海南省昌化江河口海域生物体中多环芳烃污染特征、来源解析及健康风险评价  

Characteristics,Source Analysis,and Health Risk Assessment of Polycyclic Aromatic Hydrocarbons(PAHs)Pollution in Marine Organisms from Estuaries of Changhua River in Hainan Province

作　　者：汪慧娟 旷泽行 周贤 覃晓青 黄洪辉[2] WANG Hui-juan;KUANG Ze-xing;ZHOU Xian;QIN Xiao-qing;HUANG Hong-hui(College of Fisheries and Life Science,Shanghai Ocean University,Shanghai 201306,China;Guangdong Provincial Key Laboratory of Fishery Ecology and Environment,South China Sea Fisheries Research Institute,Chinese Academy of Fishery Sciences,Guangzhou 510300,China)

机构地区：[1]上海海洋大学水产与生命学院,上海201306 [2]中国水产科学研究院南海水产研究所,广东省渔业生态环境重点实验室,广州510300

出　　处：《环境科学》2020年第6期2942-2950,共9页Environmental Science

基　　金：国家重点研发计划项目(2018YFC1407501);农业部财政重大专项(NFZX2017)。

摘　　要：为了研究海南昌化江典型海岛型河口海域生物体多环芳烃(PAHs)的污染状况,应用气相色谱-质谱法(GC-MS)分析了33种海洋生物体内16种优先控制PAHs的含量,并探讨了PAHs组分、来源和潜在的食用风险.结果表明,底层鱼类(湿重,下同)、甲壳类和中上层鱼类生物体PAHs总量范围分别为5.52~787.98、12.18~154.64和10.20~199.79 ng·g^-1,平均含量分别为83.21、64.72和89.48 ng·g^-1.各类生物体中PAHs含量存在一定的差异,平均含量由高到低依次为:中上层鱼类、底层鱼类和甲壳类.与国内外其他地区相比,昌化江河口海域生物体PAHs污染处于中低水平.来源分析结果显示,33种海洋生物体中PAHs主要来源于燃烧源(石油燃烧和生物质燃烧)和石油源,且底层生物受到燃烧源影响较大,而中上层生物受到石油源影响较大.风险评价结果显示苯并[a]芘(BaP)含量处于欧盟规定的限值范围,昌化江河口海域大部分生物处于食用安全范围内,但长期食用这些海产品可能会有潜在的健康风险(1.0×10^-5≤ILCR<1.0×10^-4).To assess the contamination by polycyclic aromatic hydrocarbons(PAHs)in organisms in the estuary of Changhua River in Hainan,we determined the content of 16 priority PAHs by gas chromatography and mass spectrometry(GC-MS).The composition,source,and potential edible risk of PAHs were studied.The results showed that the total PAHs of demersal fish(wet weight,same below),crustaceans,and pelagic fish were 5.52-787.98,12.18-154.64,and 10.20-199.79 ng·g^-1,respectively,and the average contents were 83.21,64.72,and 89.48 ng·g^-1,respectively.There were some differences in the content of PAHs in various organisms.The average content followed the order of pelagic fish>demersal fish>crustaceans.Compared with other areas in the country and abroad,the content of marine organisms’PAHs in the estuary of the Changhua River was above the medium level.The result of isomer characteristic ratio showed that the PAHs of 33 organisms mainly came from the combustion sources(petroleum combustion and biomass combustion)and petroleum sources.Moreover,demersal fish were greatly affected by combustion sources,while pelagic fish were greatly affected by petroleum sources.Human risk assessment indicated that the content of benzopyrene(BaP)was within the limits set by the European Union.Most of the organisms in the estuary of Changhua River were within the safe range of consumption,but the long-term consumption of these seafoods may pose a potential health risk(1.0×10^-5≤ILCR<1.0×10^-4).

关 键 词：多环芳烃(PAHs) 风险评价 海洋生物 河口海域 昌化江 

分 类 号：X508[环境科学与工程—环境工程]