Nitrite-Induced Activation of lodate into Molecular Iodine in Frozen Solution

Kim Kitae; Ju Jinjung; Kim Bomi; Chung Hyun Young; Vetrakova Lubica; Heger Dominik; Saiz-Lopez Alfonso; Choi Wonyong; Kim Jungwon

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Nitrite-Induced Activation of lodate into Molecular Iodine in Frozen Solution

机译：亚硝酸盐诱导的冷冻溶液中Loates活化为分子碘

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A new mechanism for the abiotic production of molecular iodine (I-2) from iodate (IO3-), which is the most abundant iodine species, in dark conditions was identified and investigated. The production of I-2 in aqueous solution containing IO3- and nitrite (NO2-) at 25 degrees C was negligible. However, the redox chemical reaction between IO3- and NO2- rapidly proceeded in frozen solution at -20 degrees C, which resulted in the production of I-2, I-, and NO3-. The rapid redox chemical reaction between IO3- and NO2- in frozen solution is ascribed to the accumulation of IO3-, NO2-, and protons in the liquid regions between ice crystals during freezing (freeze concentration effect). This freeze concentration effect was verified by confocal Raman microscopy for the solute concentration and UV-visible absorption spectroscopy with cresol red (acid-base indicator) for the proton concentration. The freezing-induced production of I-2 in the presence of IO3- and NO2- was observed under various conditions, which suggests this abiotic process for I-2 production is not restricted to a specific region and occurs in many cold regions. NO2--induced activation of IO3- to I-2 in frozen solution may help explain why the measured values of iodine are larger than the modeled values in some polar areas.

机译：鉴定并研究了在黑暗条件下由碘酸盐（IO3-）非生物生产分子碘（I-2）的新机理，碘酸盐是最丰富的碘物种。在25摄氏度下，含IO3-和亚硝酸盐（NO2-）的水溶液中I-2的产生可以忽略不计。但是，IO3-和NO2-之间的氧化还原化学反应在-20℃的冷冻溶液中迅速进行，这导致生成I-2，I-和NO3-。冷冻溶液中IO3-和NO2-之间的快速氧化还原化学反应归因于IO3，NO2-和质子在冷冻期间在冰晶之间的液体区域中的积累（冻结浓缩效应）。通过共焦拉曼显微镜对溶质浓度进行了验证，并使用了甲酚红（酸碱指示剂）对质子进行了紫外可见吸收光谱，验证了这种冻结浓缩效果。在各种条件下观察到在IO3-和NO2-存在下冷冻诱导的I-2产生，这表明这种I-2生产的非生物过程不限于特定区域，并且发生在许多寒冷地区。 NO2诱导的冷冻溶液中IO3-向I-2的活化可能有助于解释为什么在某些极地地区，碘的测量值大于模型值。

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《Environmental Science & Technology》 |2019年第9期|4892-4900|共9页
作者
Kim Kitae; Ju Jinjung; Kim Bomi; Chung Hyun Young; Vetrakova Lubica; Heger Dominik; Saiz-Lopez Alfonso; Choi Wonyong; Kim Jungwon;
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作者单位

Korea Polar Res Inst KOPRI, Incheon 21990, South Korea|UST, Dept Polar Sci, Incheon 21990, South Korea;

Hallym Univ, Dept Environm Sci & Biotechnol, Chunchon 24252, Gangwon Do, South Korea;

Korea Polar Res Inst KOPRI, Incheon 21990, South Korea|UST, Dept Polar Sci, Incheon 21990, South Korea;

Korea Polar Res Inst KOPRI, Incheon 21990, South Korea|UST, Dept Polar Sci, Incheon 21990, South Korea;

Masaryk Univ, Fac Sci, Dept Chem, Kamenice 5, Brno 62500, Czech Republic|Masaryk Univ, Fac Sci, Res Ctr Tox Cpds Environm RECETOX, Kamenice 5, Brno 62500, Czech Republic;

Masaryk Univ, Fac Sci, Dept Chem, Kamenice 5, Brno 62500, Czech Republic|Masaryk Univ, Fac Sci, Res Ctr Tox Cpds Environm RECETOX, Kamenice 5, Brno 62500, Czech Republic;

CSIC, Inst Phys Chem Rocasolano, Dept Atmospher Chem & Climate, Madrid 28006, Spain;

Pohang Univ Sci & Technol POSTECH, Div Environm Sci & Engn, Pohang 37673, South Korea;

Hallym Univ, Dept Environm Sci & Biotechnol, Chunchon 24252, Gangwon Do, South Korea;

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专利

1. Nitrite-Induced Activation of lodate into Molecular Iodine in Frozen Solution [J] . Kim Kitae, Ju Jinjung, Kim Bomi, Environmental Science & Technology . 2019,第9期

机译：亚硝酸盐诱导的冷冻溶液中的分子碘活化
2. Production of Molecular Iodine and Tri-iodide in the Frozen Solution of Iodide: Implication for Polar Atmosphere [J] . Kitae Kim, Akihiro Yabushita, Masanori Okumura, Environmental Science & Technology . 2016,第3期

机译：碘化物冷冻溶液中分子碘和三碘的生产：对极性大气的影响
3. Development of a Coupled Diffusion Denuder System Combined with Gas Chromatography/Mass Spectrometry for the Separation and Quantification of Molecular Iodine and the Activated Iodine Compounds Iodine Monochloride and Hypoiodous Acid in the Marine Atmosphere [J] . Ru-Jin Huang, Thorsten Hoffmann Analytical chemistry . 2009,第5期

机译：结合气相色谱/质谱联用的扩散扩散核能仪系统的分离和定量分析，用于海洋大气中分子碘和活性碘化合物碘一氯化物和次碘酸的分离和定量
4. The effect of glass transition temperatures on molecular mobilities and ice recrystallisation rates in frozen sugar solutions [C] . Martin J. Izzard Conference on Phase Change Material and Slurry in Yverdon-les-Bains . 2005

机译：玻璃化转变温度对冷冻糖溶液中分子迁移和冰重结率的影响
5. Synthesis of selected electron donors and acceptors and study of inter/intramolecular electron transfer from ruthenium(II) complexes in solution, frozen matrix and silica aerogels as the basis for optical devices. [D] . Rawashdeh, Abdel Monem M. 2003

机译：选择性电子供体和受体的合成以及溶液，冷冻基质和二氧化硅气凝胶中钌（II）配合物作为光学器件基础的分子间/分子间电子转移的研究。
6. Antiproliferative/cytotoxic effects of molecular iodine povidone-iodine and Lugols solution in different human carcinoma cell lines [O] . Harald Rösner, Wolfgang Möller, Sabine Groebner, -1

机译：分子碘聚维酮碘和Lugol溶液在不同的人类癌细胞系中的抗增殖/细胞毒性作用
7. A. The preparation of dilute, dry, nonaqueous solutions of molecular iodine inoculated with iodine-131. B. The distribution of molecular iodine between cyclohexane and aqueous solutions [O] . Garet E. Van de Steeg 1968

机译：A.用碘-131接种分子碘的稀释，干燥，非水溶液的制备。 B.环己烷和水溶液之间分子碘的分布
8. A Resonance Raman/Iodine Moessbauer Investigation of the Starch-Iodine Structure: Aqueous Solution and Iodine Vapor Preparations [R] . Teitelbaum, R. C., Ruby, S. L., Marks, T. J. 1980

机译：淀粉 - 碘结构的共振拉曼/碘穆斯堡尔研究：水溶液和碘蒸气制剂

Nitrite-Induced Activation of lodate into Molecular Iodine in Frozen Solution

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