Department of Food Science and Technology, Michael Okpara University of Agriculture, Umudike, Abia State, Nigeria.
College of Applied Food Sciences and Tourism, Michael Okpara University of Agriculture, Umudike, Abia State, Nigeria.
Environ Sci Process Impacts. 2021 Nov 17;23(11):1803-1814. doi: 10.1039/d1em00249j.
The origin, tissue concentration, and health risk of polycyclic aromatic hydrocarbons (PAHs) contaminants in three economically important species of seafood, including catfish (), prawns (), and periwinkles () from the crude oil-impacted Niger Delta region, were investigated. The concentrations of PAHs were measured by coupled gas chromatography-mass spectrometry after repeated extraction by ultrasonication in hexane and cleaning up in silica gel. The origin of PAHs was deduced using established mathematical protocols. Health risk from the consumption of contaminated seafood was evaluated for 60 kg bodyweight individuals at a fish consumption rate of 36.94 g per person per day. Different tissue concentrations of PAHs residues at low, moderate, and chronic levels were revealed. Mean total PAHs varied from 4.55 to 6.36 mg kg in catfish, 4.61 to 7.75 mg kg in prawns, and 4.91 to 6.14 mg kg in periwinkles. The tissue concentrations were high above PM, enough to suspect PAHs-related health risk, especially among residents who consume a large quantity of seafood. Carcinogenic PAHs index, benzo[]pyrene, varied from below instrument detection (<0.01) to 0.29 mg kg. The estimated carcinogenic potency equivalent concentrations (PEC) of PAH varied from 0.653 to 2.153 above the screening value (SV), 0.01624 in the three species investigated. Mathematical evaluation and dominant tissue concentration of high molecular weight PAHs in all the seafood investigated showed pyrogenic origin of PAHs.
本研究调查了尼日尔三角洲受原油影响地区三种经济重要的海鲜物种（鲶鱼（）、虾（）和海蜗牛（））中多环芳烃（PAHs）污染物的来源、组织浓度和健康风险。通过超声辅助正己烷重复提取和硅胶净化后，采用气相色谱-质谱联用技术测定了 PAHs 的浓度。利用已建立的数学方案推断了 PAHs 的来源。对于体重为 60 公斤、每天食用 36.94 克鱼的个体，评估了食用受污染海鲜的健康风险。揭示了不同组织中低、中、慢性水平的 PAHs 残留的浓度。鲶鱼中总 PAHs 平均值为 4.55-6.36mg/kg，虾中为 4.61-7.75mg/kg，海蜗牛中为 4.91-6.14mg/kg。组织浓度高于 PM，足以怀疑与 PAHs 相关的健康风险，尤其是在大量食用海鲜的居民中。致癌性多环芳烃指数苯并[a]芘在 0.01 以下至 0.29mg/kg 之间变化。PAH 的估计致癌效力等效浓度（PEC）在筛选值（SV）之上，在所研究的三种物种中分别为 0.653-2.153。所有调查海鲜中高分子量 PAHs 的数学评价和主要组织浓度表明 PAHs 来自热解。
