Role of combinatorial environmental factors in the behavior and fate of ZnO nanoparticles in aqueous systems: a multiparametric analysis.
作者： Seyed Mohammad Majedi , Barry C. Kelly , Hian Kee Lee
DOI: 10.1016/J.JHAZMAT.2013.11.015
关键词: Zinc 、 Chemistry 、 Matrix (chemical analysis) 、 Organic acid 、 Aqueous solution 、 Inorganic chemistry 、 Kinetics 、 Dissolution 、 Nanoparticle 、 Electrolyte
摘要: To better understand the environmental behavior, fate, and exposure risks of engineered nanoparticles in aquatic systems, for first time, combinatorial aqueous systems were established using three-level orthogonal array design (OAD), an OA27 (3(1)(3)) matrix, to assess effects six co-varying factors (organic acid type, organic concentration, NP pH, salt content, electrolyte type) on aggregation commercial zinc oxide (ZnO NPs, mean diameter ∼41nm). A separate set experiments including temperature was conducted dissolution these NPs. The results showed that concentration pH most significant (p<0.001) influencing ZnO respectively. type content next important both dissolution. Based kinetics study aggregation, a high rate resulted decreased dissolution, such observed presence calcium chloride. Clear temperature-induced reduced further with increasing temperature. This approach demonstrates behavior may vary substantially under conditions.
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