已入深夜,您辛苦了!由于当前在线用户较少,发布求助请尽量完整地填写文献信息,科研通机器人24小时在线,伴您度过漫漫科研夜!祝你早点完成任务,早点休息,好梦!

Legacy and emerging per- and polyfluoroalkyl substances (PFASs) in multi-media around a landfill in China: Implications for the usage of PFASs alternatives

全氟辛酸 全氟辛烷 地下水 环境化学 沉积物 地表水 化学 环境科学 污染 碳链 环境工程 磺酸盐 地质学 有机化学 生态学 地貌学 岩土工程 生物
作者
Chang Xu,Zhaoyang Liu,Xin Song,Xiaoyan Ding,Da Ding
出处
期刊:Science of The Total Environment [Elsevier BV]
卷期号:751: 141767-141767 被引量:57
标识
DOI:10.1016/j.scitotenv.2020.141767
摘要

To date, per- and polyfluoroalkyl substances (PFASs) in environmental media surrounding landfills have not attracted much attention. In this study, six legacy PFASs, six short-chain analogues and five emerging alternatives were investigated in groundwater, surface water and sediment samples taken in the vicinity of a valley-type landfill, which had been in operation for over 20 years. Total PFAS concentrations of 110-236 ng/L, 17.3-163 ng/L and 7.91-164 ng/g dw were detected in the surface water, groundwater and sediment samples, respectively. Overall, perfluorooctanoic acid (PFOA) was the dominant PFAS in surface water, but elevated concentrations of perfluorobutanoic acid (PFBA) and perfluoropentanoic acid (PFPeA) were detected in the surface water samples taken adjacent to the landfill, suggesting that the landfill contributed to these compounds. PFBA was the dominant PFAS in the groundwater and sediments. The concentrations of long-chain perfluoroalkyl carboxylic acids (PFCAs) (C8-C12) in the sediment samples correlated significantly with the TOC, Al2O3 and Fe2O3 contents. The partitioning behaviors of PFCAs in the water-sediment system varied depending on the CF2 moiety units. For the long-chain PFCAs, positive correlations between the average LogKd and the number of CF2 moieties were found to be statistically significant, whereas negative correlations were observed for the short-chain PFCAs (C4-C7). The ratios of short-chain analogues and emerging alternatives versus their respective legacy PFOA and perfluorooctane sulfonate (PFOS) in surface water suggested an increasing trend of short-chain analogues, such as PFBA. The potential health risks of PFOS and PFOA, determined by calculating the estimated daily intake (EDI), were found to be negligible via the drinking groundwater exposure pathway, but more comprehensive studies on the human health risks of PFASs from landfills are essential.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
景行行止完成签到 ,获得积分10
1秒前
我睡觉的时候不困完成签到 ,获得积分10
3秒前
学者风范完成签到 ,获得积分10
3秒前
4秒前
隐形曼青应助galaxy采纳,获得10
5秒前
心灵美的石头完成签到,获得积分10
7秒前
yuqinghui98完成签到 ,获得积分10
7秒前
7秒前
鲤鱼越越完成签到 ,获得积分10
8秒前
进取拼搏发布了新的文献求助30
9秒前
wzh完成签到 ,获得积分10
10秒前
共享精神应助小树采纳,获得10
12秒前
qq完成签到 ,获得积分10
12秒前
13秒前
彩色亿先完成签到 ,获得积分10
14秒前
16秒前
Willy完成签到,获得积分10
17秒前
galaxy发布了新的文献求助10
18秒前
只如初完成签到 ,获得积分10
19秒前
20秒前
深情安青应助张琳琳采纳,获得10
20秒前
huai完成签到,获得积分10
21秒前
Willy发布了新的文献求助10
22秒前
i哦票完成签到 ,获得积分10
23秒前
YOLO完成签到 ,获得积分10
23秒前
贪玩小小完成签到 ,获得积分10
24秒前
你学习了吗我学不了一点完成签到 ,获得积分10
24秒前
cccr02发布了新的文献求助10
25秒前
小橙同学完成签到 ,获得积分10
26秒前
李昆朋完成签到,获得积分10
29秒前
方继潘完成签到,获得积分10
29秒前
啥也不会完成签到 ,获得积分10
29秒前
和谐的忆之完成签到,获得积分10
29秒前
www发布了新的文献求助10
30秒前
YYYCCCCC完成签到,获得积分10
31秒前
Silence完成签到 ,获得积分10
33秒前
小秋发布了新的文献求助10
33秒前
找文献完成签到 ,获得积分10
35秒前
义气幼珊完成签到 ,获得积分10
36秒前
卢建军应助ergou采纳,获得50
40秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
Immigrant Incorporation in East Asian Democracies 600
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
Picture Books with Same-sex Parented Families: Unintentional Censorship 500
Nucleophilic substitution in azasydnone-modified dinitroanisoles 500
不知道标题是什么 500
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3972572
求助须知:如何正确求助?哪些是违规求助? 3516969
关于积分的说明 11185760
捐赠科研通 3252397
什么是DOI,文献DOI怎么找? 1796442
邀请新用户注册赠送积分活动 876380
科研通“疑难数据库(出版商)”最低求助积分说明 805572