Occurrence, spatiotemporal distribution, and risk assessment of herbicides in a subtropical agricultural watershed

Herbicides in landfill environments: multi-source characterization and priority risk pollutants in leachate and adjacent waters.

This study investigated the occurrence, distribution, and ecological risks of 29 herbicides in water bodies surrounding a landfill in North China. Analysis revealed that 24 herbicides were ubiquitously detected, though at trace concentrations (ng L-1 level). The herbicide compositions varied significantly among the lea...

PESTICIDE BIOACCUMULATION IN FISH FROM AN AGRICULTURAL WATERSHED: PATTERNS, DRIVERS, AND IMPLICATIONS FOR MONITORING.

Pesticide occurrence, composition, and bioaccumulation patterns in fish from the San Salvador River watershed (Uruguay) were evaluated by integrating biological, chemical, and environmental data. A total of 158 fish samples representing 31 species were analyzed across four seasons at nine sampling sites spanning a long...

Multi-Residue Occurrence and Environmental Risk Assessment in Surface Waters Under Intensive Agricultural Influence

Intensive agricultural activities have increased organic pollutant contamination of water bodies, posing significant risks to water quality, aquatic ecosystems, biodiversity, and human health. This study investigated the occurrence of 40 pesticides in surface waters of the Pirapó River Basin and assessed their potentia...

Assessing pesticide pollution in surface water of two basins in western Mexico: spatiotemporal variability, potential ecological risk assessment, and pesticides prioritization

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...

Organonitrogen pesticides in Beibu gulf seawater: spatiotemporal distribution, key influencing factors, sources, and ecological risks.

Organonitrogen pesticides (ONPs) are widely used in agriculture and can enter the ocean via surface runoff, posing potential threats to marine ecosystems. This study systematically investigated the occurrence and spatiotemporal distribution of 49 ONPs in seawater of the Beibu gulf, China, examined their key influencing...