Spatial-seasonal distribution and ecological risk assessment of multiple herbicides (chloroacetamides, triazines, chlorophenoxy acids, bentazone) and their transformation products in the Yangtze River, China.
Herbicides such as chloroacetamides, chlorophenoxy acids, triazines, and bentazone are widely used in agriculture, contaminating aquatic ecosystems. However, their distribution and ecological risks in the Yangtze River are not clear. Thus, we analyzed 144 surface water samples (72 each in dry and wet season, respective...