Cited by 118Per- and polyfluoroalkyl substances researchEnvironmental Chemistry and AnalysisToxic Organic Pollutants Impact

Distribution and desorption of perfluorinated compounds in fractionated sediments

Zhao, Lixia, Zhu, Lingyan, Yang, Liping, Liu, Zhengtao, Zhang, Yahui·2012·Chemosphere

Abstract

This study provides particle-scale understanding of perfluorinated compounds (PFCs) distribution in sediments collected from two locations in Tianjin, China. The sediments were fractionated according to particle size and density. Even though lower density carbonaceous fractions contributed only 17.8-22.3% of the total sediment mass, they displayed stronger affinity to PFCs with much higher PFC concentrations than in the heavy fractions. Hydrophobic interaction predominated the partition of longer chain PFCs while electrostatic interaction could affect the sorption of short chain PFCs in sediment fractions. The individual PFC concentrations increased with increasing perfluorocarbon chain length, and the concentrations of perfluoroalkanesulfonates (PFSAs) in the same sediment fraction were higher than perfluorocarboxylates (PFCAs) with the same chain length. Log K(oc) was in the range of 1.70-3.80 for C5-C12 PFCAs and 1.75-2.97 for C4-C8 PFSAs. Desorption experiments indicated desorption became difficult as the chain length increased, and PFSAs were harder to be desorbed than the corresponding PFCAs.

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Crossref · 10.1016/j.chemosphere.2012.05.062

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Authors
Zhao, L., Zhu, L., Yang, L., Liu, Z., & Zhang, Y.
Affiliations
  • Nankai University (CN)
  • Chinese Research Academy of Environmental Sciences (CN)
Corresponding author
Zhu, Lingyan
Venue
Chemosphere
Publisher
Elsevier BV
Published
2012-09
Volume
88
Issue
11
Pages
1390-1397
ISSN
0045-6535 (ISSN-L)
OpenAlex
W2026039659
Cited by
118
References
39
Citations by year
2026: 8 · 2025: 18 · 2024: 10 · 2023: 12 · 2022: 13 · 2021: 8 · 2020: 8 · 2019: 9 · 2018: 5 · 2017: 6 · 2016: 7 · 2015: 6 · 2014: 5 · 2013: 3
FWCI
3.57
Type
journal article
Language
en
Open access
closed
Locations
  • Chemosphere (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Physical Sciences › Environmental Science › Environmental Chemistry › Per- and polyfluoroalkyl substances research
  • Physical Sciences › Environmental Science › Environmental Chemistry › Environmental Chemistry and Analysis
  • Physical Sciences › Environmental Science › Health, Toxicology and Mutagenesis › Toxic Organic Pollutants Impact
Keywords
perfluorinated compounds, sediment fractionation, particle size fractions, density fractions, sorption, desorption, perfluorocarboxylic acids, chain length effects, octanol-water partition coefficient, hydrophobic interactions, electrostatic interactions, Tianjin
MeSH terms
Absorption, Fluorocarbons, Geologic Sediments

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