| 摘要: |
| 于2022年9月，对长江流域饮用水水源地及重要国控断面共37个点位的16种邻苯二甲酸酯（PAEs）残留开展了监测调查及生态风险评估。结果显示，长江流域饮用水水源地和国控断面中检出的PAEs质量浓度为0.499~6.018 μg/L，其中，邻苯二甲酸二异丁酯（DIBP）、邻苯二甲酸二正丁酯（DBP）和邻苯二甲酸二（2-乙基己基）酯（DEHP）为主要检出物质。不同地区的PAEs赋存水平呈现差异，其中湖南省饮用水水源地的PAEs检出浓度最高。此外，PAEs质量浓度与监测点位所在地区的人口数量和国内生产总值（GDP）存在一定的正相关性。生态风险评估结果表明，DBP处于低风险等级，DIBP对鱼类具有中、高风险影响；而DEHP生态风险水平最高，对藻类、甲壳类和鱼类均表现出中、高风险水平。已有文献研究比对分析发现，2009—2022年长江流域大部分地区的PAEs残留浓度随时间呈下降趋势，且饮用水水源地的PAEs质量浓度比地表水环境更低。研究结果可为长江流域饮用水水源地保护和地表水环境改善提供决策依据。 |
| 关键词: 长江流域 饮用水水源地 邻苯二甲酸酯 赋存状况 风险评估 |
| DOI：10.3969/j.issn.1674-6732.2023.06.001 |
| 分类号:X832 |
| 基金项目:国家重点研发计划项目（2021YFC3201002） |
|
| Investigation and Environmental Risk Assessment of Phthalates in Drinking Water Sources and State Controlled Sections in the Yangtze River Basin |
|
LU Dingkun，ZHAI Wanying，TAN Lingzhi，YANG Xuguang，XIE Weiming*
|
|
Ecological Environment Monitoring and Scientific Research Center， Ecology and Environment Supervision and Administration Bureau of Yangtze Valley， Ministry of Ecology and Environment of the Peoples Republic of China，Wuhan，Hubei 430015，China
|
| Abstract: |
| In September 2022， an investigation was carried out by monitoring and analyzing 16 phthalates（PAEs） in 31 drinking water sources and 6 control sections in the Yangtze River Basin，and their ecological risk assessment was also conducted. The results showed that the concentrations of PAEs detected in 37 locations in the Yangtze River Basin were 0.499~6.018μg/L， with Diisobutyl phthalate（DIBP），Dibutyl phthalate（DBP），and Di-2-ethylhexyl phthalate（DEHP） as the main detected substances. The concentration of PAEs in different regions were different，and the concentration of PAEs in Hunan Province was the highest. In addition，there is a certain correlation between the concentration of PAEs and the population or GDP of the area where the monitoring points are located. The ecological risk entropy method was used to evaluate the impact of PAEs. Their results showed that DBP showed a low ecological risk，and DIBP showed a medium to high ecological risk for fish. While DEHP showed the highest ecological risk， exhibiting medium to high risk for algae，crustaceans，and fish. By comparing different time and space，it found that the detection concentration of PAEs in most areas of the Yangtze River Basin showed a decreasing trend over time，and the mass concentration of PAEs in drinking water sources was lower than that in the control sections. This study revealed the distribution characteristics and correlation of PAEs in water source areas and control sections in the Yangtze River Basin，and provided important information for ecological risk assessment，and provided decision making basis for water source protection and environmental improvement in the Yangtze River basin. |
| Key words: Yangtze River Basin Drinking water source Phthalates Occurrence Risk assessment |
