دورية أكاديمية
Release of Per- and Polyfluoroalkyl Substances from Aqueous Film-Forming Foam Impacted Soils.
| العنوان: | Release of Per- and Polyfluoroalkyl Substances from Aqueous Film-Forming Foam Impacted Soils. |
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| المؤلفون: | Maizel AC; Department of Civil and Environmental Engineering, Colorado School of Mines, 1500 Illinois Street, Golden, Colorado 80401, United States., Shea S; Department of Civil and Environmental Engineering, Colorado School of Mines, 1500 Illinois Street, Golden, Colorado 80401, United States., Nickerson A; Department of Civil and Environmental Engineering, Colorado School of Mines, 1500 Illinois Street, Golden, Colorado 80401, United States., Schaefer C; CDM Smith, 110 Fieldcrest Avenue, Edison, New Jersey 08837, United States., Higgins CP; Department of Civil and Environmental Engineering, Colorado School of Mines, 1500 Illinois Street, Golden, Colorado 80401, United States. |
| المصدر: | Environmental science & technology [Environ Sci Technol] 2021 Nov 02; Vol. 55 (21), pp. 14617-14627. Date of Electronic Publication: 2021 Oct 19. |
| نوع المنشور: | Journal Article; Research Support, U.S. Gov't, Non-P.H.S. |
| اللغة: | English |
| بيانات الدورية: | Publisher: American Chemical Society Country of Publication: United States NLM ID: 0213155 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1520-5851 (Electronic) Linking ISSN: 0013936X NLM ISO Abbreviation: Environ Sci Technol Subsets: MEDLINE |
| أسماء مطبوعة: | Publication: Washington DC : American Chemical Society Original Publication: Easton, Pa. : American Chemical Society, c1967- |
| مواضيع طبية MeSH: | Fluorocarbons*/analysis , Groundwater* , Water Pollutants, Chemical*/analysis, Soil ; Water |
| مستخلص: | Per- and polyfluoroalkyl substances (PFASs) are highly mobile in the saturated subsurface, yet aqueous film-forming foam (AFFF)-impacted source zones appear to be long lasting PFAS reservoirs. This study examined the release of over one hundred anionic and zwitterionic PFASs from two AFFF-impacted surface soils under saturated conditions with packed soil columns. Perfluoroalkyl acids (PFAAs) were released more rapidly than their polyfluorinated precursors, while anionic PFASs that were present in partially uncharged states were released more slowly than PFASs that were present entirely as anions, as were zwitterionic PFASs with terminal cationic functional groups when compared with analogous zwitterions with only anionic terminal groups. Nonideal transport was observed in both per- and polyfluorinated classes, as soil column effluent concentrations of slowly released PFASs increased by up to 107-fold with sustained artificial groundwater flow. A flow-interruption experiment suggested the influence of rate-limited desorption on diverse PFAS classes, including PFAAs with as few as four perfluorinated carbons. These results suggest that during infiltration the slow, rate-limited desorption of anionic and zwitterionic PFAA precursors may result in these compounds comprising an increasingly large fraction of the remaining PFASs in AFFF-impacted surface soils. |
| فهرسة مساهمة: | Keywords: AFFF; PFAS; contaminant transport; rate-limited sorption; source zones |
| المشرفين على المادة: | 0 (Fluorocarbons) 0 (Soil) 0 (Water Pollutants, Chemical) 059QF0KO0R (Water) |
| تواريخ الأحداث: | Date Created: 20211019 Date Completed: 20211110 Latest Revision: 20211110 |
| رمز التحديث: | 20221213 |
| DOI: | 10.1021/acs.est.1c02871 |
| PMID: | 34665614 |
| قاعدة البيانات: | MEDLINE |
Find this issue from the American Chemical Society | تدمد: | 1520-5851 |
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| DOI: | 10.1021/acs.est.1c02871 |