| 长江中下游全氟化合物赋存特征分析 |
| 摘要点击 610 全文点击 20 投稿时间:2025-07-10 修订日期:2025-10-17 |
| 查看HTML全文
查看全文 查看/发表评论 下载PDF阅读器 |
| 中文关键词 新污染物 全氟化合物(PFASs) 长江中下游 环境监测 赋存特征 |
| 英文关键词 emerging pollutants per- and polyfluoroalkyl substances (PFASs) the middle-lower Yangtze River environment monitoring occurrence characteristics |
| DOI 10.13227/j.hjkx.202507140 |
|
| 中文摘要 |
| 长江流域经济社会发展速度较快, 工业产业发达, 全氟化合物(PFASs)生产、加工、使用活动频繁. 2022年以来, 我国颁布了《新污染物治理行动方案》(国办发〔2022〕15号)和《重点管控新污染物清单(2023年版)》, 对PFASs管控提出了新要求. 在长江中下游于2022~2023年4月和10月共开展了4次22种PFASs调查监测, 以探究新政策背景下长江中下游的PFASs赋存特征. 结果表明, 长江中下游∑PFASs质量浓度为10.3~280.9 ng·L-1, 均值为65.5 ng·L-1, 短链PFASs(C4~C6)的检出质量浓度明显更高且2 a间逐渐增加, PFOS和PFOA等重点管控新污染物也有检出, 其检出质量浓度在2 a间有所下降, F-53B等替代物的检出质量浓度略有增加. 2022年, 长江中下游局部出现极端∑PFASs质量浓度值, 分别位于岳阳、九江、镇江、泰州、南通和苏州等江段. 2023年, 从长江中游到下游∑PFASs质量浓度呈现明显递增趋势, 展现出向下游蓄积的规律, 局部极端∑PFASs质量浓度峰明显消失或降低. 长江中下游PFASs赋存变化与各省污水排放量、长江径流量、PFASs管控政策和替代物的广泛使用等密切相关. PFASs赋存变化特征及∑PFASs质量浓度均值与沿岸各省入江废水量呈极显著相关性, 说明新政策背景下长江中下游沿江各省对新污染物的管控取得一定成效. |
| 英文摘要 |
| Since 2022, the “Action Plan for the Control of Emerging Pollutants” and the “List of Key Control Emerging Pollutants (2023 Edition)” have been issued, which have put forward new requirements for the control of PFASs. Monitoring was conducted for 22 PFASs in April and October of 2022 and 2023. In this work, ∑PFASs concentrations ranged from 10.3 to 280.9 ng·L-1, with an average concentration of 65.5 ng·L-1. Short-chain PFASs (C4-C6) were detected more frequently compared to long-chain PFASs (C7-C18). The detected concentrations of key controlled emerging pollutants such as PFOS and PFOA have decreased. In 2022, extreme concentrations of ∑PFASs were observed in specific sections along the Yangtze River, including Yueyang, Jiujiang, Zhenjiang, Taizhou, Nantong, and Suzhou. In 2023, the ∑PFASs concentrations in the main stream exhibited an increasing trend from the middle to the lower reaches, and extreme concentrations had disappeared. The changes were related to the sewage discharge volume, water flow rate, PFASs control policies, and the widespread use of PFASs substitutes in various provinces. These results indicate that, under new policies, provinces or municipalities along the middle-lower Yangtze River have achieved significant progress in controlling PFASs. |