| 骆马湖表层水和沉积物中全氟化合物赋存特征、来源及健康风险评估 |
| 摘要点击 3406 全文点击 1097 投稿时间：2021-08-31 修订日期：2021-12-18 |
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| 中文关键词 骆马湖 全氟化合物(PFASs) 赋存特征 来源解析 健康风险评估 |
| 英文关键词 Luoma Lake perlyfluoroalkyl substances (PFASs) occurrence characteristics source analysis health risk assessment |
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| 中文摘要 |
| 通过对骆马湖表层水和沉积物的调查检测，分析了两类介质中全氟化合物（PFASs）的组分结构和赋存特征，并运用主成分分析法对表层水中此类物质的来源进行了解析，运用风险商法评估了此类物质的潜在健康风险，结果表明，骆马湖表层沉积物中总计检出14种PFASs，而其表层水中较之前者多检出1种（PFTeA）；表层水中ρ（ΣPFASs）范围为46.09~120.34ng ·L-1，沉积物中ω（ΣPFASs）范围为2.22~9.55ng ·g-1；表层水中质量分数最高的为PFPeA，为38%，沉积物中质量分数最高的为PFBA，为61%，骆马湖多介质中PFASs组分均以短链物质为主；骆马湖表层水中PFASs的高浓度区域集中分布在北部河流入湖口，其浓度呈现由北向南递减的趋势，沉积物中PFASs的高含量区域则向南迁移；骆马湖沉积物中的ΣPFASs、PFBA和PFOS的分布情况与沉积物中TOC含量有关；主成分分析表明骆马湖表层水中PFASs主要来自纺织品阻燃、橡胶品的乳化、食品包装过程和纸类表面处理，金属电镀行业，皮革和纺织品制造行业；骆马湖表层水中PFASs处于较低健康风险水平. |
| 英文摘要 |
| Through the investigation and detection of the surface water and sediments of Luoma Lake, the structure and occurrence characteristics of PFASs (perlyfluoroalkyl substances) in the two types of media were analyzed, and the principal component analysis method was used to analyze the characteristics of such substances in the surface water. The source was analyzed, and the potential health risks of such substances were evaluated using the risk quotient method. The results showed that a total of 13 PFASs were detected in the surface sediments of Luoma Lake, and one more species was detected in the surface water (PFTeA); ρ(ΣPFASs) in the surface water ranged from 46.09 to 120.34 ng·L-1, and ω(ΣPFASs) in sediments ranged from 2.22 to 9.55 ng·g-1. PFPeA was the major component in surface water, and the mass fraction of PFPeA was 38%. PFBA was the major component in sediment, and the mass fraction of PFPeA was 61%. The multi-media PFASs in Luoma Lake were mainly short-chain substances; the high concentration area of PFASs in the surface water of Luoma Lake was concentrated and distributed at the mouth of the northern rivers. Its concentration showed a decreasing trend from north to south, and the content of PFASs in the sediments showed a decreasing trend from southwest to northeast. The distribution of ΣPFASs, PFBA, and PFOS in the sediments of Luoma Lake and the TOC content in the sediment were related; the principal component analysis showed that the PFASs in the surface water of Luoma Lake were mainly from textile flame retardant, rubber product emulsification, food packaging processes and paper surface treatment industries, the metal electroplating industry, and leather and textile manufacturing industries. PFASs in the surface water of Luoma Lake were at a relatively low health risk level. |
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