View in EDS

Comparative sorption and desorption behaviors of PFHxS and PFOS on sequentially extracted humic substances.

Saved in:
Bibliographic Details
Title: Comparative sorption and desorption behaviors of PFHxS and PFOS on sequentially extracted humic substances.
Authors: Lixia Zhao1 zhaolixia1982@163.com, Yifeng Zhang1, Shuhong Fang1, Lingyan Zhu1 zhuly@nankai.edu.cn, Zhengtao Liu2
Source: Journal of Environmental Sciences (Elsevier). Dec2014, Vol. 26 Issue 12, p2517-2525. 9p.
Subjects: Humic acid, Humins, Sorption, Desorption, Perfluoro compounds, Sulfonates
Abstract: The sorption and desorption behaviors of two perfluoroalkane sulfonates (PFSAs), including perfluorohexane sulfonate (PFHxS) and perfluorooctane sulfonate (PFOS) on two humic acids (HAs) and humin (HM), which were extracted from a peat soil, were investigated. The sorption kinetics and isotherms showed that the sorption of PFOS on the humic substances (HSs) was much higher than PFHxS. For the same PFSA compound, the sorption on HSs followed the order of HM > HA2 > HA1. These suggest that hydrophobic interaction plays a key role in the sorption of PFSAs on HSs. The sorption capacities of PFSAs on HSs were significantly related to their aliphaticity, but negatively correlated to aromatic carbons, indicating the importance of aliphatic groups in the sorption of PFSAs. Compared to PFOS, PFHxS displayed distinct desorption hysteresis, probably due to irreversible pore deformation after sorption of PFHxS. The sorption of the two PFSAs on HSs decreased with an increase in pH in the solution. This is ascribed to the electrostatic interaction and hydrogen bonding at lower pH. Hydrophobic interaction might also be stronger at lower pH due to the aggregation of HSs. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Environmental Sciences (Elsevier) is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
FullText Text:
  Availability: 0
Header DbId: egs
DbLabel: Engineering Source
An: 109214059
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
IllustrationInfo
Items – Name: Title
  Label: Title
  Group: Ti
  Data: Comparative sorption and desorption behaviors of PFHxS and PFOS on sequentially extracted humic substances.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Lixia+Zhao%22">Lixia Zhao</searchLink><relatesTo>1</relatesTo><i> zhaolixia1982@163.com</i><br /><searchLink fieldCode="AR" term="%22Yifeng+Zhang%22">Yifeng Zhang</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Shuhong+Fang%22">Shuhong Fang</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Lingyan+Zhu%22">Lingyan Zhu</searchLink><relatesTo>1</relatesTo><i> zhuly@nankai.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Zhengtao+Liu%22">Zhengtao Liu</searchLink><relatesTo>2</relatesTo>
– Name: TitleSource
  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22Journal+of+Environmental+Sciences+%28Elsevier%29%22">Journal of Environmental Sciences (Elsevier)</searchLink>. Dec2014, Vol. 26 Issue 12, p2517-2525. 9p.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Humic+acid%22">Humic acid</searchLink><br /><searchLink fieldCode="DE" term="%22Humins%22">Humins</searchLink><br /><searchLink fieldCode="DE" term="%22Sorption%22">Sorption</searchLink><br /><searchLink fieldCode="DE" term="%22Desorption%22">Desorption</searchLink><br /><searchLink fieldCode="DE" term="%22Perfluoro+compounds%22">Perfluoro compounds</searchLink><br /><searchLink fieldCode="DE" term="%22Sulfonates%22">Sulfonates</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: The sorption and desorption behaviors of two perfluoroalkane sulfonates (PFSAs), including perfluorohexane sulfonate (PFHxS) and perfluorooctane sulfonate (PFOS) on two humic acids (HAs) and humin (HM), which were extracted from a peat soil, were investigated. The sorption kinetics and isotherms showed that the sorption of PFOS on the humic substances (HSs) was much higher than PFHxS. For the same PFSA compound, the sorption on HSs followed the order of HM > HA2 > HA1. These suggest that hydrophobic interaction plays a key role in the sorption of PFSAs on HSs. The sorption capacities of PFSAs on HSs were significantly related to their aliphaticity, but negatively correlated to aromatic carbons, indicating the importance of aliphatic groups in the sorption of PFSAs. Compared to PFOS, PFHxS displayed distinct desorption hysteresis, probably due to irreversible pore deformation after sorption of PFHxS. The sorption of the two PFSAs on HSs decreased with an increase in pH in the solution. This is ascribed to the electrostatic interaction and hydrogen bonding at lower pH. Hydrophobic interaction might also be stronger at lower pH due to the aggregation of HSs. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Environmental Sciences (Elsevier) is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=109214059
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1016/j.jes.2014.04.009
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 9
        StartPage: 2517
    Subjects:
      – SubjectFull: Humic acid
        Type: general
      – SubjectFull: Humins
        Type: general
      – SubjectFull: Sorption
        Type: general
      – SubjectFull: Desorption
        Type: general
      – SubjectFull: Perfluoro compounds
        Type: general
      – SubjectFull: Sulfonates
        Type: general
    Titles:
      – TitleFull: Comparative sorption and desorption behaviors of PFHxS and PFOS on sequentially extracted humic substances.
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Lixia Zhao
      – PersonEntity:
          Name:
            NameFull: Yifeng Zhang
      – PersonEntity:
          Name:
            NameFull: Shuhong Fang
      – PersonEntity:
          Name:
            NameFull: Lingyan Zhu
      – PersonEntity:
          Name:
            NameFull: Zhengtao Liu
    IsPartOfRelationships:
      – BibEntity:
          Dates:
            – D: 01
              M: 12
              Text: Dec2014
              Type: published
              Y: 2014
          Identifiers:
            – Type: issn-print
              Value: 10010742
          Numbering:
            – Type: volume
              Value: 26
            – Type: issue
              Value: 12
          Titles:
            – TitleFull: Journal of Environmental Sciences (Elsevier)
              Type: main
ResultId 1