| Autor: |
Chunyan, Li, Asra, Hassan, Marcell, Palmai, Yu, Xie, Preston T, Snee, Brian A, Powell, Lawrence C, Murdoch, Christophe J G, Darnault |
| Rok vydání: |
2020 |
| Předmět: |
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| Zdroj: |
Environmental science and pollution research international. 28(7) |
| ISSN: |
1614-7499 |
| Popis: |
The risks of environmental exposures of quantum dot (QD) nanoparticles are increasing, but these risks are difficult to assess because fundamental questions remain about factors affecting the mobility of QDs. The objective of this study is to help address this shortcoming by evaluating the physico-chemical mechanisms controlling the transport and retention of CdSe/ZnS QDs under various environmental conditions. The approach was to run a series of laboratory-scale column experiments where QDs were transported through saturated porous media with different pH values and concentrations of citrate and Suwannee River natural organic matter (SRNOM). Numerical simulations were then conducted and compared with the laboratory data in order to evaluate parameters controlling transport. QD suspensions were injected into the column in an upward direction and ICP-MS used to analyze Cd |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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