中国海洋大学学报（自然科学版）2025，Vol.55Issue(5)：100-112,13.DOI:10.16441/j.cnki.hdxb.20240088
胶州湾不同环境介质中多环芳烃的分布、来源和生态风险评价
Distribution,Sources and Ecological Risk Assessment of Polycyclic Aromatic Hydrocarbons(PAHs)in Different Environmental Media of Jiaozhou Bay
摘要
Abstract
Polycyclic Aromatic Hydrocarbons(PAHs)are a class of persistent organic pollutants(POPs)with carcinogenic,teratogenic and mutagenic.Under the background of high-intensity human activities,the distribution,sources and risk assessment of PAHs in the offshore are of great concern.Based on two surveys conducted in August 2022(wet season)and April 2023(dry season)in Jiaozhou Bay,this paper analyzes the pollution status,sources and distribution behaviors amongdifferent media in surface seawater(DPAHs),PAHs in suspended particulate matter(PPAHs)and PAHs in surface sediment(SPAHs),and assesses the ecological risk of PAHs.During the wet season,the average con-centrations of DPAHs,PPAHs and SPAHs are(124.7±19.7),(345.8±141.7)and(634.4±121.9)ng·g-1dw,respectively.The mean concentrations of DPAHs and PPAHs are(622.52±215.8)and(239.6±313.9)ng·L-1 in the dry season,respectively.DPAHs are dominated by 3 rings in the wet season,with an average proportion of 28.1％±4.5％ and are dominated by 4 rings in the dry season,with an average proportion of 42.9％±5.3％.In both the wet and dry seasons,PPAHs are dominated by 3 rings,with an average proportion of 40.49％±6.63％and 42.23％±10.42％,respectively.SPAHs are dominated by 2-3 rings,with an average percentage of 67.5％±7.0％.DPAHs and PPAHs show a significant negative correlation with salinity,indicating that land-based input is an im-portant source of PAHs in waterof Jiaozhou Bay.The significant positive correlation between PPAHs and POC,2 rings SPAHs and TOC in the wet season,indicating that the content of organic matter is the important factors influencing the distribution of PPAHs and SPAHs.The logarithm of the normal-ized particulate-water organic carbon coefficients(lgKOC(SPM-W))for the 16 PAHs inthewetanddryseason-sare mostly lower than the lower limit of the predictions of the classical equilibrium partitioning model and the slopes with respect to the logarithm of the partition coefficients of the octanol-water(lgKOW)are less than 1,suggesting that the particulate matter of the Jiaozhou Bay has a poor affinity for PAHs.The results of PAHs characterization ratio analysis indicatethat oil,coal,and biomass combustion are the main sources of PAHsin Jiaozhou Bay.DPAHs are low risk in the wet season and medium-high risk in the dry season.PPAHs are medium-low risk during both the wet and dry seasons,and SPAHs are medium-high risk.关键词
多环芳烃/环境介质/来源解析/生态风险/胶州湾Key words
polycyclic aromatic hydrocarbons/environmental media/source analysis/ecological risk/Jiaozhou Bay分类
海洋科学引用本文复制引用
王晓雪,曹亚俐,金红,梁星祖,王瑶瑶,王林鑫,李宏观,叶曦雯,梁生康..胶州湾不同环境介质中多环芳烃的分布、来源和生态风险评价[J].中国海洋大学学报（自然科学版）,2025,55(5):100-112,13.基金项目
崂山实验室"十四五"重大项目:海洋环境新污染物防治与水环境安全项目(LSKJ202203901) （LSKJ202203901）
中央高校基本科研业务费专项(202262009,202464007)资助Supported by the Laoshan Laboratory"14th Five-Year Plan"Major Project:Prevention and Control of New Pollutants in Marine En-vironment and Safety of Water Environment(LSKJ202203901) （202262009,202464007）
the Special Fund for Basic Research Operations of Central Universi-ties(202262009,202464007) （202262009,202464007）
