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|
| Type |
Award Lecture in Division |
| Area |
R&D beyond Carbon Society I |
| Room No. |
Room 301 |
| Time |
THU 13:30-: |
| Code |
ENVR-1 |
| Subject |
Unique chemical processes in ice and its environmental impacts |
| Authors |
Kitae Kim
Korea Polar Research Institute, Korea |
| Abstract |
In general, most chemical reactions are slowed down when temperature drops according to the Arrhenius equation. However, specific chemical preocesses are accelerated in ice phase. Takenaka et. al., found that the oxidation of NO2- to NO3- in the presence of oxygen was significantly ehnaced by freezing.(105 times accelereated compared to the aqueous solution) Although the chemical processes in frozen state play an significant role on various Earth’s system, they have rarely studied. The environmental fate, bioavailability, mobility, and toxicity of metals or inorganic elements are controlled by their redox speciation. In this talk, I want to introduce our previous results(1. enhanced chemical dissolution of metal oxide particles in ice, 2. accelerated chemical transformation and toxicity decrease of harmful heavy metals in ice, 3.enhanced oxidation of iodide to reactive iodine species in ice and release to the gas phase) and future research topic about unique chemical transformation processes in ice phase. |
| E-mail |
ktkim@kopri.re.kr |
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120th General Meeting of the KCS