长江口-杭州湾沉积物中多环芳烃及其衍生物的赋存特征及来源解析  

Multi-media distribution,pollution mode and source of polycyclic aromatic hydrocarbons and their derivatives in the Yangtze Estuary and Hangzhou Bay

作　　者：侯旭林 姚文君[2] 张新欣 王瑶 丁小璘 李文聪 张煜珩 马新东[2] HOU Xulin;YAO Wenjun;ZHANG Xinxin;WANG Yao;DING Xiaolin;LI Wencong;ZHANG Yuheng;MA Xindong(College of Light Industry and Chemical Engineering,Dalian Polytechnic University,Dalian 116034,China;State Environmental Protection Key Laboratory of Coastal Ecosystem,National Marine Environmental Monitoring Center,Dalian 116023,China;School of Environmental Science and Engineering,Dalian Maritime University,Dalian 116023,China;College of Marine Ecology and Environment,Shanghai Ocean University,Shanghai,200090,China)

机构地区：[1]大连工业大学轻工与化学工程学院,辽宁大连116034 [2]国家海洋环境监测中心、国家海洋局近岸海域生态环境重点实验室,辽宁大连116023 [3]大连海事大学环境科学与工程学院,辽宁大连116023 [4]上海海洋大学海洋生态与环境学院,上海200090

出　　处：《海洋环境科学》2024年第4期543-550,共8页Marine Environmental Science

基　　金：国家重点研发青年科学家项目(2022YFC3105500);国家自然科学基金面上项目(41201491)。

摘　　要：多环芳烃是一类典型的持久性有毒物质,而有关其衍生物的报道目前仍十分有限。该研究对长江口-杭州湾及其近岸海域表层沉积物中16种母体多环芳烃(parent polycyclic aromatic hydrocarbons,P-PAHs)、12种烷基多环芳烃(alkyl polycyclic aromatic hydrocarbons,A-PAHs)以及10种硝基多环芳烃(nitro polycyclic aromatic hydrocarbons,N-PAHs)进行了定量分析。结果表明,表层沉积物中16种母体多环芳烃(∑_(16)P-PAHs)、12种烷基多环芳烃(∑_(12)A-PAHs)和10种硝基多环芳烃(∑_(10)NPAHs)的平均浓度分别为108 ng/g(dw,干重)、24.2 ng/g(dw)和7.02 ng/g(dw);柱状沉积物三者的平均浓度范围分别为28.9~252 ng/g(dw)、8.13~28.5 ng/g(dw)和2.94~13.5 ng/g(dw),其中∑_(16)P-PAHs和∑_(12)A-PAHs随着年代增加整体呈现上升趋势。PAHs及其衍生物的污染模式以及特征比值结果表明,长江口及近岸海域表层沉积物中的PAHs主要来自化石燃烧,但周边的港口和船运业务,一定程度上可能增加石油类物质泄漏所带来的环境风险。Polycyclic aromatic hydrocarbons(PAHs)are a typical class of persistent toxic substances,and the reports on their derivatives are still limited.In this study,16 parent polycyclic aromatic hydrocarbons(P-PAHs),12 alkyl polycyclic aromatic hydrocarbons(A-PAHs)and 10 nitro polycyclic aromatic hydrocarbons(N-PAHs)were observed in the surface sediments of the Yangtze River estuary-Hangzhou Bay and its coastal waters hydrocarbons(N-PAHs).The results showed that the average concentrations of 16 parent polycyclic aromatic hydrocarbons(∑_(16)P-PAHs),12 alkyl polycyclic aromatic hydrocarbons(∑_(12)A-PAHs)and 10 nitropolycyclic aromatic hydrocarbons(∑_(10)N-PAHs)in the surface sediments were 108 ng/g(dw,dry weight),24.2 ng/g(dw)and 7.02 ng/g(dw),respectively.The average concentrations of columnar sediments ranged from 28.9-252 ng/g(dw),8.13-28.5 ng/g(dw)and 2.94-13.5 ng/g(dw),respectively,and the∑_(16)P-PAHs and∑_(12)A-PAHs showed an increasing trend with the increase of age.The pollution patterns and characteristic ratios of PAHs and their derivatives show that the PAHs in the surface sediments of the Yangtze River estuary and coastal waters mainly come from fossil combustion,but the surrounding ports and shipping operations may increase the environmental risk caused by petroleum leakage to a certain extent.

关 键 词：多环芳烃 烷基多环芳烃 硝基多环芳烃 长江口-杭州湾 来源分析 

分 类 号：P736[天文地球—海洋地质] X142[天文地球—海洋科学]