Occurrence and prevalence of per- and polyfluoroalkyl substances in the sediment pore water of mariculture sites: Novel findings of PFASs from the Bohai and Yellow Seas using a newly established analytical method,Journal of Hazardous Materials

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Occurrence and prevalence of per- and polyfluoroalkyl substances in the sediment pore water of mariculture sites: Novel findings of PFASs from the Bohai and Yellow Seas using a newly established analytical method
Journal of Hazardous Materials ( IF 12.2 ) Pub Date : 2024-04-10 , DOI: 10.1016/j.jhazmat.2024.134256
Nan Shen ₁ , Jiale Tang ₂ , Junhui Chen ₂ , Cancan Sheng ₁ , Tongzhu Han ₂ , Xiuping He ₂ , Chenguang Liu ₂ , Chao Han ₃ , Xianguo Li ₄

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A new method for the determination of 26 legacy and emerging per- and polyfluoroalkyl substances (PFASs) in marine sediment pore water was developed using online solid phase extraction coupled with liquid chromatography-tandem mass spectrometry. The proposed method requires only about 1 mL of pore water samples. Satisfactory recoveries of most target PFASs (83.55–125.30 %) were achieved, with good precision (RSD of 1.09–16.53 %), linearity ( ≥ 0.990), and sensitivity (MDLs: 0.05 ng/L–5.00 ng/L for most PFASs). Subsequently, the method was applied to determine PFASs in the sediment pore water of five mariculture bays in the Bohai and Yellow Seas of China for the first time. Fifteen PFASs were detected with total concentrations ranging from 150.23 ng/L to 1838.48 ng/L (mean = 636.80 ng/L). The ∑PFASs and PFOA concentrations in sediment pore water were remarkably higher than those in surface seawater (tens of ng/L), indicating that the potential toxic effect of PFASs on benthic organisms may be underestimated. PFPeA was mainly distributed in pore water, and the partition of PFHpA (50.99 %) and PFOA (49.01 %) was almost equal in the solid and liquid phases. The proportions of all other PFASs partitioned in marine sediments were significantly higher than those in pore water.

中文翻译：

海水养殖场沉积物孔隙水中全氟烷基和多氟烷基物质的出现和流行：使用新建立的分析方法对渤海和黄海的 PFAS 进行新发现

采用在线固相萃取结合液相色谱-串联质谱法开发了一种测定海洋沉积物孔隙水中 26 种遗留和新兴全氟烷基物质和多氟烷基物质 (PFAS) 的新方法。该方法仅需要约 1 mL 的孔隙水样品。大多数目标 PFAS 获得了令人满意的回收率 (83.55–125.30 %)，具有良好的精密度（RSD 为 1.09–16.53 %）、线性 ( ≥ 0.990) 和灵敏度（MDL：大多数 PFAS 为 0.05 ng/L–5.00 ng/L））。随后，首次应用该方法测定了我国渤海和黄海5个海水养殖湾沉积物孔隙水中的PFASs。检测到 15 种 PFAS，总浓度范围为 150.23 ng/L 至 1838.48 ng/L（平均值 = 636.80 ng/L）。沉积物孔隙水中的ΣPFASs和PFOA浓度显着高于表层海水（数十ng/L），表明PFASs对底栖生物的潜在毒性作用可能被低估。 PFPeA主要分布在孔隙水中，PFHpA（50.99%）和PFOA（49.01%）在固相和液相中的分配几乎相等。海洋沉积物中所有其他 PFAS 的比例显着高于孔隙水中的比例。

更新日期：2024-04-10

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