Bromide strongly influences the formation of reaction products during the ozonation of diclofenac, metoprolol and isoproturon
Publikation: Beiträge in Zeitschriften › Zeitschriftenaufsätze › Forschung › begutachtet
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in: Science of the Total Environment, Jahrgang 815, 152427, 01.04.2022.
Publikation: Beiträge in Zeitschriften › Zeitschriftenaufsätze › Forschung › begutachtet
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TY - JOUR
T1 - Bromide strongly influences the formation of reaction products during the ozonation of diclofenac, metoprolol and isoproturon
AU - Wirzberger, Vanessa
AU - Merkus, Valentina I.
AU - Klein, Michelle
AU - Hohrenk-Danzouma, Lotta L.
AU - Lutze, Holger V.
AU - Schmidt, Torsten C.
N1 - Publisher Copyright: © 2021 Elsevier B.V.
PY - 2022/4/1
Y1 - 2022/4/1
N2 - Bromide as an omnipresent matrix component in wastewater can react with ozone to form hypobromous acid (HOBr). This secondary oxidant can subsequently react with micropollutants but also with formed intermediates. Therefore, bromide and especially HOBr can highly influence the formation of transformation products (TPs). This has already been reported for the ozonation of N,N-dimethylsulfamide leading to the formation of the cancerogenic N-nitrosodimethylamine only in bromide containing waters. In this study, the influence of different bromide and ozone concentrations on the formation of TPs during the ozonation of isoproturon (ISO), metoprolol (METO) and diclofenac (DCF) were investigated. Additionally, TPs were identified, which are formed in the direct reaction of the micropollutants with HOBr with and without subsequent ozonation. The results showed that even if the reactions of ozone with the substances should be favored bromide can highly influence the formation of TPs already at low concentrations. In summary, new TPs after the reaction with HOBr (and subsequent ozonation) could be postulated for ISO, METO and DCF. This underlines that the present water matrix can have a high influence on the formation of TPs and that these mechanisms need to be investigated further.
AB - Bromide as an omnipresent matrix component in wastewater can react with ozone to form hypobromous acid (HOBr). This secondary oxidant can subsequently react with micropollutants but also with formed intermediates. Therefore, bromide and especially HOBr can highly influence the formation of transformation products (TPs). This has already been reported for the ozonation of N,N-dimethylsulfamide leading to the formation of the cancerogenic N-nitrosodimethylamine only in bromide containing waters. In this study, the influence of different bromide and ozone concentrations on the formation of TPs during the ozonation of isoproturon (ISO), metoprolol (METO) and diclofenac (DCF) were investigated. Additionally, TPs were identified, which are formed in the direct reaction of the micropollutants with HOBr with and without subsequent ozonation. The results showed that even if the reactions of ozone with the substances should be favored bromide can highly influence the formation of TPs already at low concentrations. In summary, new TPs after the reaction with HOBr (and subsequent ozonation) could be postulated for ISO, METO and DCF. This underlines that the present water matrix can have a high influence on the formation of TPs and that these mechanisms need to be investigated further.
KW - HPLC-HRMS
KW - Hypobromous acid
KW - Non-target screening
KW - Secondary oxidant
KW - Transformation products
KW - Chemistry
UR - http://www.scopus.com/inward/record.url?scp=85122449443&partnerID=8YFLogxK
U2 - 10.1016/j.scitotenv.2021.152427
DO - 10.1016/j.scitotenv.2021.152427
M3 - Journal articles
C2 - 34971689
AN - SCOPUS:85122449443
VL - 815
JO - Science of the Total Environment
JF - Science of the Total Environment
SN - 0048-9697
M1 - 152427
ER -