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Recommended terms and abbreviations for polychlorinated alkanes (PCAs) as the predominant component of chlorinated paraffins (CPs)
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Number of Authors: 142023 (English)In: TrAC. Trends in analytical chemistry, ISSN 0165-9936, E-ISSN 1879-3142, Vol. 169, article id 117363Article, review/survey (Refereed) Published
Abstract [en]

Despite several decades of study, ambiguities persist in terms used to express environmental and biotic occurrences of polychlorinated alkanes (PCAs), the main ingredient of chlorinated paraffins (CPs). This can lead to misinterpretation of data between analytical chemists, toxicologists, risk assessors/managers and regulators. The terms recommended here to harmonise reporting and reduce ambiguity use the conventional definition of PCAs - linear chlorinated alkanes (typically, C≥10) with one chlorine per carbon, although some evidence of multiple chlorination exists. Other recommendations include.

● reporting the “Sum of measured PCAs” because “Total PCAs” is currently unquantifiable.

●reporting individual chain lengths, e.g., ΣPCAs-C11, ΣPCAs-C13, allows easier comparability and allows toxicology and risk assessment to consider different PCA combinations.

● maintain studies on individual PCAs in order to better characterise chemical, environmental and health risk behaviour.

The terms could be extended in future to assimilate new findings on individual PCAs, multiple chlorination and chirality.

Place, publisher, year, edition, pages
2023. Vol. 169, article id 117363
Keywords [en]
Polychlorinated alkanes (PCAs), Chlorinated paraffins (CPs), PCA congeners, Sum PCAs, Configurational isomer, Chain length congener group, Homologue group, PCA stereoisomer
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Environmental Sciences Analytical Chemistry
Identifiers
URN: urn:nbn:se:su:diva-224840DOI: 10.1016/j.trac.2023.117363ISI: 001108395300001Scopus ID: 2-s2.0-85175153729OAI: oai:DiVA.org:su-224840DiVA, id: diva2:1822855
Available from: 2023-12-28 Created: 2023-12-28 Last updated: 2023-12-28Bibliographically approved

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Bergman, Åke

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