Cited by 107Per- and polyfluoroalkyl substances researchAnalytical chemistry methods developmentFluoride Effects and Removal

Determination of adsorbable organic fluorine from aqueous environmental samples by adsorption to polystyrene-divinylbenzene based activated carbon and combustion ion chromatography

Wagner, Andrea, Raue, Brigitte, Brauch, Heinz-Jürgen, Worch, Eckhard, Lange, Frank T.·2013·Journal of Chromatography A

Abstract

A new method for the determination of trace levels of adsorbable organic fluorine (AOF) in water is presented. Even if the individual contributing target compounds are widely unknown, this surrogate parameter is suited to identify typical organofluorine contaminations, such as with polyfluorinated chemicals (PFCs), and represents a lower boundary of the organofluorine concentration in water bodies. It consists of the adsorption of organofluorine chemicals on a commercially available synthetic polystyrene-divinylbenzene based activated carbon (AC) followed by analysis of the loaded AC by hydropyrolysis combustion ion chromatography (CIC). Inorganic fluorine is displaced by excess nitrate during the extraction step and by washing the loaded activated carbon with an acidic sodium nitrate solution. Due to its high purity the synthetic AC had a very low and reproducible fluorine blank (0.3 μg/g) compared to natural ACs (up to approximately 9 μg/g). Using this AC, fluoride and the internal standard phosphate could be detected free of chromatographic interferences. With a sample volume of 100 mL and 2× 100 mg of AC packed into two extraction columns combined in series, a limit of quantification (LOQ), derived according to the German standard method DIN 32645, of 0.3 μg/L was achieved. The recoveries of six model PFCs were determined from tap water and a municipal wastewater treatment plant (WWTP) effluent. Except for the extremely polar perfluoroacetic acid (recovery of approximately 10%) the model substances showed fairly good (50% for perfluorobutanoic acid (PFBA)) to very good fluorine recoveries (100±20% for perfluorooctanoic acid (PFOA), perfluorobutanesulfonate (PFBS), 6:2 fluorotelomersulfonate (6:2 FTS)), both from tap water and wastewater matrix. This new analytical protocol was exemplarily applied to several surface water and groundwater samples. The obtained AOF values were compared to the fluorine content of 19 target PFCs analyzed by high performance liquid chromatography-electrospray tandem mass spectrometry (HPLC-(-)ESI-MS/MS). In groundwater contaminated by PFC-containing aqueous film-forming foams (AFFFs) up to 50% of the AOF could be attributed to PFC target chemicals, while in diffuse contaminated samples only <5% of the AOF could be identified by PFC analysis.

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Crossref · 10.1016/j.chroma.2013.04.051

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Authors
Wagner, A., Raue, B., Brauch, H.-J., Worch, E., & Lange, F. T.
Affiliations
  • DVGW - Technologiezentrum Wasser (DE)
  • Technische Universität Dresden (DE)
Corresponding author
Lange, Frank T.
Venue
Journal of Chromatography A
Publisher
Elsevier BV
Published
2013-06
Volume
1295
Pages
82-89
ISSN
0021-9673 (ISSN-L)
OpenAlex
W1974916973
Cited by
107
References
20
Citations by year
2026: 6 · 2025: 9 · 2024: 12 · 2023: 13 · 2022: 10 · 2021: 14 · 2020: 8 · 2019: 12 · 2018: 9 · 2017: 3 · 2016: 7 · 2015: 4
FWCI
2.91
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Chromatography A (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Physical Sciences › Environmental Science › Environmental Chemistry › Per- and polyfluoroalkyl substances research
  • Physical Sciences › Chemistry › Analytical Chemistry › Analytical chemistry methods development
  • Physical Sciences › Environmental Science › Water Science and Technology › Fluoride Effects and Removal
Keywords
activated carbon adsorption, combustion ion chromatography, hydropyrolysis, perfluorooctanoic acid, perfluorobutanoic acid, perfluorobutanesulfonate, groundwater contamination, wastewater treatment plant effluent, tap water
MeSH terms
Adsorption, Charcoal, Chromatography, Ion Exchange, Fluorine, Polystyrenes, Water Pollutants, Chemical, Solid Phase Extraction, Groundwater, Wastewater

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