DOI: 10.1016/j.watres.2018.03.048
Scopus记录号: 2-s2.0-85046017429
论文题名: Interactions of natural organic matter on the surface of PVP-capped silver nanoparticle under different aqueous environment
作者: Wang X. ; Fan W. ; Dong Z. ; Liang D. ; Zhou T.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 138 起始页码: 224
结束页码: 233
语种: 英语
英文关键词: Bovine serum albumin
; Escherichia coli
; Humic acid
; Reactive oxygen species
; Silver nanoparticle
Scopus关键词: Biogeochemistry
; Body fluids
; Escherichia coli
; Mammals
; Metal nanoparticles
; Organic acids
; Seawater effects
; Sulfur
; Surface plasmon resonance
; Toxicity
; Aqueous environment
; Bovine serum albumins
; Calorimetric measurements
; Humic acid
; Humic substances
; Isothermal titration
; Natural organic matters
; Reactive oxygen species
; Silver nanoparticles
; bovine serum albumin
; calcium ion
; fresh water
; humic acid
; magnesium ion
; natural organic matter
; povidone
; reactive oxygen metabolite
; sea water
; silver nanoparticle
; bovine serum albumin
; fresh water
; metal nanoparticle
; povidone
; sea water
; silver
; adsorption
; aqueous solution
; coliform bacterium
; freshwater
; humic acid
; humic substance
; nanoparticle
; organic matter
; polymer
; protein
; reactive oxygen species
; seawater
; silver
; toxicity
; adsorption
; aquatic environment
; Article
; complex formation
; Escherichia coli
; fluorescence
; isothermal titration calorimetry
; nonhuman
; polyacrylamide gel electrophoresis
; priority journal
; zeta potential
; chemistry
; drug effect
; humic substance
; metabolism
; toxicity
; water pollutant
; Bovinae
; Escherichia coli
; Escherichia coli
; Fresh Water
; Humic Substances
; Metal Nanoparticles
; Povidone
; Reactive Oxygen Species
; Seawater
; Serum Albumin, Bovine
; Silver
; Water Pollutants
英文摘要: It is now widely accepted that coating on the nano-surface would critically dictate the uptake and cytotoxicity of engineering nanomaterials. However, the influence of natural organic matter (NOM) on the surface is quite limited to humic substances, while the diversity of NOM is neglected. In the present study, we tried to investigate the change of surface in the coexistence of bovine serum albumin (BSA) and humic acid (HA). The isothermal titration calorimetric measurements show that HA can combine with BSA in both freshwater or seawater, however, the patterns are different. In freshwater, HA lowered the adsorption of BSA on PVP-capped AgNPs through complexation with BSA, which prevented the contact of sulfur in BSA with PVP-AgNPs. Then in seawater, BSA retained its sulfur availability to bind with PVP-AgNPs. Furthermore, the toxicity of PVP-AgNPs incubated in the BSA/HA solution was evaluated by measuring the level of reactive oxygen species generated by Escherichia coli. The results indicated that, in seawater, the adsorbed BSA promoted the toxicity of PVP-AgNPs in the presence of Ca2+ and Mg2+, but the presence of HA limited this effect. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112780
Appears in Collections: 气候减缓与适应
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作者单位: School of Space and Environment, Beihang University, Beijing, 100191, China
Recommended Citation:
Wang X.,Fan W.,Dong Z.,et al. Interactions of natural organic matter on the surface of PVP-capped silver nanoparticle under different aqueous environment[J]. Water Research,2018-01-01,138