Photochemical transformations of tetrabromobisphenol A and related phenols in water
2004 (English)In: Chemosphere, ISSN 0045-6535, Vol. 54, no 1, 117-126 p.Article in journal (Refereed) Published
romobisphenolA (TBBPA), tribromobisphenol A (TriBBPA), tetrachlorobisphenol A (TCBPA), 2,4-dichlorophenolat various pHs as well as 2-chlorophenol, 2-bromophenol, 3,4-dichlorophenol and bisphenol A at pH 11. The absorbancespectra of the compounds and the emission spectra of the light-source were determined and used to calculatedisappearance quantum yields of the photochemical reactions that were taking place. No major differences between thedisappearance quantum yields of TBBPA and TCBPA were observed at pH 10, while the disappearance quantum yieldof TriBBPA was approximately two times higher. The rate of decomposition of TBBPA was six times higher at pH 8than at pH 6. Identification of the degradation products of TBBPA and TriBBPA, by GC–MS analysis and bycomparison to synthesised reference compounds, indicated that TBBPA and TriBBPA decompose via differentmechanisms. Three isopropylphenol derivatives; 4-isopropyl-2,6-dibromophenol, 4-isopropylene-2,6-dibromophenoland 4-(2-hydroxyisopropyl)-2,6-dibromophenol, were identified as major degradation products of TBBPA while themajor degradation product of TriBBPA was tentatively identified as 2-(2,4-cyclopentadienyl)-2-(3,5-dibromo-4-hydroxyphenyl)propane.
Place, publisher, year, edition, pages
Elsevier , 2004. Vol. 54, no 1, 117-126 p.
Tetrabromobisphenol A; Brominated flame retardants; Reactivity; Photodegradation
IdentifiersURN: urn:nbn:se:su:diva-23144DOI: 10.1016/S0045-6535(03)00704-5OAI: oai:DiVA.org:su-23144DiVA: diva2:190395
Part of urn:nbn:se:su:diva-1672004-05-132004-05-132009-12-21Bibliographically approved