中国海洋大学学报（自然科学版）2025，Vol.55Issue(3)：55-69,15.DOI:10.16441/j.cnki.hdxb.20240052
胶州湾入海河流和排污口全氟多氟化合物的污染状况及来源解析
Pollution Status and Source Analysis of Per-and Polyfluoroalkyl Substances in Rivers and Sewage Outlets of Jiaozhou Bay
摘要
Abstract
Per-and polyfluoroalkyl(PFASs)substances are a new class of pollutants with environmen-tal persistence and high bioconcentration.The distribution and risk of PFASs in the environment are of great concern in the Bay region,where human activities are intensive.In this study,samples were col-lected from seven rivers and four sewage outlets in Jiaozhou Bay(JZB)in August 2022(wet season)and April 2023(dry season),respectively.The composition and content of PFASs in the dissolved and par-ticulates were determined by high-performance liquid chromatography-tandem mass spectrometry.The results showed that 18 and 16 PFASs were detected in the dissolved during the wet and dry seasons,re-spectively,with perfluorinated carboxylic acids(PFCAs)as the main components.There were 23 and 25 PFASs detected in the particulate during the wet and dry seasons,respectively,with perfluorinated sulfonic acids(PFSAs)and emerging alternatives as the main components.In addition,HFPO-DA and 6∶2 FTSA were detected in both media,suggesting that the rivers and wastewater around the bay were generally contaminated with PFASs.The mean concentrations of total dissolved and particulate PFASs(ΣPFASs)in the rivers and outfalls around the bay were lower in the wet period than in the dry period,indicated that the runoff from the rivers into the sea had a dilution effect on PF AS.The particle state-dissolved state partition coefficients of PFASs ranged from 2.05 to 4.10,which increased with the in-crease of carbon chain length,and the longer the carbon chains of PFASs,the more hydrophobic they were,and the more likely they were to be adsorbed onto particulate matter.The ΣPFASs flux into JZB reached 7.40 kg/d during the wet season,much higher than the 1.89 kg/d during the dry season.The Dagu River had the highest percentage of fluxes into the sea,reaching 81.2％and 83.6％in the wet and dry seasons,respectively.Based on the characteristics of the PFASs ratio and the results of principal component analysis,the PFASs mainly originated from point source discharges of fluoride manufactu-ring,fire-fighting foams,paper packaging,printing,etc,and the the atmospheric deposition has a small impact on the area.The key polluted blocks were located in the Loushan River,Lianwan River,and Dagu River.Determining ecological risk based on risk quotient,the PFASs without ecological risk at all stations during the wet season,low risk of PFOA at Lianwan River and Loushan River during the dry season,in addition at the rest of the stations without ecological risk.关键词
胶州湾/河流和排污口/全氟多氟化合物/污染状况/通量/来源解析Key words
Jiaozhou Bay/rivers and sewage outlets/per-and poly-fluoroalkyl substances/pollution characteristics/fluxes/source analysis分类
海洋学引用本文复制引用
王瑶瑶,李俊龙,李凤超,李宏观,张明政,王晓雪,罗忻,梁生康..胶州湾入海河流和排污口全氟多氟化合物的污染状况及来源解析[J].中国海洋大学学报（自然科学版）,2025,55(3):55-69,15.基金项目
崂山实验室"十四五"重大项目(LSKJ202203901) （LSKJ202203901）
中央高校基本科研业务费专项(202262009)资助Supported by Laoshan Laboratory"14th Five-Year Plan"Major Project(LSKJ202203901) （202262009）
the Special Fund for Basic Research Opera-tions of Central Universities(202262009) （202262009）
