Typical herbicide residues, trophic transfer, bioconcentration, and health risk of marine organisms

Atrazine, a potent herbicide for weeds removal during the growing season, has been widely used in China. It is known to be distributed aquatic ecosystems with long half-life, thus presenting potential risk species and consumers. This study analyzed concentrations of degraded atrazine residues marine organisms (N = 129) including 3 mollusks, 2 crustaceans, 15 fish from semi-enclosed bay, Jiaozhou Bay (JZB), adjacent Northwest Pacific Ocean The corresponding trophic magnification factors (TMF), bioaccumulation (BCFs), subsequent risks final consumers were also determined. results showed an average concentration (0.301 ± 0.03) ng g−1 (0.305 0.04) invertebrates, respectively. BCFs (5.23 1.75) L kg−1 (5.81 1.31) Atrazine was significantly bio-diluted JZB through sampled increasing levels, TMF value below 1 (P < 0.01). An analysis sensitivity distribution (SSD) predicted that<0.02% exposed dissolved (57.88 L−1) that would lead detrimental effects, while quotients low long-term bay. Finally, people diet limited found face no associated health due small daily intake target hazard quotient atrazine. non-carcinogenic effect significant seafood consumption.