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type: UserItem
resource: High-Resolution Mass Spectrometry Screening of Wastewater Effluent for Micropollutants and Their Transformation Products during Disinfection with Performic Acid
access date: 2022-07-01 11:20:22
repository: ACS Publications

High-Resolution Mass Spectrometry Screening of Wastewater Effluent for Micropollutants and Their Transformation Products during Disinfection with Performic Acid
type: AcademicArticle
abstract: Performic acid (PFA) is an emerging disinfectant applied for full-scale disinfection of wastewater effluent. While many studies have focused on assessing the microbial water quality during PFA disinfection, studies on the ability of PFA to oxidize organic micropollutants are still scarce. In this study, nontarget screening of wastewater secondary effluent during PFA treatment was performed using liquid chromatography–high-resolution mass spectrometry. A low dose (2 mg/L) of PFA was able to affect the organic matter composition within a short exposure time (10 min). Multivariate analysis as well as suspect screening indicated that PFA oxidation largely reduced the intensities of micropollutants with a tertiary amine moiety and led to the formation of their mono-oxygenated derivatives, N-oxides, a class of transformation products that are known as biologically stable but whose impact on aquatic organisms still needs to be assessed. Mechanistic studies were conducted on selected micropollutants (i.e., lidocaine, amisulpride, tramadol, and clarithromycin). The minimum apparent second-order rate constant of PFA with lidocaine was determined as 7.54 M–1 s–1 at pH 8.0. Lidocaine was mainly converted (∼95%) into its N-oxide via direct oxygen transfer from PFA. Overall results revealed a strong electrophilic reactivity of PFA toward electron-rich moieties (e.g., amines) of micropollutants.
doi: 10.1021/acsestwater.2c00075
creator: Person
author list: Person
is part of: Issue
  date: 2022-06-23
  is part of: ACS ES&T Water
    type: Journal
    publisher: American Chemical Society
    short title: ACS EST Water

Person
given name: Maolida
surname: Nihemaiti

Person
given name: Nina
surname: Huynh

Person
given name: Romain
surname: Mailler

Person
given name: Perrine
surname: Mèche-Ananit

Person
given name: Vincent
surname: Rocher

Person
given name: Rachid
surname: Barhdadi

Person
given name: Régis
surname: Moilleron

Person
given name: Julien
surname: Le Roux