Typical herbicide residues, trophic transfer, bioconcentration, and health risk of marine organisms
Typical herbicide residues, trophic transfer, bioconcentration, and health risk of marine organisms
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海洋生物的典型除草剂残留、营养转移、生物浓缩和健康风险
DOI：
10.1016/j.envint.2021.106500
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发表时间：
2021
影响因子：
11.8
通讯作者：
Wang Baodong
中科院分区：
文献类型：
--
作者：
Tulcan Roberto Xavier Supe;Ouyang Wei;Gu Xiang;Lin Chunye;Tysklind Mats;Wang Baodong
莠去津是一种在生长季节除草的强效除草剂，在中国被广泛使用。已知它分布在半衰期长的水生生态系统中，因此对物种和消费者构成潜在风险。本研究分析了西北太平洋胶州湾半封闭式海湾中3种软体动物、2种甲壳类动物和15种鱼类的降解阿特拉津残留浓度（N = 129）。还确定了相应的营养放大因子（TMF）、生物积累因子（BCFs）以及对最终消费者的后续风险。结果表明，鱼类和无脊椎动物的平均阿特拉津浓度分别为（0.301±0.03）ng g - 1和（0.305±0.04）ng g - 1。鱼类和无脊椎动物的BCFs分别为（5.23±1.75）L kg - 1和（5.81±1.31）L kg - 1。阿特拉津在JZB中被显著生物稀释，随着营养水平的增加，TMF值低于1 （P< 0.01）。物种敏感性分布（SSD）分析预测，阿特拉津溶解浓度（57.88 ng L−1）对海湾物种的有害影响小于0.02%，而风险商预测海湾物种的长期风险较低。最后，由于阿特拉津的每日摄入量和目标危害商非常小，饮食仅限于JZB物种的人被发现没有面临相关的健康风险。相应的非致癌效应表明食用海鲜没有显著的风险。
Atrazine, a potent herbicide for weeds removal during the growing season, has been widely used in China. It is known to be distributed in aquatic ecosystems with a long half-life, thus presenting a potential risk to species and consumers. This study analyzed the concentrations of degraded atrazine residues in marine organisms (N = 129) including 3 species of mollusks, 2 species of crustaceans, and 15 species of fish from a semi-enclosed bay, Jiaozhou Bay (JZB), adjacent to the Northwest Pacific Ocean in China. The corresponding trophic magnification factors (TMF), bioaccumulation factors (BCFs), and subsequent risks to final consumers were also determined. The results showed an average atrazine concentration of (0.301 ± 0.03) ng g−1and (0.305 ± 0.04) ng g−1in fish and invertebrates, respectively. The BCFs were (5.23 ± 1.75) L kg−1and (5.81 ± 1.31) L kg−1for fish and invertebrates, respectively. Atrazine was significantly bio-diluted in JZB through the sampled marine organisms with increasing trophic levels, with a TMF value below 1 (P< 0.01). An analysis of the species sensitivity distribution (SSD) predicted that<0.02% of species were exposed to a dissolved concentration of atrazine (57.88 ng L−1) that would lead to detrimental effects, while risk quotients predicted low long-term risks for species in the bay. Finally, people with a diet limited to species from JZB were found to face no associated health risk due to a significantly small daily intake and target hazard quotient of atrazine. The corresponding non-carcinogenic effect showed no significant risk from seafood consumption.