【摘要】 北江作为清远市居民的主要生活饮用水水源,水体中持久性有机污染物污染问题备受重视,但目前对于北江清远段水体中酞酸酯的研究较少。了解PAEs的分布、来源、健康及生态风险,对于保障北江清远段居民的饮用水安全具有重要意义,可为北江水生态环境保护管理提供参考。于2016年7月（丰水期）和12月（枯水期）在北江清远段流域采集地表水和沉积物样品,采用气相色谱质谱（GC-MS）法测定了北江清远段水和沉积物中酞酸酯含量,分析其污染水平和分布特征,并开展健康风险和生态风险评估。结果表明,北江清远段地表水中丰水期和枯水期PAEs质量浓度范围分别在nd-7.71μg?L^-1和0.55-7.92μg?L^-1之间,沉积物PAEs质量分数范围分别在0.346-3.31μg?g^-1和0.66-91.35μg?g^-1之间,与长江武汉段、第二松花江、珠江、法国塞纳河等国内外河流湖泊相比,北江清远段水中PAEs污染处于中等偏低的污染水平,而沉积物处于中等污染水平。丰水期水中PAEs主要来源于工业生产过程和当地居民生活垃圾,枯水期水中PAEs主要来源于生活垃圾和工业生产垃圾;丰枯两季沉积物中PAEs主要来源家庭塑料垃圾的排放。枯水期邻近坑口咀的采样点（BJ-3）∑PAEs和DEHP存在致癌风险,而其他采样点存在潜在非致癌风险;而沉积物中PAEs对水藻类和鱼类的毒害效应高于甲壳类。更多还原

【Abstract】 Beijiang is the main source of drinking water for residents in Qingyuan, it has received increasing attention for its persistent organic pollutants（POPs） pollution conditions. Nevertheless, few studies on phthalic acid esters（PAEs） in water of Qingyuan section have been reported. It will be of great significance to understand the distribution, source, and health and ecological risks of PAEs for ensuring the drinking water saftey of residents in Qingyuan section of Beijiang River and providing reference for the protection and management of the ecology and environment of Beijiang River. In this study, surface water and sediment samples were collected in the Qingyuan section of the Beijiang River during the flood season（July） and dry season（December） in 2016. In this study, PAEs in the samples were determined by gas chromatography-mass spectrometry（GC-MS）, the pollution level of PAEs in Beijiang River water environment was evaluated, health risk and ecological risk was accessed. The result showed that the mass concentration of PAEs ranged from not detected to 47.71 μg?L^-1 in flood season and 0.55 to 7.92 μg?L^-1 in dry season in Qingyuan section of Beijiang River. Compared with the rivers and lakes in Wuhan section of the Yangtze River, the Second Songhua River, the Pearl River and the Seine River in France, the PAEs pollution level in the surface water of the Qingyuan section of Beijiang River was at the moderate and low, whereas the PAEs pollution level in the sediments was moderate, and the mass fraction of PAEs ranged from 0.34 to 63.31 μg?g^-1 in flood season and 0.66 to 91.35 μg?g^-1 in dry season, respectively. PAEs in water phase in flood season mainly came from industrial production process and local household garbage, while household garbage in dry season. However, PAEs in sediments mainly came from the discharge of household plastic garbage. PAEs and DEHP at Kengkouju（BJ-3）sampling site in wet season arrived at carcinogenic risk level, while other sampling sites had potential non-carcinogenic risk.The toxic effect of PAEs in sediments on algae and fish was higher than that of crustaceans.更多还原