Speciation of Cr(III) radionuclides in solutions

The speciation of Cr(III) radionuclides in solutions within the concentration range 10−6–10−2 M at pH 1–12 was studied. Adsorption on the glass surface, ion exchange, migration in the electric field, centrifugation, dialysis, and ultrafiltration were used. It was found that, at a concentration of 10...

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Veröffentlicht in:	Radiochemistry (New York, N.Y.) N.Y.), 2006-07, Vol.48 (4), p.365-368
Hauptverfasser:	Davydov, Yu. P., Voronik, N. I., Davydov, D. Yu, Titov, A. S.
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Sprache:	eng
Schlagworte:	Electric fields Ion exchange Radioisotopes Speciation Trivalent chromium Ultrafiltration
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container_title	Radiochemistry (New York, N.Y.)
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creator	Davydov, Yu. P. Voronik, N. I. Davydov, D. Yu Titov, A. S.
description	The speciation of Cr(III) radionuclides in solutions within the concentration range 10−6–10−2 M at pH 1–12 was studied. Adsorption on the glass surface, ion exchange, migration in the electric field, centrifugation, dialysis, and ultrafiltration were used. It was found that, at a concentration of 10−6 M at pH 1.0–4.4, Cr(III) exists in the solution as a monomeric species, and at pH > 4 it exhibits colloidal properties. At pH 1.0–3.4, Cr(III) exists in form of hydrated cations Cr(H2O)3+6. At pH > 3.4, they are hydrolysed with formation of mononuclear hydroxo complexes Cr(OH)2+ [Kh (3.35 ⊥ 0.15) × 10−5]. At the Cr(III) concentration exceeding 1 × 10−4 M, binuclear hydroxo complexes Cr2(OH)q are formed.
doi_str_mv	10.1134/S1066362206040096
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P. ; Voronik, N. I. ; Davydov, D. Yu ; Titov, A. S.</creator><creatorcontrib>Davydov, Yu. P. ; Voronik, N. I. ; Davydov, D. Yu ; Titov, A. S.</creatorcontrib><description>The speciation of Cr(III) radionuclides in solutions within the concentration range 10−6–10−2 M at pH 1–12 was studied. Adsorption on the glass surface, ion exchange, migration in the electric field, centrifugation, dialysis, and ultrafiltration were used. It was found that, at a concentration of 10−6 M at pH 1.0–4.4, Cr(III) exists in the solution as a monomeric species, and at pH > 4 it exhibits colloidal properties. At pH 1.0–3.4, Cr(III) exists in form of hydrated cations Cr(H2O)3+6. At pH > 3.4, they are hydrolysed with formation of mononuclear hydroxo complexes Cr(OH)2+ [Kh (3.35 ⊥ 0.15) × 10−5]. At the Cr(III) concentration exceeding 1 × 10−4 M, binuclear hydroxo complexes Cr2(OH)q are formed.</description><identifier>ISSN: 1066-3622</identifier><identifier>EISSN: 1608-3288</identifier><identifier>DOI: 10.1134/S1066362206040096</identifier><language>eng</language><publisher>New York: Springer Nature B.V</publisher><subject>Electric fields ; Ion exchange ; Radioisotopes ; Speciation ; Trivalent chromium ; Ultrafiltration</subject><ispartof>Radiochemistry (New York, N.Y.), 2006-07, Vol.48 (4), p.365-368</ispartof><rights>Pleiades Publishing, Inc. 2006.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c273t-54405d6d3c3a9e1131f1e90310f1943837eee52d57bcab9d57623b952cdf631d3</citedby><cites>FETCH-LOGICAL-c273t-54405d6d3c3a9e1131f1e90310f1943837eee52d57bcab9d57623b952cdf631d3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,778,782,27907,27908</link.rule.ids></links><search><creatorcontrib>Davydov, Yu. 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At the Cr(III) concentration exceeding 1 × 10−4 M, binuclear hydroxo complexes Cr2(OH)q are formed.</description><subject>Electric fields</subject><subject>Ion exchange</subject><subject>Radioisotopes</subject><subject>Speciation</subject><subject>Trivalent chromium</subject><subject>Ultrafiltration</subject><issn>1066-3622</issn><issn>1608-3288</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2006</creationdate><recordtype>article</recordtype><recordid>eNplkE1LxDAQhoMouK7-AG8FL3qozmTStD1KcbWw4GH1XNJ8QJfa1qQ9-O9NWW-e3mHeh_l4GbtFeEQk8XRAkJIk5yBBAJTyjG1QQpESL4rzWEc7Xf1LdhXCEQAKlMWGwWGyulNzNw7J6JLK39d1_ZB4ZWJn0X1nbEi6IQljv6xQuGYXTvXB3vzpln3uXj6qt3T__lpXz_tU85zmNBMCMiMNaVKljSeiQ1sCITgsBRWUW2szbrK81aoto0pObZlxbZwkNLRld6e5kx-_Fxvm5jgufogrGy6lEDnGNyOFJ0r7MQRvXTP57kv5nwahWYNp_gVDv60dUvs</recordid><startdate>20060701</startdate><enddate>20060701</enddate><creator>Davydov, Yu. P.</creator><creator>Voronik, N. I.</creator><creator>Davydov, D. 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Yu</creatorcontrib><creatorcontrib>Titov, A. S.</creatorcontrib><collection>CrossRef</collection><jtitle>Radiochemistry (New York, N.Y.)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Davydov, Yu. P.</au><au>Voronik, N. I.</au><au>Davydov, D. Yu</au><au>Titov, A. S.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Speciation of Cr(III) radionuclides in solutions</atitle><jtitle>Radiochemistry (New York, N.Y.)</jtitle><date>2006-07-01</date><risdate>2006</risdate><volume>48</volume><issue>4</issue><spage>365</spage><epage>368</epage><pages>365-368</pages><issn>1066-3622</issn><eissn>1608-3288</eissn><abstract>The speciation of Cr(III) radionuclides in solutions within the concentration range 10−6–10−2 M at pH 1–12 was studied. Adsorption on the glass surface, ion exchange, migration in the electric field, centrifugation, dialysis, and ultrafiltration were used. It was found that, at a concentration of 10−6 M at pH 1.0–4.4, Cr(III) exists in the solution as a monomeric species, and at pH > 4 it exhibits colloidal properties. At pH 1.0–3.4, Cr(III) exists in form of hydrated cations Cr(H2O)3+6. At pH > 3.4, they are hydrolysed with formation of mononuclear hydroxo complexes Cr(OH)2+ [Kh (3.35 ⊥ 0.15) × 10−5]. At the Cr(III) concentration exceeding 1 × 10−4 M, binuclear hydroxo complexes Cr2(OH)q are formed.</abstract><cop>New York</cop><pub>Springer Nature B.V</pub><doi>10.1134/S1066362206040096</doi><tpages>4</tpages></addata></record>
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title	Speciation of Cr(III) radionuclides in solutions
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