セレン酸、(化合物)セレン酸塩
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出典(authority):フリー百科事典『ウィキペディア(Wikipedia)』「2015/12/03 14:40:19」(JST)
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The selenate ion is SeO42−.
Selenates are analogous to sulfates and have similar chemistry. They are highly soluble in aqueous solutions at ambient temperatures.
Unlike sulfate, selenate is a somewhat good oxidizer; it can be reduced to selenite or selenium.
In strongly acidic conditions, the hydrogen selenate ion, HSeO4−, is formed. It corresponds to the selenic acid, H2SeO4, which is a strong acid and can in its concentrated form dissolve gold.
The element selenium exhibits several valence states. Selenate is the least reduced, followed by selenite, and elemental selenium. The valence state is an important factor to the toxicity of selenium. Selenate is the form required by organisms that need selenium as a micronutrient. These organisms have the ability to acquire, metabolize and excrete selenium. The level at which selenium becomes toxic varies from species to species and is related to other environmental factors like pH and alkalinity that influence the concentration of selenite over selenate.
Selenate and other forms of selenium are highest in areas where ancient seas have evaporated. These areas are enriched in selenium and over millennia, biologic adaptation has occurred.
English Journal
- Variations in the accumulation, localization and rate of metabolization of selenium in mature Zea mays plants supplied with selenite or selenate.
- Longchamp M1, Castrec-Rouelle M2, Biron P3, Bariac T3.
- Food chemistry.Food Chem.2015 Sep 1;182:128-35. doi: 10.1016/j.foodchem.2015.02.137. Epub 2015 Mar 5.
- Quantification of selenium bioavailability from foods is a key challenge following the discovery of the antioxidant role of this micronutrient in human health. This study presents the uptake, accumulation and rate of metabolization in mature Zea mays plants grown in hydroponic solution supplemented
- PMID 25842318
- Effects of nationwide addition of selenium to fertilizers on foods, and animal and human health in Finland: From deficiency to optimal selenium status of the population.
- Alfthan G1, Eurola M2, Ekholm P3, Venäläinen ER4, Root T4, Korkalainen K4, Hartikainen H3, Salminen P5, Hietaniemi V2, Aspila P2, Aro A6; Selenium Working Group.
- Journal of trace elements in medicine and biology : organ of the Society for Minerals and Trace Elements (GMS).J Trace Elem Med Biol.2015 Jul;31:142-147. doi: 10.1016/j.jtemb.2014.04.009. Epub 2014 May 20.
- Despite different geological features the Nordic countries are generally selenium-poor areas. In each country various factors such as food importation and life-style determine the selenium (Se) intake. Due to an extremely low Se intake in the 1970s in Finland, 0.025mg/day, an official decision was m
- PMID 24908353
- High Efficiency Adsorption and Removal of Selenate and Selenite from Water Using Metal-Organic Frameworks.
- Howarth AJ1, Katz MJ1, Wang TC1, Platero-Prats AE2, Chapman KW2, Hupp JT1, Farha OK1,3.
- Journal of the American Chemical Society.J Am Chem Soc.2015 Jun 2. [Epub ahead of print]
- A series of zirconium-based, metal-organic frameworks (MOFs) were tested for their ability to adsorb and remove selenate and selenite anions from aqueous solutions. MOFs were tested for adsorption capacity and uptake time at different concentrations. NU-1000 was shown to have the highest adsorption
- PMID 26000611
Japanese Journal
- Reductive Reaction of Selenate with Hydrazine over TiO2-supported Pt Catalyst in Aqueous Solution
- Zhao Jinxian,Matsune Hideki,Takenaka Sakae,Kishida Masahiro
- Chemistry Letters advpub(0), 2015
- … Although there has been no reports of the catalytic reaction of selenate over heterogeneous catalysts in aqueous solution, we found that titania-supported Pt catalysts exhibited significantly high activity for the reduction of selenate with hydrazine. … Therefore, it was firstly demonstrated that heterogeneous catalysts are effective for removal of selenate from aqueous solution. …
- NAID 130005095078
- Complementary Use of LC-ICP-MS and LC-ESI-Q-TOF-MS for Selenium Speciation
- ANAN Yasumi,NAKAJIMA Genki,OGRA Yasumitsu
- Analytical Sciences 31(6), 561-564, 2015
- … We demonstrated the complementary use of inductively coupled plasma–mass spectrometry (ICP-MS) and electrospray ionization quadrupole time-of-flight mass spectrometry (ESI-Q-TOF-MS) for the analysis of Se-containing compounds, such as selenate, selenomethionine (SeMet), and trimethylselenonium ion (TMSe), found in biological samples. …
- NAID 130005075709
- 菊地 英治,渡邊 亮栄
- Journal of MMIJ : Journal of the Mining and Materials Processing Institute of Japan 130(5), 162-166, 2014-05
- NAID 40020093299
Related Links
- Selenate definition, a salt or ester of selenic acid. See more. Thesaurus Translate Puzzles & Games Word of the Day Blog Slideshows Apps by Dictionary My Account Log Out Log In follow Dictionary.com Dictionary Thesaurus ...
- How would you define selenate? Add your definition here. Words near selenate in the dictionary selegiline selen-Selena selenane selenate selenates selenatian Selene selenenic selenenic-acid Top Rated Word Lists Words ...
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