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- W2794224092 abstract "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." @default.
- W2794224092 created "2018-03-29" @default.
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- W2794224092 date "2018-07-01" @default.
- W2794224092 modified "2023-10-18" @default.
- W2794224092 title "Interactions of natural organic matter on the surface of PVP-capped silver nanoparticle under different aqueous environment" @default.
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- W2794224092 doi "https://doi.org/10.1016/j.watres.2018.03.048" @default.
- W2794224092 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/29602088" @default.
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