College of Environmental Science and Engineering, Ocean University of China, Qingdao 266100, China.
College of Environmental Science and Engineering, Ocean University of China, Qingdao 266100, China; Key Laboratory of Marine Environment and Ecology, Ministry of Education, Ocean University of China, Qingdao 266100, China.
Mar Pollut Bull. 2024 Sep;206:116669. doi: 10.1016/j.marpolbul.2024.116669. Epub 2024 Jul 10.
Dichlorvos (DDVP) is a widely used organophosphorus pesticide (OPP) that has been frequently detected in the marine environment of China. Water quality criteria (WQC) is however not available for this emergent pollutant in the marine environment, which hinders its ecological risk assessment. This study, therefore, screened toxicity values of DDVP and conducted toxicity tests on six marine species to supplement toxicity data. The WQC for DDVP was derived with the species sensitivity distribution (SSD) methodology, based on which the ecological risk of DDVP in the seawater of China was assessed. The results showed that the recommended short-term (SWQC) and long-term water quality criteria (LWQC) for DDVP were 1.47 and 0.0521 μg/L, respectively. Most marine waters of China showed low or negligible risk (HQ < 1, ORP < 2 %), whereas some estuarine waters warrant further concern due to higher risk. This study provides the scientific basis for seawater quality standard formulation and ecological risk management for DDVP.
敌敌畏（DDVP）是一种广泛使用的有机磷农药（OPP），在中国的海洋环境中经常被检测到。然而，这种新出现的污染物在海洋环境中没有水质标准（WQC），这阻碍了其生态风险评估。因此，本研究筛选了敌敌畏的毒性值，并对六种海洋物种进行了毒性测试，以补充毒性数据。根据物种敏感性分布（SSD）方法，推导出了敌敌畏的水质标准，据此评估了敌敌畏在中国海水中的生态风险。结果表明，推荐的敌敌畏短期（SWQC）和长期水质标准（LWQC）分别为 1.47 和 0.0521μg/L。中国大部分海洋水域的风险较低或可忽略不计（HQ<1，ORP<2%），而一些河口水域由于风险较高，需要进一步关注。本研究为制定海水质量标准和管理敌敌畏的生态风险提供了科学依据。
