ヨウ素酸、(化合物)ウ素酸塩
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出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2017/09/23 01:58:00」(JST)
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Space-filling model of the iodate anion
An iodate is a conjugate base of iodic acid.[1] In the iodate anion, iodine is bonded to three oxygen atoms and the molecular formula is IO−
3. The molecular geometry of iodate is trigonal pyramidal.
Iodate can be obtained by reducing periodate with a thioether. The byproduct of the reaction is a sulfoxide.[2]
Iodates are a class of chemical compounds containing this group. Examples are sodium iodate (NaIO3), silver iodate (AgIO3), and calcium iodate (Ca(IO3)2). Iodates resemble chlorates with iodine instead of chlorine.
In acid conditions, iodic acid is formed. Potassium hydrogen iodate (KH(IO3)2) is a double salt of potassium iodate and iodic acid and an acid as well. Iodates are used in the iodine clock reaction.
Potassium iodate, like potassium iodide, has been issued as a prophylaxis against radioiodine absorption in some countries.[3][4]
Other oxyanions
Iodine can assume oxidation states of −1, +1, +3, +5, or +7. A number of neutral iodine oxides are also known.
| Iodine oxidation state |
−1 |
+1 |
+3 |
+5 |
+7 |
| Name |
iodide |
hypoiodite |
iodite |
iodate |
periodate |
| Formula |
I− |
IO− |
IO−
2 |
IO−
3 |
IO−
4 or IO5−
6 |
References
- ^ Merriam-Webster definition
- ^ Qiu, Chao; Sheng Han; Xingguo Cheng; Tianhui Ren (2005). "Distribution of Thioethers in Hydrotreated Transformer Base Oil by Oxidation and ICP-AES Analysis" (abstract). Industrial & Engineering Chemistry Research. 44 (11): 4151–4155. doi:10.1021/ie048833b. Retrieved 2007-05-03.
Thioethers can be oxidized to sulfoxides by periodate, and periodate is reduced to iodate
- ^ "Archived copy". Archived from the original on 2013-10-17. Retrieved 2013-04-08.
- ^ http://www.dohc.ie/press/releases/2008/20080403c.html
UpToDate Contents
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- 1. ヨード欠乏症 iodine deficiency disorders
English Journal
- Speciation of the bio-available iodine and bromine forms in edible seaweed by high performance liquid chromatography hyphenated with inductively coupled plasma-mass spectrometry.
- Romarís-Hortas V, Bermejo-Barrera P, Moreda-Piñeiro J, Moreda-Piñeiro A.SourceDepartment of Analytical Chemistry, Nutrition and Bromatology, Faculty of Chemistry, University of Santiago de Compostela, Avenida das Ciencias, s/n. 15782 - Santiago de Compostela, Spain.
- Analytica chimica acta.Anal Chim Acta.2012 Oct 1;745C:24-32. Epub 2012 Aug 1.
- A bioavailability study based on an in vitro dialyzability approach has been applied to assess the bio-available fractions of iodine and bromine species from edible seaweed. Iodide, iodate, 3-iodo-tyrosine (MIT), 3,5-diiodo-tyrosine (DIT), bromide and bromate were separated by anion exchange chromat
- PMID 22938602
- 127I and 129I species and transformation in the Baltic Proper, Kattegat and Skagerrak basins.
- Yi P, Aldahan A, Possnert G, Hou X, Hansen V, Wang B.AbstractOccurrence of anthropogenic 129I in seawater has provided invaluable information about water circulation and exchange rates, but results on 129I species (iodide and iodate) are limited and only available for surface water. We here present the first extensive results on 129I and 127I species in samples of seawater depth profiles which were collected in August 2006 and April 2007 in the Skagerrak, Kattegat and Baltic Proper. The results expose ≤ 10% annual reduction of iodate as 129I is transported from the English Channel along the Dutch coast and German Bight into the Skagerrak and Kattegat. The results also suggest strong variability between surface and bottom seawater with respect to the predominant iodine species. Distribution of iodide and iodate of both 127I and 129I in the Kattegat mainly reflects water mixing process rather than speciation transformation. In water of the Baltic Proper, high 127I-/127IO3- and 129I-/129IO3- values suggest effective reduction of iodate with a maximum rate of 8×10-7 (127IO3-) and 6×10-14 (129IO3-) (g/m3.day). The reduction process of iodate seems to be related to decomposition of organic matter and photochemically-induced reactions.
- Environmental science & technology.Environ Sci Technol.2012 Sep 19. [Epub ahead of print]
- Occurrence of anthropogenic 129I in seawater has provided invaluable information about water circulation and exchange rates, but results on 129I species (iodide and iodate) are limited and only available for surface water. We here present the first extensive results on 129I and 127I species in samp
- PMID 22989332
Japanese Journal
- 海水中の微量ヨウ素分析─イオンクロマトグラフィーとキャピラリーゾーン電気泳動法の利用─
- 伊藤 一明,竹田 一彦,廣川 健
- 分析化学 68(4), 227-239, 2019
- <p>海水中の無機ヨウ素は，ヨウ化物イオン（I<sup>−</sup>）とヨウ素酸イオン（IO<sub>3</sub><sup>−</sup>）として存在している．それらのイオンクロマトグラフィー（IC）とキャピラリーゾーン電気泳動法（CZE）による測定を検討した．ICでは低イオン交換容量（0.03 meq. mL …
- NAID 130007650333
- Absence of histopathological changes in the retina of zebrafish treated with sodium iodate
- SADAMOTO Kazuyo,YAMAGIWA Yoshinori,SAKAKI Hideyuki,KURATA Masaaki
- Ｔｈｅ Ｊｏｕｒｎａｌ ｏｆ Ｖｅｔｅｒｉｎａｒｙ Ｍｅｄｉｃａｌ Ｓｃｉｅｎｃｅ 80(6), 901-908, 2018
- … We investigated the retinal degeneration in zebrafish, using typical retinal toxicants, mainly sodium iodate and N-methyl-N-nitrosourea (MNU). … No histopathological changes were found after sodium iodate exposure at 1.0 mM for 5 or 7 days in the retina of larval, juvenile, and adult zebrafish. … There were also no obvious histopathological changes in the retina of adult zebrafish at 0.1 mM, even after 30 days treatment with sodium iodate. …
- NAID 130007384656
- Absence of histopathological changes in the retina of zebrafish treated with sodium iodate
- SADAMOTO Kazuyo,YAMAGIWA Yoshinori,SAKAKI Hideyuki,KURATA Masaaki
- Ｔｈｅ Ｊｏｕｒｎａｌ ｏｆ Ｖｅｔｅｒｉｎａｒｙ Ｍｅｄｉｃａｌ Ｓｃｉｅｎｃｅ, 2018
- … We investigated the retinal degeneration in zebrafish, using typical retinal toxicants, mainly sodium iodate and N-methyl-N-nitrosourea. … No histopathological changes were found after sodium iodate exposure at 1.0 mM for 5 or 7 days in the retina of larval, juvenile, and adult zebrafish. … There were also no obvious histopathological changes in the retina of adult zebrafish at 0.1 mM, even after 30 days treatment with sodium iodate. …
- NAID 130006690048
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過ヨウ素酸、過ヨウ素酸塩
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- periodic acid