DOI: 10.1016/j.watres.2017.12.016
Scopus记录号: 2-s2.0-85038115693
论文题名: Abiotic degradation and environmental toxicity of ibuprofen: Roles of mineral particles and solar radiation
作者: Rubasinghege G. ; Gurung R. ; Rijal H. ; Maldonado-Torres S. ; Chan A. ; Acharya S. ; Rogelj S. ; Piyasena M.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 131 起始页码: 22
结束页码: 32
语种: 英语
英文关键词: Abiotic transformation
; Personal care products
; Pharmaceuticals
; Photo degradation
; Photo-enhanced toxicology
; Secondary products
Scopus关键词: Algae
; Bacteriology
; Degradation
; Drug products
; Image enhancement
; Kaolinite
; Solar radiation
; Toxicity
; Abiotic transformation
; Degradation products
; Environmental toxicity
; Natural environments
; Personal care products
; Pharmaceuticals and personal care products
; Photo-enhanced toxicology
; Secondary product
; Clay products
; 4 acetylbenzoic acid
; aluminum silicate
; benzoic acid derivative
; ibuprofen
; mineral
; silanol
; silicon dioxide
; unclassified drug
; abiotic factor
; bacterium
; bioassay
; clay mineral
; drug
; ecotoxicology
; green alga
; kaolinite
; photodegradation
; PPCP
; secondary metabolite
; solar radiation
; transformation
; adsorption
; Article
; Bacillus megaterium
; bacterial growth
; bacterium
; bioassay
; Chlorella
; controlled study
; degradation
; degradation kinetics
; ecotoxicity
; environmental release
; flow cytometry
; high performance liquid chromatography
; infrared spectroscopy
; liquid chromatography-mass spectrometry
; MTT assay
; nonhuman
; photodegradation
; priority journal
; Pseudoaltermonas atlantica
; reaction analysis
; reaction time
; retention time
; scanning electron microscopy
; solar radiation
; sunlight
; X ray diffraction
; algae
; Bacillus megaterium
英文摘要: The growing medical and personal needs of human populations have escalated release of pharmaceuticals and personal care products into our natural environment. This work investigates abiotic degradation pathways of a particular PPCP, ibuprofen, in the presence of a major mineral component of soil (kaolinite clay), as well as the health effects of the primary compound and its degradation products. Results from these studies showed that the rate and extent of ibuprofen degradation is greatly influenced by the presence of clay particles and solar radiation. In the absence of solar radiation, the dominant reaction mechanism was observed to be the adsorption of ibuprofen onto clay surface where surface silanol groups play a key role. In contrast, under solar radiation and in the presence of clay particles, ibuprofen breaks down to several fractions. The decay rates were at least 6-fold higher for irradiated samples compared to those of dark conditions. Toxicity of primary ibuprofen and its secondary residues were tested on three microorganisms: Bacillus megaterium, Pseudoaltermonas atlantica; and algae from the Chlorella genus. The results from the biological assays show that primary PPCP is more toxic than the mixture of secondary products. Overall, however, biological assays carried out using only 4-acetylbenzoic acid, the most abundant secondary product, show a higher toxic effect on algae compared to its parent compound. © 2017 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/113017
Appears in Collections: 气候减缓与适应
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作者单位: Department of Chemistry, New Mexico Tech, Socorro, NM 87801, United States; Department of Biology, New Mexico Tech, Socorro, NM 87801, United States
Recommended Citation:
Rubasinghege G.,Gurung R.,Rijal H.,et al. Abiotic degradation and environmental toxicity of ibuprofen: Roles of mineral particles and solar radiation[J]. Water Research,2018-01-01,131