重庆主城区流域邻苯二甲酸酯生态风险评价

以长江、嘉陵江重庆主城区段为研究水域,利用Agilent6890N气相色谱仪对丰水期该研究水域12个采样点水体中五种邻苯二甲酸酯（PAEs）含量进行测定,分析了PAEs在该区域水体中丰水期的分布特征并进行了生态安全评价。结果表明：丰水期水体中∑PAEs的浓度范围为0.87μg/L-55.66μg/L;DBP与DEHP为优先污染物,其浓度范围在0.15μg/L-28.32μg/L与0.26μg/L-26.29μg/L;按商值法对PAEs进行生态安全评价,DMP、DEP对该水域中水生动植物无生态风险,DBP和DEHP存在潜在低风险。

Distribution Characteristics and Ecological Security Assessment of Phthalic Acid Esters in Wet Season in the River Basins of Main Districts of Chongqing

This study taking the river basins of main districts of Chongqing as the study area analyzed the concentration distribution characteristics and environmental risk assessment of Phthalic Acid Esters in wet season. The results were shown as follows： in wet season, the concentrations of ∑ PAEs in water phase ranged from 0. 87 μg/L - 55.66 μg/L; Among five studied PAEs compounds, DBP and DEHP were the Priority Pollutants. The concentrations of DBP in water phase ranged from 0. 15 μg/L - 28. 32 μg/L, The concentrations of DEHP in water phase ranged from 0. 26 μg/L -26. 29 μg/L; according to the quotient method, the ecological risk was analyzed, there were no ecological risk to DMP, DEP, and there were low ecological risk to DBP and DEHP.