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首页> 外文期刊>Journal of environmental science and health >Residues of legacy organochlorine pesticides and DDT metabolites in highly consumed fish from the polluted Guanabara Bay, Brazil: distribution and assessment of human health risk
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Residues of legacy organochlorine pesticides and DDT metabolites in highly consumed fish from the polluted Guanabara Bay, Brazil: distribution and assessment of human health risk

机译:来自巴西受污染的瓜纳巴拉湾的高消费鱼中残留的有机氯农药和滴滴涕代谢产物的残留:人类健康风险的分布和评估

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Organochlorine (OCP) pesticides were determined in samples of sardine (Sardinella brasiliensis), whitemouth croaker (Micropogonias furnieri), and mullet (Mugil liza) from Guanabara Bay (state of Rio de Janeiro, Brazil). OCP concentrations and fish consumption were linked with acceptable daily intake values in order to assess the human health risk for the Brazilian population. The total concentrations of OCPs (∑ OCP) was 6.6ng/g f.w., 7.5 ng/g f.w., and 2.8ng/g f.w. for sardines, corvina, and mullet, respectively. There was a significant difference (P<0.05) among the species related to o,p'-DDD and o,p'-DDT concentrations. Both DDT-related compounds were 5 and 76 times more abundant in sardines than in whitemouth croaker and mullet. Newly discovered DDT metabolite, o-CI-DDMU, was frequently detected in the fish. None of the samples exceeded the maximum limits for acceptable levels of OCP residues. According to the data of average intake of Brazilian population, none of three species exceeded toxicological parameter. The investigated fishes are considered as safe for human consumption in regard to exposure of the studied OCPs. However, fish may be a intake source of OCP metabolites such as o-CI-DDMU whose toxicity is still unknown.
机译:在来自瓜纳巴拉湾(巴西里约热内卢州)的沙丁鱼(Sardinella brasiliensis),白嘴鱼(Micropogonias furnieri)和鱼(Mugil liza)的样品中测定了有机氯(OCP)农药。 OCP浓度和鱼类消费与可接受的每日摄入量值相关联,以评估巴西人口的人类健康风险。 OCP的总浓度(∑ OCP)为6.6ng / g f.w.,7.5 ng / g f.w.和2.8ng / g f.w.。分别用于沙丁鱼,Corvina和鱼。与o,p'-DDD和o,p'-DDT浓度有关的物种之间存在显着差异(P <0.05)。沙丁鱼中与DDT有关的两种化合物的含量都比白嘴鱼和and鱼的含量高5到76倍。鱼中经常发现新发现的DDT代谢物o-CI-DDMU。没有样品超过可接受的OCP残留量的最大限制。根据巴西人口的平均摄入量数据,三个物种均未超过毒理学参数。就所研究的OCP的暴露而言,被调查的鱼类被认为对人类食用是安全的。但是,鱼类可能是OCP代谢产物(如o-CI-DDMU)的摄入来源,其毒性尚不清楚。

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