School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China; Environmental Engineering Research Centre, Department of Civil Engineering, The University of Hong Kong, Hong Kong, China.
School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China.
Chemosphere. 2022 Nov;307(Pt 3):135932. doi: 10.1016/j.chemosphere.2022.135932. Epub 2022 Aug 5.
Phthalic acid esters (PAEs) are commonly used as plasticizer and are emerging concern worldwide for potent adverse effects of aquatic organisms. Certain PAEs were often detected in different environmental matrices but related toxicity data were still lacking to support their risk assessment. The study investigated the acute toxicity of Diisobutyl phthalate (DiBP) and Di-n-octyl phthalate (DnOP) using 6 Chinese resident aquatic organisms from 3 phyla and 6 species and constructed the species sensitivity distribution (SSD) models for ecological risk assessment. Lethal concentration 50% (LC) ranges of DiBP and DnOP were 4.89-21.45 mg/L and 1.45-1200 mg/L, respectively. The derived acute and chronic predicted no-effect concentrations (PNECs) based on log-normal model of water were 0.54 and 0.04 mg/L for DiBP and 0.23 and 0.05 mg/L for DnOP, respectively. The ERA for DiBP and DnOP in the surface water and sediment of China was conducted. Water samples of Haihe Rive (RQ = 0.41) and Hun River (RQ = 0.16) of DiBP showed medium risk. And sediment samples of Yellow River (RQ = 0.71) and Chao Hu Lake (RQ = 0.42) of DiBP showed medium risk. Meanwhile, the above water and sediment samples (RQ＜0.1) of DnOP showed low risk.
邻苯二甲酸酯（PAEs）作为增塑剂被广泛使用，对水生生物具有潜在的强烈影响，现已成为全球关注的焦点。不同环境基质中经常检测到某些 PAEs，但缺乏相关毒性数据来支持其风险评估。本研究使用来自 3 个门和 6 个物种的 6 种中国本土水生生物，研究了邻苯二甲酸二异丁酯（DiBP）和邻苯二甲酸二正辛酯（DnOP）的急性毒性，并构建了物种敏感性分布（SSD）模型，用于生态风险评估。DiBP 和 DnOP 的半数致死浓度（LC）范围分别为 4.89-21.45 mg/L 和 1.45-1200 mg/L。基于水的对数正态模型得出的急性和慢性预测无效应浓度（PNEC）分别为 0.54 和 0.04 mg/L。对中国地表水和沉积物中的 DiBP 和 DnOP 进行了 ERA。海河流域（RQ=0.41）和浑河流域（RQ=0.16）的 DiBP 水样显示中等风险。黄河（RQ=0.71）和潮湖（RQ=0.42）的 DiBP 沉积物样品显示中等风险。同时，DnOP 的上述水样（RQ＜0.1）和沉积物样品显示低风险。
