Vertical distribution of perfluoroalkyl substances in water columns around the Japan sea and the Mediterranean Sea
| Autor: | Paul K.S. Lam, Nobuyoshi Yamashita, Eriko Yamazaki, Gert Petrick, Sachi Taniyasu, Toshitaka Gamo, Qi Wang, Xinhong Wang, Yuefei Ruan, Toste Tanhua |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Pollution
Water mass China Environmental Engineering Health Toxicology and Mutagenesis media_common.quotation_subject 0208 environmental biotechnology Taiwan Distribution (economics) 02 engineering and technology 010501 environmental sciences Spatial distribution 01 natural sciences Pacific ocean Water column Mediterranean sea Japan Mediterranean Sea Environmental Chemistry 0105 earth and related environmental sciences media_common Fluorocarbons Pacific Ocean business.industry Public Health Environmental and Occupational Health Water General Medicine General Chemistry 020801 environmental engineering Oceanography Alkanesulfonic Acids Environmental science Caprylates business Surface water Water Pollutants Chemical Environmental Monitoring |
| Zdroj: | Chemosphere. 231 |
| ISSN: | 1879-1298 |
| Popis: | Perfluoroalkyl substances (PFASs) have become an important class of global environmental contaminants, yet their vertical profile in the marine water column is still less understood, especially for the semi-closed seas. In this study, the contamination level and spatial distribution of 8 PFASs were investigated in both surface and vertical water samples from two semi-closed seas, the Japan Sea and the Mediterranean Sea. Similar levels and compositions of PFASs were found between these two seas. The vertical profile of PFASs in the Mediterranean Sea was variable while that was relatively steady in the Japan Sea, probably due to their different pollution sources. The accumulation rate of PFASs from the East China Sea to the Japan Sea was calculated, for which perfluorooctanesulfonic acid and perfluorooctanoic acid were found to have high accumulation potency in both surface and deep water; most of the investigated PFASs were accumulated in the deep water due to the long residence time while they were more likely to escape to the Pacific Ocean in the surface water. This work aimed (i) to study the distribution of PFASs in both surface and vertical water samples in two semi-closed seas, namely the Japan Sea and for the first time the Mediterranean Sea, (ii) to assess the temporal trend in the Japan Sea, and (iii) to firstly investigate the potential transport of PFASs from the East China Sea and Taiwan Strait in order to estimate the inventory of PFASs in whole water mass in the Japan Sea. |
| Databáze: | OpenAIRE |
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