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Effects of polyphosphates and orthophosphate on the dissolution and transformation of ZnO nanoparticles.
Chemosphere. 2017 Jun; 176:255-265.C

Abstract

The fate and toxicity of zinc oxide nanoparticles (ZnO NPs) in nature are affected by solution chemistry such as pH, anions, and natural organic matter (NOM). Inorganic polyphosphates are environmentally ubiquitous phosphorus (P) species that may change the speciation and environmental fate of ZnO NPs. In this study, the interactions of polyphosphates with ZnO NPs and the impacts on ZnO NP dissolution and transformation were investigated and compared with orthophosphate (P1). The results revealed that pyrophosphate (P2), tripolyphosphate (P3), and hexametaphosphate (P6) enhanced whereas P1 inhibited the dissolution of ZnO NPs. In addition, P1, P2, and P3 promoted the transformation of ZnO NPs into zinc phosphate (Zn-P) precipitates via interactions with dissolved Zn2+. However, P6-promoted ZnO NP dissolution was through the formation of soluble Zn-P complexes due to the strong capability of P6 to chelate with Zn2+. The transformation of ZnO NPs in the presence of P3 was affected by reaction time, pH, and P/Zn molar ratio. P3 first formed inner-sphere surface complexes on ZnO NPs, which gradually transformed into crystalline Zn2HP3O10(H2O)6 precipitates. This study provided a new perspective for understanding the reactivity of various forms of inorganic phosphate species with ZnO NPs in the natural environment.

Authors+Show Affiliations

Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture, College of Resources and Environment, Huazhong Agricultural University, Wuhan, 430070, China.Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture, College of Resources and Environment, Huazhong Agricultural University, Wuhan, 430070, China.School of Earth and Atmospheric Sciences, Georgia Institute of Technology, 311 Ferst Dr, Atlanta, GA 30324-0340, USA.Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture, College of Resources and Environment, Huazhong Agricultural University, Wuhan, 430070, China.Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture, College of Resources and Environment, Huazhong Agricultural University, Wuhan, 430070, China.Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture, College of Resources and Environment, Huazhong Agricultural University, Wuhan, 430070, China.Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture, College of Resources and Environment, Huazhong Agricultural University, Wuhan, 430070, China.Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture, College of Resources and Environment, Huazhong Agricultural University, Wuhan, 430070, China. Electronic address: fxh73@mail.hzau.edu.cn.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

28273533

Citation

Wan, Biao, et al. "Effects of Polyphosphates and Orthophosphate On the Dissolution and Transformation of ZnO Nanoparticles." Chemosphere, vol. 176, 2017, pp. 255-265.
Wan B, Yan Y, Tang Y, et al. Effects of polyphosphates and orthophosphate on the dissolution and transformation of ZnO nanoparticles. Chemosphere. 2017;176:255-265.
Wan, B., Yan, Y., Tang, Y., Bai, Y., Liu, F., Tan, W., Huang, Q., & Feng, X. (2017). Effects of polyphosphates and orthophosphate on the dissolution and transformation of ZnO nanoparticles. Chemosphere, 176, 255-265. https://doi.org/10.1016/j.chemosphere.2017.02.134
Wan B, et al. Effects of Polyphosphates and Orthophosphate On the Dissolution and Transformation of ZnO Nanoparticles. Chemosphere. 2017;176:255-265. PubMed PMID: 28273533.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Effects of polyphosphates and orthophosphate on the dissolution and transformation of ZnO nanoparticles. AU - Wan,Biao, AU - Yan,Yupeng, AU - Tang,Yuanzhi, AU - Bai,Yuge, AU - Liu,Fan, AU - Tan,Wenfeng, AU - Huang,Qiaoyun, AU - Feng,Xionghan, Y1 - 2017/02/27/ PY - 2016/07/15/received PY - 2017/02/11/revised PY - 2017/02/25/accepted PY - 2017/3/9/pubmed PY - 2017/4/30/medline PY - 2017/3/9/entrez KW - Dissolution KW - Natural environment KW - Orthophosphate KW - Polyphosphates KW - Transformation KW - ZnO nanoparticles SP - 255 EP - 265 JF - Chemosphere JO - Chemosphere VL - 176 N2 - The fate and toxicity of zinc oxide nanoparticles (ZnO NPs) in nature are affected by solution chemistry such as pH, anions, and natural organic matter (NOM). Inorganic polyphosphates are environmentally ubiquitous phosphorus (P) species that may change the speciation and environmental fate of ZnO NPs. In this study, the interactions of polyphosphates with ZnO NPs and the impacts on ZnO NP dissolution and transformation were investigated and compared with orthophosphate (P1). The results revealed that pyrophosphate (P2), tripolyphosphate (P3), and hexametaphosphate (P6) enhanced whereas P1 inhibited the dissolution of ZnO NPs. In addition, P1, P2, and P3 promoted the transformation of ZnO NPs into zinc phosphate (Zn-P) precipitates via interactions with dissolved Zn2+. However, P6-promoted ZnO NP dissolution was through the formation of soluble Zn-P complexes due to the strong capability of P6 to chelate with Zn2+. The transformation of ZnO NPs in the presence of P3 was affected by reaction time, pH, and P/Zn molar ratio. P3 first formed inner-sphere surface complexes on ZnO NPs, which gradually transformed into crystalline Zn2HP3O10(H2O)6 precipitates. This study provided a new perspective for understanding the reactivity of various forms of inorganic phosphate species with ZnO NPs in the natural environment. SN - 1879-1298 UR - https://www.unboundmedicine.com/medline/citation/28273533/Effects_of_polyphosphates_and_orthophosphate_on_the_dissolution_and_transformation_of_ZnO_nanoparticles_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0045-6535(17)30323-5 DB - PRIME DP - Unbound Medicine ER -