气候变化领域集成服务门户(CCPortal): Perfluoroalkyl acids in surface sediments of the German Bight in 2011

CCPortal

DOI	https://doi.org/10.1594/PANGAEA.880151
	Perfluoroalkyl acids in surface sediments of the German Bight in 2011
	Zhao; Zhen; Xie; Zhiyong; Tang; Jianhui; Zhang; Gan; Ebinghaus; Ralf
发布日期	2015-08-29
数据集类型	dataset
英文简介	Perfluoroalkyl acids (PFAAs) have been determined in the environment globally. However, studies on the occurrence of PFAAs in marine sediment remain limited. In this study, 16 PFAAs are investigated in surface sediments from the German Bight, which provided a good overview of the spatial distribution. The concentrations of Sum PFAAs ranged from 0.056 to 7.4 ng/g dry weight. The highest concentration was found at the estuary of the River Ems, which might be the result of local discharge source. Perfluorooctane sulfonic acid (PFOS) was the dominant compound and the enrichment of PFOS in sediment might be strongly related to the compound structure itself. The geographical condition of the German Bight influenced the movement of water and sediment, resulting in complex distribution. Following normalization according to total organic carbon (TOC) content, PFAA distributions showed a different picture. Significant linear relationships were found between total PFAA concentrations and TOC (R**2 = 0.50, p b 0.01). Compared with a previous study conducted in the same area, a declining trend was presented for the concentrations of PFOS and perfluorooctanoic acid (PFOA). Compound structure, geographical condition, and organic carbon in the sediment influence the distribution of PFAAs in the German Bight. Environmental risk assessment indicated that the risk from PFOA is negligible, whereas PFOS in marine sediment may present a risk for benthic organisms in the German Bight.
空间范围	Median Latitude: 53.987512 * Median Longitude: 8.382744 * South-bound Latitude: 53.398518 * West-bound Longitude: 7.048566 * North-bound Latitude: 54.782162 * East-bound Longitude: 9.794550
时间范围	2011-02-17T00:00:00 - 2011-05-05T00:00:00
语种	英语
国家	国际
学科大类	气候变化
学科子类	气候变化
文献类型	数据集
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/216436
推荐引用方式 GB/T 7714	Zhao,Zhen,Xie,et al. Perfluoroalkyl acids in surface sediments of the German Bight in 2011.2015-08-29.https://doi.org/10.1594/PANGAEA.880151.