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Influence of organic matter type and medium composition on the sorption affinity of C12-benzalkonium cation.
Environ Pollut. 2013 Aug; 179:153-9.EP

Abstract

We used the 7-μm polyacrylate ion-exchange SPME fibers to investigate C12-benzalkonium sorption to 10 mg/L natural organic matter at concentrations well below the cation-exchange capacity. C12-BAC sorption at constant medium conditions differed within 0.4 log units for two humic acids (Aldrich, Leonardite) and peat (Sphagnum, Pahokee), with similar nonlinear sorption isotherms (KF ∼ 0.8). Sorption to the SPME fibers and Aldrich humic acid (AHA) was reduced at both low pH and high electrolyte concentration, and reduced more strongly by Ca²⁺ compared with Na⁺ at similar concentrations. Sorption isotherms for AHA (5-50-500 mM Na⁺, pH 6) was modeled successfully by the NICA-Donnan approach, resulting in an intrinsic sorption coefficient of 5.35 (Caq = 1 nM). The NICA-Donnan model further explained the stronger specific binding of Ca²⁺ compared to Na⁺ by differences in Boltzmann factors. This study provides relevant information to interpret bioavailability of quaternary ammonium compounds, and possibly for other organic cations.

Authors+Show Affiliations

Institute for Risk Assessment Sciences (IRAS), Utrecht University, Yalelaan 104, 3584 CM Utrecht, The Netherlands. y.chen@uu.nlNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

23676325

Citation

Chen, Yi, et al. "Influence of Organic Matter Type and Medium Composition On the Sorption Affinity of C12-benzalkonium Cation." Environmental Pollution (Barking, Essex : 1987), vol. 179, 2013, pp. 153-9.
Chen Y, Hermens JL, Droge ST. Influence of organic matter type and medium composition on the sorption affinity of C12-benzalkonium cation. Environ Pollut. 2013;179:153-9.
Chen, Y., Hermens, J. L., & Droge, S. T. (2013). Influence of organic matter type and medium composition on the sorption affinity of C12-benzalkonium cation. Environmental Pollution (Barking, Essex : 1987), 179, 153-9. https://doi.org/10.1016/j.envpol.2013.04.017
Chen Y, Hermens JL, Droge ST. Influence of Organic Matter Type and Medium Composition On the Sorption Affinity of C12-benzalkonium Cation. Environ Pollut. 2013;179:153-9. PubMed PMID: 23676325.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Influence of organic matter type and medium composition on the sorption affinity of C12-benzalkonium cation. AU - Chen,Yi, AU - Hermens,Joop L M, AU - Droge,Steven T J, Y1 - 2013/05/12/ PY - 2013/02/12/received PY - 2013/04/05/revised PY - 2013/04/08/accepted PY - 2013/5/17/entrez PY - 2013/5/17/pubmed PY - 2013/11/10/medline SP - 153 EP - 9 JF - Environmental pollution (Barking, Essex : 1987) JO - Environ. Pollut. VL - 179 N2 - We used the 7-μm polyacrylate ion-exchange SPME fibers to investigate C12-benzalkonium sorption to 10 mg/L natural organic matter at concentrations well below the cation-exchange capacity. C12-BAC sorption at constant medium conditions differed within 0.4 log units for two humic acids (Aldrich, Leonardite) and peat (Sphagnum, Pahokee), with similar nonlinear sorption isotherms (KF ∼ 0.8). Sorption to the SPME fibers and Aldrich humic acid (AHA) was reduced at both low pH and high electrolyte concentration, and reduced more strongly by Ca²⁺ compared with Na⁺ at similar concentrations. Sorption isotherms for AHA (5-50-500 mM Na⁺, pH 6) was modeled successfully by the NICA-Donnan approach, resulting in an intrinsic sorption coefficient of 5.35 (Caq = 1 nM). The NICA-Donnan model further explained the stronger specific binding of Ca²⁺ compared to Na⁺ by differences in Boltzmann factors. This study provides relevant information to interpret bioavailability of quaternary ammonium compounds, and possibly for other organic cations. SN - 1873-6424 UR - https://www.unboundmedicine.com/medline/citation/23676325/Influence_of_organic_matter_type_and_medium_composition_on_the_sorption_affinity_of_C12_benzalkonium_cation_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0269-7491(13)00218-2 DB - PRIME DP - Unbound Medicine ER -