Abstract：
Petroleum hydrocarbons (PHCs) residues in commercially important fish and shrimp species from Asia\'s largest brackish water lagoon, Chilika and their dietary risk factors like Bioaccumulation factor (BAF), Estimated dietary intake (EDI) and Exposure risk index (ERI) were investigated. The PHCs in water samples were found within the range of 2.21 to 9.41 μg/l; while in organisms, PHCs varied from 0.74 to 3.16 μg/g (wet weight). The lowest and highest PHCs concentration was observed in Etroplus suratensis (0.74 ± 0.12; crude fat 0.57 %) and Nematalosa nasus (3.16 ± 0.12; crude fat 6.43 %) respectively. From human health risk view point, the calculated BAF, EDI, ERI were within the prescribed safe limits. Our finding suggests that Nematalosa nasus can be used as biomonitor species for petroleum hydrocarbon contamination status for this ecosystem and also continuous pollution monitoring programs must be conducted by the concerned authorities to safeguard this important aquatic ecosystem.
摘要：
来自亚洲最大的微咸水泻湖的重要商业鱼类和虾类中的石油碳氢化合物（PHCs）残留物，Chilika和他们的饮食风险因素，如生物积累因子(BAF)，调查了估计的饮食摄入量（EDI）和暴露风险指数（ERI）。水样中的PHCs在2.21至9.41μg/l的范围内；而在生物体中，PHCs在0.74至3.16μg/g（湿重）之间变化。在Etroplussuratensis（0.74±0.12；粗脂肪0.57％）和Nematalosa鼻（3.16±0.12；粗脂肪6.43％）中观察到最低和最高的PHCs浓度。从人类健康风险的角度来看，计算出的BAF，EDI,ERI在规定的安全限度内。我们的发现表明，Nematalosanasus可以用作该生态系统的石油烃污染状况的生物监测物种，有关当局还必须进行连续的污染监测计划，以保护这一重要的水生生态系统。
