Inconsistent changes in NPP and LAI determined from the parabolic LAI versus NPP relationship
文献类型：期刊论文
| 作者 | Pan, Ning; Wang, Shuai; Wei, Fangli ; Shen, Miaogen; Fu, Bojie
|
| 刊名 | ECOLOGICAL INDICATORS
 |
| 出版日期 | 2021 |
| 卷号 | 282页码:- |
| 关键词 | Ocean sediments PFAS HFPO-DA Spatial distribution |
| ISSN号 | 0045-6535 |
| 英文摘要 | The Yellow Sea (YS), the East China Sea (ECS) and their coastal areas have undergone rapid urbanization and industrialization. These areas are important sinks for many persistent organic pollutants. In this study, the concentration of legacy and emerging per- and polyfluoroalkyl substances (PFAS) in marine sediments from the YS and ECS were investigated. Nineteen PFAS were identified, ranging in concentration from 0.21 ng/g to 4.74 ng/g (mean: 1.60 ng/g). Legacy long-chain PFAS [e.g., perfluorooctanoic acid (PFOA), perfluorononanoic acid (PFNA), and perfluorooctane sulfonate (PFOS)] were the dominant contaminants. Alternative PFAS such as 6:2 chlorinated polyfluorinated ether sulfonate (6:2 Cl-PFESA) and 2,3,3,3-tetrafluoro-2-(1,1,2,2,3,3,3-heptafluoropropoxy) propanoic acid (HFPO-DA) were identified within the detection range of 16%-100%. HFPO-DA was measured in all sediments in equivalent levels to PFOS (0.119 ng/g and 0.139 ng/g, respectively). This is the first reported occurrence of perfluoro-1-butanesulfonamide (FBSA) and HFPO-DA in marine sediments, indicating a replacement in the production of PFAS from legacy to emerging ones along with eastern coastal cities of China. The results of the potential source identification demonstrated that metal plating plants, textile treatments, fluoropolymer products, food packaging, and the degradation of volatile precursor substances were the main sources of PFAS in the ECS and YS. The environmental risk assessment based on the risk quotient demonstrated that PFOA and PFOS in the ECS and YS may present a low to medium risk at most sampling points. |
| 源URL | [https://ir.rcees.ac.cn/handle/311016/46739]  |
| 专题 | 生态环境研究中心_城市与区域生态国家重点实验室 |
| 作者单位 | 1.Hebei Normal Univ, Coll Resources & Environm Sci, Shijiazhuang 050024, Hebei, Peoples R China 2.Beijing Normal Univ, Fac Geog Sci, State Key Lab Earth Surface Proc & Resource Ecol, Beijing 100875, Peoples R China 3.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, Beijing 100085, Peoples R China |
| 推荐引用方式 GB/T 7714 | Pan, Ning,Wang, Shuai,Wei, Fangli,et al. Inconsistent changes in NPP and LAI determined from the parabolic LAI versus NPP relationship[J]. ECOLOGICAL INDICATORS,2021,282:-. |
| APA | Pan, Ning,Wang, Shuai,Wei, Fangli,Shen, Miaogen,&Fu, Bojie.(2021).Inconsistent changes in NPP and LAI determined from the parabolic LAI versus NPP relationship.ECOLOGICAL INDICATORS,282,-. |
| MLA | Pan, Ning,et al."Inconsistent changes in NPP and LAI determined from the parabolic LAI versus NPP relationship".ECOLOGICAL INDICATORS 282(2021):-. |
入库方式： OAI收割
来源：生态环境研究中心
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