Homologue Composition of Technical Chlorinated Paraffins Used in Several Countries over the Last 50 YearsâSCCPs Are Still Out There.
Environ Sci Technol
; 57(35): 13136-13147, 2023 09 05.
Article
em En
| MEDLINE
| ID: mdl-37607020
ABSTRACT
Chlorinated paraffins (CPs) are widely produced chemicals, with certain CP subgroups facing global restrictions due to their environmental dispersion, persistence, bioaccumulation, and toxicity. To evaluate the effectiveness of these international restrictions, we assessed the homologue group contribution and the mass fraction of short-chain CPs (SCCPs C10-C13), medium-chain CPs (MCCPs C14-C17), and long-chain CPs (LCCPs ≥C18) in 36 technical CP mixtures used worldwide over the last 50 years. Using low-resolution mass spectrometry (LC-ESI-MS/MS), we quantified 74 CP homologue groups (C10Cl4-C20Cl10). Additionally, high-resolution mass spectrometry (LC-ESI-QTOF-MS) screening was employed to identify unresolved CP contents, covering 375 CP homologue groups (C6Cl4-C30Cl30). Overall, 1 sample was mainly composed of Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Parafina
/
Espectrometria de Massas em Tandem
Idioma:
En
Ano de publicação:
2023
Tipo de documento:
Article