Xylem features detrending methods matter: A case study on earlywood vessels of Fraxinus mandshurica
文献类型：期刊论文
| 作者 | Chen, Liuting; Zhu, Liangjun; Liu, Shuguang; Lei, Pifeng; Yuan, Danyang; Li, Zongshan; Wang, Xiaochun |
| 刊名 | ECOLOGICAL INDICATORS
 |
| 出版日期 | 2021 |
| 卷号 | 157页码:- |
| 关键词 | Cl-PFESAs Legacy PFASs Human exposure Exposure pathways |
| ISSN号 | 0160-4120 |
| 英文摘要 | Exposure to per- and polyfluoroalkyl substances (PFASs) has raised significant public health concerns due to their persistence and toxicity in the human body. Here, we aimed to investigate the characteristics of exposure to chlorinated polyfluoroalkyl ether sulfonic acids (Cl-PFESAs) and legacy PFASs and the relative contribution from different external pathways to human exposure. Three Cl-PFESAs and fourteen legacy PFASs were detected in human serum, fish, indoor dust and drinking water collected from Shijiazhuang, China. Results showed that 6:2 Cl-PFESA was the third most predominant compound, with an average concentration of 2.70 ng/mL in serum, which was lower than those of perfluorooctane sulfonate (PFOS) and perfluorooctane acid (PFOA) (14.79 and 4.91 ng/mL). The estimated daily intake of 6:2 Cl-PFESA via dust ingestion (mean: 0.008 ng/kg bw/day) was found to be highest among all detected PFASs, while the highest value via fish and drinking water was found for PFOS and PFOA (0.438-9.799 and 0.034-0.155 ng/kg bw/day), respectively. The similar composition of PFASs between serum and fish suggests that fish consumption is a major contributor to human exposure to PFASs. However, the increasing ratios of EDIindoor dust/EDIfish for PFOS, PFOA and 6:2 Cl-PFESA indicated that the contribution of dust ingestion for PFASs, especially 6:2 Cl-PFESA, could not be ignored. The modeled serum concentrations of 6:2 Cl-PFESA higher than its observed levels hint at its gradually increasing exposure levels in the general population. Combined with the lower modeled levels of PFOS than the observed levels, the substituent with 6:2 Cl-PFESA for PFOS is obvious in China. Therefore, further studies on contributions from more detailed external sources and risk assessments of Cl-PFESAs are recommended, especially for some vulnerable subpopulations, considering their widespread exposure and similar environmental behaviors compared with those of their predecessors. |
| 源URL | [https://ir.rcees.ac.cn/handle/311016/46776]  |
| 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.Cent South Univ Forestry & Technol, Coll Life Sci & Technol, Natl Engn Lab Appl Technol Forestry & Ecol South, Changsha 410004, Peoples R China 2.Northeast Forestry Univ, Ctr Ecol Res, Sch Forestry, Harbin 150040, Peoples R China 3.Northeast Forestry Univ, Key Lab Sustainable Forest Ecosyst Management, Sch Forestry, Minist Educ, Harbin 150040, Peoples R China 4.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 | Chen, Liuting,Zhu, Liangjun,Liu, Shuguang,et al. Xylem features detrending methods matter: A case study on earlywood vessels of Fraxinus mandshurica[J]. ECOLOGICAL INDICATORS,2021,157:-. |
| APA | Chen, Liuting.,Zhu, Liangjun.,Liu, Shuguang.,Lei, Pifeng.,Yuan, Danyang.,...&Wang, Xiaochun.(2021).Xylem features detrending methods matter: A case study on earlywood vessels of Fraxinus mandshurica.ECOLOGICAL INDICATORS,157,-. |
| MLA | Chen, Liuting,et al."Xylem features detrending methods matter: A case study on earlywood vessels of Fraxinus mandshurica".ECOLOGICAL INDICATORS 157(2021):-. |
入库方式： OAI收割
来源：生态环境研究中心
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。