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Comparing PFAS analysis in batch leaching and column leaching tests

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Názov: Comparing PFAS analysis in batch leaching and column leaching tests
Autori: Ute Kalbe, Christian Piechotta, Nicole Bandow
Zdroj: Environ Sci Pollut Res Int
Informácie o vydavateľovi: Springer Science and Business Media LLC, 2024.
Rok vydania: 2024
Predmety: Fluorocarbons, Soil, Column percolation test, Fluorocarbons/analysis [MeSH], Leaching, Soil Pollutants/analysis [MeSH], PFAS, Batch test, Eluate pretreatment, Soil/chemistry [MeSH], Research Article, Environmental Monitoring/methods [MeSH], Soil Pollutants, 01 natural sciences, Environmental Monitoring, 0105 earth and related environmental sciences
Popis: Laboratory leaching tests are tools to assess the mobility of environmental contaminants released from granular materials. Comparative leaching tests were performed using four PFAS-contaminated soils whose concentration patterns of 10 selected perfluoroalkyl and polyfluoroalkyl substances (PFAS) differed due to the two types of contamination sources. This study aimed to evaluate the equivalence of two usual laboratory-scale leaching test procedures, batch and column percolation tests, at liquid-to-solid ratios (L/S) of 2 l/kg, which is the current practice within the German assessment framework, and 10 l/kg (relevant for some EU regulations such as the landfill directive). The differences between the replicates of leaching tests investigating PFAS were smaller for column percolation tests than for batch tests, probably mainly due to the greater sample size and the better representativeness of the sample portion analyzed. It was observed that batch tests overestimate the release of shorter-chain PFAS, whereby the effect was greater with carboxylic than with sulfonic acids. Currently, the limits of detection of analyses given by the DIN standard with regard to PFCA and PFSA in soils are partly not sufficient to detect very low contents, whereas the detection of selected PFCA and PFSA in eluates is more sensitive, in accordance with the available standards. This results in limitations when calculating mass balances.
Druh dokumentu: Article
Other literature type
Jazyk: English
ISSN: 1614-7499
DOI: 10.1007/s11356-024-35510-0
Prístupová URL adresa: https://pubmed.ncbi.nlm.nih.gov/39576439
https://repository.publisso.de/resource/frl:6491616
Rights: CC BY
Prístupové číslo: edsair.doi.dedup.....3a268f18d6080e67a5e4c328d24ca239
Databáza: OpenAIRE
Popis
Abstrakt:Laboratory leaching tests are tools to assess the mobility of environmental contaminants released from granular materials. Comparative leaching tests were performed using four PFAS-contaminated soils whose concentration patterns of 10 selected perfluoroalkyl and polyfluoroalkyl substances (PFAS) differed due to the two types of contamination sources. This study aimed to evaluate the equivalence of two usual laboratory-scale leaching test procedures, batch and column percolation tests, at liquid-to-solid ratios (L/S) of 2 l/kg, which is the current practice within the German assessment framework, and 10 l/kg (relevant for some EU regulations such as the landfill directive). The differences between the replicates of leaching tests investigating PFAS were smaller for column percolation tests than for batch tests, probably mainly due to the greater sample size and the better representativeness of the sample portion analyzed. It was observed that batch tests overestimate the release of shorter-chain PFAS, whereby the effect was greater with carboxylic than with sulfonic acids. Currently, the limits of detection of analyses given by the DIN standard with regard to PFCA and PFSA in soils are partly not sufficient to detect very low contents, whereas the detection of selected PFCA and PFSA in eluates is more sensitive, in accordance with the available standards. This results in limitations when calculating mass balances.
ISSN:16147499
DOI:10.1007/s11356-024-35510-0