DOI: 10.1016/j.watres.2017.10.047
Scopus记录号: 2-s2.0-85032307675
论文题名: Photochemical degradation of the carbapenem antibiotics imipenem and meropenem in aqueous solutions under solar radiation
作者: Reina A.C. ; Martínez-Piernas A.B. ; Bertakis Y. ; Brebou C. ; Xekoukoulotakis N.P. ; Agüera A. ; Sánchez Pérez J.A.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 128 起始页码: 61
结束页码: 70
语种: 英语
英文关键词: Carbapenem antibiotics
; Imipenem
; Meropenem
; Photolysis
; Quantum yield
; Solar radiation
Scopus关键词: Antibiotics
; Effluents
; Liquid chromatography
; Mass spectrometry
; Photodegradation
; Photolysis
; Quantum yield
; Solar radiation
; Solutions
; Wastewater treatment
; Water treatment
; Carbapenem antibiotic
; Compound parabolic collector
; Imipenem
; Meropenem
; Molar absorption coefficient
; Municipal wastewater treatment plants
; Simulated solar radiations
; Triple quadrupole linear ion trap mass spectrometries
; Incident solar radiation
; humic acid
; imipenem
; meropenem
; nitrate
; river water
; carbapenem derivative
; imipenem
; meropenem
; thienamycin derivative
; water
; absorption coefficient
; aqueous solution
; concentration (composition)
; equipment
; humic acid
; ion
; pH
; photochemistry
; photodegradation
; photolysis
; reaction kinetics
; river water
; solar radiation
; wastewater treatment plant
; absorption spectroscopy
; aquatic environment
; aqueous solution
; Article
; concentration (parameters)
; controlled study
; effluent
; first order rate constant
; ion trap mass spectrometry
; kinetics
; limit of detection
; liquid chromatography-mass spectrometry
; pH
; photochemistry
; photodegradation
; photolysis
; priority journal
; process optimization
; quadrupole mass spectrometry
; quantum yield
; radiation absorption
; solar radiation
; validation process
; waste water management
; waste water treatment plant
; analysis
; chemistry
; humic substance
; liquid chromatography
; radiation response
; river
; sunlight
; waste water
; water pollutant
; Carbapenems
; Chromatography, Liquid
; Humic Substances
; Imipenem
; Kinetics
; Photolysis
; Rivers
; Sunlight
; Thienamycins
; Waste Water
; Water
; Water Pollutants, Chemical
英文摘要: This paper deals with the photochemical fate of two representative carbapenem antibiotics, namely imipenem and meropenem, in aqueous solutions under solar radiation. The analytical method employed for the determination of the target compounds in various aqueous matrices, such as ultrapure water, municipal wastewater treatment plant effluents, and river water, at environmentally relevant concentrations, was liquid chromatography coupled with hybrid triple quadrupole-linear ion trap-mass spectrometry. The absorption spectra of both compounds were measured in aqueous solutions at pH values from 6 to 8, and both compounds showed a rather strong absorption band centered at about 300 nm, while their molar absorption coefficient was in the order from 9 × 103–104 L mol−1 cm−1. The kinetics of the photochemical degradation of the target compounds was studied in aqueous solutions under natural solar radiation in a solar reactor with compound parabolic collectors. It was found that the photochemical degradation of both compounds at environmentally relevant concentrations follows first order kinetics and the quantum yield was in the order of 10−3 mol einsten−1. Several parameters were studied, such as solution pH, the presence of nitrate ions and humic acids, and the effect of water matrix. In all cases, it was found that the presence of various organic and inorganic constituents in the aqueous matrices do not contribute significantly, either positively or negatively, to the photochemical degradation of both compounds under natural solar radiation. In a final set of photolysis experiments, the effect of the level of irradiance was studied under simulated solar radiation and it was found that the quantum yield for the direct photodegradation of both compounds remained practically constant by changing the incident solar irradiance from 28 to 50 W m−2. © 2017 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/113145
Appears in Collections: 气候减缓与适应
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作者单位: EUDIM, Escuela Universitaria de Ingeniería Mecánica, Universidad de Tarapacá, Av. General Velásquez, Arica, 1775, Chile; CIESOL, Joint Centre University of Almería-CIEMAT, Almería, Spain; Chemical Engineering Department, University of Almería, Spain; Department of Environmental Engineering, Technical University of Crete, Polytechneioupolis, Chania, GR-73100, Greece
Recommended Citation:
Reina A.C.,Martínez-Piernas A.B.,Bertakis Y.,et al. Photochemical degradation of the carbapenem antibiotics imipenem and meropenem in aqueous solutions under solar radiation[J]. Water Research,2018-01-01,128