| 珠江三角洲北江饮用水源地新污染物的非靶向筛查与生态风险评估 |
| 摘要点击 3093 全文点击 461 投稿时间：2023-11-14 修订日期：2024-02-06 |
| 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 饮用水源水 非靶向筛查 新污染物（ECs） 生态风险评估 季节变化 |
| 英文关键词 drinking water source non-targeted screening emerging contaminants（ECs） ecological risk assessment seasonal variation |
| DOI 10.13227/j.hjkx.20241133 |
| 作者 | 单位 | E-mail | | 王芝玉 | 华南理工大学环境与能源学院, 广州 510006 | 1152853770@qq.com | | 李秋 | 华南理工大学环境与能源学院, 广州 510006
广州北江原水供应有限公司, 广州 510801 | | | 张扬忠 | 华南理工大学环境与能源学院, 广州 510006 | | | 陈振国 | 华南师范大学环境学院, 广州 510006 | | | 肖力 | 广州北江原水供应有限公司, 广州 510801 | | | 罗焰 | 广州北江原水供应有限公司, 广州 510801 | | | 邓耀烙 | 广州北江原水供应有限公司, 广州 510801 | | | 梁东海 | 广州北江原水供应有限公司, 广州 510801 | | | 汪晓军 | 华南理工大学环境与能源学院, 广州 510006 | cexjwang@scut.edu.cn |
|
| 中文摘要 |
| 为探究北江饮用水源地新污染物（ECs）的时空分布特征和评估生态风险水平,采用超高效液相色谱-质谱联用技术进行1 a（2022年6月至2023年5月）的非靶向筛查,并对8种典型ECs的浓度进行定量检测. 结果表明：非靶向筛查共识别出346种污染物,其中工业材料、药品和农药是最主要的污染物,总共占比88.2%；8种典型ECs的检出浓度范围在n.d（未检出）~180 ng·L-1,6种检出率在80%以上,内分泌干扰物类：双酚A（BPA）、4-壬基酚（4-NP）以及农药类阿特拉津（ATZ）、异丙草胺（PPS）是其中浓度较高的污染物（中值8.12~35.58 ng·L-1）；ATZ、PPS、罗红霉素（ROX）和布洛芬（IBU）春季浓度显著高于其他3个季节（P< 0.05）；采样点1（S1）与采样点3（S3）的ATZ和洛美沙星（LOM）以及采样点2（S2）的4-NP生态风险水平较高（RQ>1）,4-NP和ATZ因其高检出率与较高的生态毒性,需要引起关注. 由于ATZ主要来源于农业领域,其浓度水平随季节变化显著,建议在春季时期加强管控. 该研究为加强对该区域ECs的认识提供了有价值的参考. |
| 英文摘要 |
| To investigate the spatial and temporal distribution characteristics and assess the ecological risks associated with emerging contaminants （ECs） in the Beijiang drinking water source, non-targeted screening was conducted using the ultra-high performance liquid chromatography-mass spectrometry technique （UPLC-MS） for one year （June 2022 to May 2023）. This study also involved the quantitative detection of eight typical ECs. The results showed that through the non-targeted screening, a total of 346 pollutants were identified, with industrial materials, pharmaceuticals, and pesticides being the predominant pollutants, collectively accounting for 88.2%. Concentrations of eight representative ECs ranged from n.d （undetected） to 180 ng·L-1, with detection rates exceeding 80% for six of them. Notably, higher concentrations were found in endocrine disruptors such as bisphenol A （BPA） and 4-nonylphenol （4-NP）, along with the pesticides atrazine （ATZ） and propisochlor （PPS）, with median concentrations ranging from 8.12 to 35.58 ng·L-1. The concentrations of ATZ, PPS, roxithromycin （ROX）, and ibuprofen （IBU） were significantly higher in the spring season compared to those in other seasons （P<0.05）. Elevated ecological risk levels （RQ>1） were observed at sampling point 1 （S1） and sampling point 3 （S3） for ATZ and Lomefloxacin （LOM）, while for 4-NP, it was determined to be high only at sampling site 2 （S2）. Given their high detection rates and ecotoxicity, particular attention should be paid to ATZ and 4-NP. The concentration level of ATZ exhibited significant seasonal variation due to its agricultural origin, so it is recommended to strengthen control during spring. Overall, this research provides critical insights into a comprehensive understanding of the presence and impact of ECs in this specific region. |
|
|
|
