Environment & Health, Journal Year: 2024, Volume and Issue: 2(11), P. 827 - 837

Published: July 5, 2024

Various contaminants are present in aquatic environment and pose potential threats to pelagic benthic organisms, calling for effective risk assessment. Traditional assessments based on target analysis useful when the principal responsible ecological known; however, these approaches become challenging dealing with chemical mixtures. In addition, compositions of mixtures often differ regions different levels socioeconomic development, requiring assessment methods that applicable under pollution scenarios. Herein, situ bioassays were conducted two native species, Chinese rare minnows (Gobiocypris rarus) Asian clams (Corbicula fluminea), economically developed watersheds China (Pearl River Basin (PRB) Taihu Lake (THB)) agriculture-dominated Poyang (PYB). Significant lethal sublethal effects (e.g., neurotoxicity, reproductive toxicity, metabolic oxidative stress) observed fish irrespective economic gradients. Notably, differed significantly between water sediment phases within same region. Target (98 contaminants) suspect screening (942 revealed regional-specific characteristics. Ecological using a weight evidence approach demonstrated both PRB at moderate high risk, as was less PYB. However, characteristics mixture varied greatly among regions. Suspect identified many pollutants not regularly monitored but environmental concentrations linked local industrial production. These distinct across basins suggest mitigating requires region-specific management measures.

Language: Английский