFCs污染的分布特征总体呈现上游高于下游的趋势，污染主要来自污水处理厂出水的排放和地表径流输入。生态风险评估表明，水体中PFCs的浓度均未达到对生态环境造成危害的水平。 |
| 英文摘要: |
| Characteristics and spatial distribution of perfluorinated compounds（PFCs）pollution in agricultural water of suburban Beijing typical rivers were investigated in 30 water samples collected from the agricultural water of Liangshui River in Tongzhou District and Ciwei River-Xiaoqing River in Fangshan District. The species and concentration of PFCs in water were determined and studied using ultra-high performance liquid chromatography-tandem mass spectrometry, and occurrence characteristics and possible sources of PFCs were analyzed. Finally, an ecological risk assessment was performed. More PFCs were detected at low levels in the agricultural water environment of typical rivers in suburban Beijing. Eleven types of PFCs were detected in Liangshui River. The total PFC concentration range was 0-62.7 ng·L-1, and the main PFCs were perfluorobutanoic acid, perfluorohexanoic acid, and perfluorooctanoic acid. Twenty one PFCs were detected in Ciwei River-Xiaoqing River. The total PFC concentration range was 0-93.1 ng · L-1, and the main PFCs were perfluoropentanoic acid, perfluoroundecanoic acid, and perfluorododecanesulfonate. The results revealed great upstream pollution of PFCs from agricultural water in typical rivers of suburban Beijing. Pollution originated mainly from sewage treatment plant effluent discharge and surface runoff. The ecological risk assessment showed that the concentrations of PFCs in water bodies did not reach levels that are harmful to the ecological environment. |
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