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首页> 美国卫生研究院文献>The Scientific World Journal >Levels of PAHs in the Waters Sediments and Shrimps of Estero de Urias an Estuary in Mexico and Their Toxicological Effects
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Levels of PAHs in the Waters Sediments and Shrimps of Estero de Urias an Estuary in Mexico and Their Toxicological Effects

机译：墨西哥河口埃斯特罗-德乌里亚斯的水沉积物和虾中多环芳烃的含量及其毒理作用

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摘要

PAHs were measured in water, sediment, and shrimps of Estero de Urias, an estuary in Sinaloa, Mexico, during the rainy and dry seasons, and analyzed for eleven PAHs routinely detected in samples. Phenanthrene was the most dominant congener in the water, sediment, and shrimp samples comprising about 38, 24, and 25%, respectively, of the eleven PAHs detected, followed by pyrene and naphthalene in water and sediment samples, and pyrene and fluorine in the shrimp samples. Total PAH concentrations ranged from 9 to 347 ng/L in water, 27 to 418 ng/g in sediments, and 36 to 498 ng/g in shrimps. The sources of contamination are closely related to human activities such as domestic and industrial discharge, automobile exhausts, and street runoff. High concentrations were also measured during the rainy season and during the first quarter of the year. Toxicity tests were also carried out, exposing fish embryos and juvenile shrimps to some of these PAHs. Fish embryos exposed to PAHs showed exogastrulation, while juvenile shrimps showed significantly lower growth rates than controls. DNA and protein alterations were also observed. These toxicity tests indicate that PAH concentrations measured could be dangerous to some aquatic organisms, particularly during early stages of development.
机译：在雨季和干旱季节，在墨西哥锡那罗亚州河口Estero de Urias的水，沉积物和虾中测量PAHs，并分析样品中常规检测到的11种PAHs。菲是水，沉积物和虾类样品中最主要的同类物，分别占所检测的11种多环芳烃的38％，24％和25％，其次是水和沉积物样品中的and和萘，以及水中的pyr和氟。虾样品。水中的多环芳烃总浓度为9-347 ng / L，沉积物为27-418 ng / g，虾为36-498 ng / g。污染源与人类活动密切相关，例如家庭和工业排放，汽车尾气和街道径流。在雨季和一年的第一季度也测出了高浓度。还进行了毒性测试，将鱼胚和幼虾暴露于其中的某些多环芳烃中。暴露于多环芳烃的鱼胚表现出排卵，而幼虾的生长速度明显低于对照。还观察到DNA和蛋白质改变。这些毒性测试表明，所测量的PAH浓度可能对某些水生生物具有危险，尤其是在发育初期。

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