Aggregation and dissolution of 4 nm ZnO nanoparticles in aqueous environments: influence of pH, ionic strength, size, and adsorption of humic acid.

By S. Bian, Imali A. Mudunkotuwa, T. Rupasinghe, V. Grassian. Langmuir, 2011

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Metal Oxide Nanoparticles Induce Minimal Phenotypic Changes in a Model Colon Gut Microbiota (2015, neutral): “…in day 2 CeO 2 conductivity may be attributed to metal ion release from the NP at this speciﬁc pH, while the decrease in conductivity for ZnO days 3 and 5 may be attributed to cellular uptake of ions, or ions being bound and made unavailable by the complex colon matrix (Bian et al. , 2011).”
Effective adsorptive removal of azo dyes over spherical ZnO nanoparticles (2019, background): “[35] Bian SW, Mudunkotuwa IA, Rupasinghe T, Grassian VH.”
Release of engineered nanomaterials from personal care products throughout their life cycle (2014, background): “Given the high solubility of ZnO (Fairbairn et al. 2011; Li et al. 2011a; Bian et al. 2011; Meulenkamp 1998) and the residence time (hours) in WWTP processes (Ma et al. 2014; Musee et al. 2014), one would expect most of the Zn to be either as Zn2?, or transformed to ZnS (Lowry et al. 2012) and zinc…”
Ecotoxicity of manufactured ZnO nanoparticles--a review. (2013, background): “Significant increase in solubility with decreasing particle size of ZnO have been reported (Bian et al., 2011; Meulenkamp, 1998; Mudunkotuwa et al., 2012; Reed et al., 2012) and increased surface area is one important reason for increased kinetic rates of dissolution (Mudunkotuwa et al., 2012).”