Perfluorinated Surfactants in Surface, Subsurface Water and Microlayer from Dalian Coastal Waters in China

Two predominant perfluorinated compounds (PFCs), Perfluorooctane sulfonate (PFOS) and perfluorooctanoate (PFOA), in surface water (SW, 0–20 cm), subsurface water (SSW, >30 cm depth), and sea surface microlayer (SML, 50 µm thickness) were measured from Dalian Coastal waters in China. The SML sampl...

Full description

Saved in:
Bibliographic Details
Published in:Environmental science & technology 2008-05, Vol.42 (10), p.3538-3542
Main Authors: Ju, Xiaodong, Jin, Yihe, Sasaki, Kazuaki, Saito, Norimitsu
Format: Article
Language:English
Subjects:
Analysis
Applied sciences
Characterization of Natural and Affected Environments
Chemical compounds
China
Chromatography, Liquid
Environmental impact
Environmental science
Exact sciences and technology
Fluorocarbons - analysis
Marine
Measurement techniques
Pollution
Quality Control
Spectrometry, Mass, Secondary Ion
Surface water
Surface-Active Agents - analysis
Surfactants
Water
Water Pollutants, Chemical - analysis
Citations: Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Two predominant perfluorinated compounds (PFCs), Perfluorooctane sulfonate (PFOS) and perfluorooctanoate (PFOA), in surface water (SW, 0–20 cm), subsurface water (SSW, >30 cm depth), and sea surface microlayer (SML, 50 µm thickness) were measured from Dalian Coastal waters in China. The SML samples were collected using glass-plate dipping method. Analysis of the PFCs was conducted through solid-phase extraction, followed by LC/MS-SIM. The PFC’s concentrations in SW samples were consistent with previously reported data in this region. Significantly higher concentrations of PFCs were found in SML samples than corresponding SSW samples. The enrichment factors (EF = C SML/C SSW) for PFOS were as high as 24–109 at three near-shore sites. The concentration in SW was also generally higher than corresponding SSW samples, giving C SW/C SSW mean ratios of 1.5 and 1.4 for PFOS and PFOA, respectively. This apparent enrichment of PFCs in surface water, especially in the microlayer, has implications for designing measurement techniques, understanding their distributions, and sea spray-mediated transport in the environment.
ISSN:0013-936X
1520-5851
DOI:10.1021/es703006d