Determination of trace organic contaminants by a novel mixed-mode online solid-phase extraction coupled to liquid chromatography–tandem mass spectrometry

Zou, Jianmin; Yao, Bo; Yan, Shuwen; Song, Weihua

doi:10.1016/j.envpol.2022.119112

Cited by 14 publications

(3 citation statements)

References 44 publications

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“…A mixed-mode online solid-phase extraction coupled to HPLC-QQQ MS (Agilent 1290-6470, US) was employed to analyze TrOCs in the wastewater effluent. The instrumental setup can be found in our previous report . Fourteen TrOCs were quantified, and the MS parameters are shown in Table S2.…”

Section: Methodsmentioning

confidence: 99%

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Photosensitized Transformation of Hydrogen Peroxide in Dissolved Organic Matter Solutions under Simulated Solar Irradiation

Sha

Yan

Deng

et al. 2022

Environ. Sci. Technol.

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Hydrogen peroxide plays an important role in photochemical processes in aquatic environments. However, whether it can be transformed by photoexcited chromophoric dissolved organic matter (CDOM) remains unclear. Therefore, this study examined the photosensitized degradation of H 2 O 2 in CDOM-enriched solutions under simulated solar irradiation. Our results suggest that the presence of CDOM enhances the photodegradation rate of H 2 O 2 via the photosensitization process and d • OH is generated stoichiometrically with H 2 O 2 attenuation. Experimental results with model photosensitizers indicate that one-electron reducing species of CDOM (CDOM d • − ), not triplet CDOM,is the primary reactive species that reduces H 2 O 2 to yield d • OH. By monitoring the variation of CDOM d • − , the reaction rate constant of CDOM d • − with H 2 O 2 was estimated to be 1.5-fold greater than that with O 2 . Furthermore, a wastewater effluent was exposed to simulated solar irradiation with the addition of H 2 O 2 , and the results demonstrated that the photodegradation of trace organic contaminants (TrOCs) was significantly enhanced by the increased d • OH level. Overall, the current study provided new insights into the photochemical formation of d • OH via the one-electron reduction of H 2 O 2 by CDOM d • − . The solar irradiation of wastewater with H 2 O 2 enhancement could be a useful and economically beneficial advanced oxidation process for TrOC abatement.

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Section: Methodsmentioning

confidence: 99%

“…The instrumental setup can be found in our previous report. 52 Fourteen TrOCs were quantified, and the MS parameters are shown in Table S2.…”

Section: ■ Introductionmentioning

confidence: 99%

Photosensitized Transformation of Hydrogen Peroxide in Dissolved Organic Matter Solutions under Simulated Solar Irradiation

Sha

Yan

Deng

et al. 2022

Environ. Sci. Technol.

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“…11,12 Many methods for detecting antibiotics have been reported, 13–17 among which high performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS) has become the most commonly used analytical technique for simultaneous detection of multiple trace MACs in a complex matrix. 18 However, there are many types of food matrices, with different compositions, which affect the separation of targets, reduce detection sensitivity, and even damage analytical instruments. 19 Therefore, sample pretreatment was required before further analysis.…”

Section: Introductionmentioning

confidence: 99%

Design of a novel green bio-based organic–inorganic hybrid material for cost-effective and sustainable monitoring of antibiotic residues

Qin,

Song,

et al. 2024

Green Chem.

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Micro-matrix cartridge extraction followed by online micro-solid phase extraction based on polystyrene@hydroxypropyl-β-cyclodextrin nanofibers for selective determination of fipronil and its metabolites in soil

et al. 2023

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Determination of trace organic contaminants by a novel mixed-mode online solid-phase extraction coupled to liquid chromatography–tandem mass spectrometry

Cited by 14 publications

References 44 publications

Photosensitized Transformation of Hydrogen Peroxide in Dissolved Organic Matter Solutions under Simulated Solar Irradiation

Photosensitized Transformation of Hydrogen Peroxide in Dissolved Organic Matter Solutions under Simulated Solar Irradiation

Design of a novel green bio-based organic–inorganic hybrid material for cost-effective and sustainable monitoring of antibiotic residues

Micro-matrix cartridge extraction followed by online micro-solid phase extraction based on polystyrene@hydroxypropyl-β-cyclodextrin nanofibers for selective determination of fipronil and its metabolites in soil

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