Extractive Behavior of Magnesium Chloride and Isotopic Enrichment of Magnesium by a Crown Ether
Magnesium chloride was extracted into an organic phase including dicyclohex-ano-18-crown-6 (DC18C6). The partition coefficient showed its highest value for a liquid-liquid extraction system of 3.5 M MgCl 2 aqueous phase. Magnesium isotopes 24 Mg, 25 Mg, and 26 Mg were enriched in the system with the...
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| Veröffentlicht in: | Separation science and technology 1996-03, Vol.31 (5), p.643-654 |
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| container_title | Separation science and technology |
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| creator | Nishizawa, Kazushige Nishida, Tetsurou Miki, Takahito Yamamoto, Tadashi Hosoe, Morikazu |
| description | Magnesium chloride was extracted into an organic phase including dicyclohex-ano-18-crown-6 (DC18C6). The partition coefficient showed its highest value for a liquid-liquid extraction system of 3.5 M MgCl
2
aqueous phase. Magnesium isotopes
24
Mg,
25
Mg, and
26
Mg were enriched in the system with their respective enrichment factors. The enrichment factor for
24
Mg/
26
Mg was e = 0.0112 as a maximum value. The enrichment factors for a unit difference of mass numbers varied depending on the MgCl
2
concentrations in the aqueous phase. The isotope-recognizing ability of DC18C6 was K
c
- 1.0016, which is smaller than the separation factor due to an exchange of the aqua/dichloro complex of Mg
2+
, K
p
- 1.0040. An odd/even isotope effect was observed, and it was assigned to nuclear properties other than mass difference. Odd/even staggering associated with the optical transition of electrons offers a consistent explanation to the different behaviors of isotopes with odd or even mass numbers. |
| doi_str_mv | 10.1080/01496399608000709 |
| format | Article |
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2
aqueous phase. Magnesium isotopes
24
Mg,
25
Mg, and
26
Mg were enriched in the system with their respective enrichment factors. The enrichment factor for
24
Mg/
26
Mg was e = 0.0112 as a maximum value. The enrichment factors for a unit difference of mass numbers varied depending on the MgCl
2
concentrations in the aqueous phase. The isotope-recognizing ability of DC18C6 was K
c
- 1.0016, which is smaller than the separation factor due to an exchange of the aqua/dichloro complex of Mg
2+
, K
p
- 1.0040. An odd/even isotope effect was observed, and it was assigned to nuclear properties other than mass difference. Odd/even staggering associated with the optical transition of electrons offers a consistent explanation to the different behaviors of isotopes with odd or even mass numbers.</description><identifier>ISSN: 0149-6395</identifier><identifier>EISSN: 1520-5754</identifier><identifier>DOI: 10.1080/01496399608000709</identifier><identifier>CODEN: SSTEDS</identifier><language>eng</language><publisher>Basingstoke: Taylor & Francis Group</publisher><subject>Applied sciences ; Chemical engineering ; Crown ether ; Enrichment factor ; Exact sciences and technology ; Isotope separation ; Liquid-liquid extraction ; Magnesium isotope ; Odd/even mass number</subject><ispartof>Separation science and technology, 1996-03, Vol.31 (5), p.643-654</ispartof><rights>Copyright Taylor & Francis Group, LLC 1996</rights><rights>1996 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c427t-75c4649a0dd0c9c8af678ed05b4400bf1df2d0c4d1ceab03413bbff18aeb76043</citedby><cites>FETCH-LOGICAL-c427t-75c4649a0dd0c9c8af678ed05b4400bf1df2d0c4d1ceab03413bbff18aeb76043</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.tandfonline.com/doi/pdf/10.1080/01496399608000709$$EPDF$$P50$$Ginformaworld$$H</linktopdf><linktohtml>$$Uhttps://www.tandfonline.com/doi/full/10.1080/01496399608000709$$EHTML$$P50$$Ginformaworld$$H</linktohtml><link.rule.ids>314,776,780,27901,27902,59620,60409</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=3039991$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Nishizawa, Kazushige</creatorcontrib><creatorcontrib>Nishida, Tetsurou</creatorcontrib><creatorcontrib>Miki, Takahito</creatorcontrib><creatorcontrib>Yamamoto, Tadashi</creatorcontrib><creatorcontrib>Hosoe, Morikazu</creatorcontrib><title>Extractive Behavior of Magnesium Chloride and Isotopic Enrichment of Magnesium by a Crown Ether</title><title>Separation science and technology</title><description>Magnesium chloride was extracted into an organic phase including dicyclohex-ano-18-crown-6 (DC18C6). The partition coefficient showed its highest value for a liquid-liquid extraction system of 3.5 M MgCl
2
aqueous phase. Magnesium isotopes
24
Mg,
25
Mg, and
26
Mg were enriched in the system with their respective enrichment factors. The enrichment factor for
24
Mg/
26
Mg was e = 0.0112 as a maximum value. The enrichment factors for a unit difference of mass numbers varied depending on the MgCl
2
concentrations in the aqueous phase. The isotope-recognizing ability of DC18C6 was K
c
- 1.0016, which is smaller than the separation factor due to an exchange of the aqua/dichloro complex of Mg
2+
, K
p
- 1.0040. An odd/even isotope effect was observed, and it was assigned to nuclear properties other than mass difference. Odd/even staggering associated with the optical transition of electrons offers a consistent explanation to the different behaviors of isotopes with odd or even mass numbers.</description><subject>Applied sciences</subject><subject>Chemical engineering</subject><subject>Crown ether</subject><subject>Enrichment factor</subject><subject>Exact sciences and technology</subject><subject>Isotope separation</subject><subject>Liquid-liquid extraction</subject><subject>Magnesium isotope</subject><subject>Odd/even mass number</subject><issn>0149-6395</issn><issn>1520-5754</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1996</creationdate><recordtype>article</recordtype><recordid>eNp1kE1LAzEQhoMoWKs_wFsOXlcn3exHwIsuqxYqXvS8zObDjWw3JVlb--9NqQoinobhfZ4ZeAk5Z3DJoIQrYFzkqRB5XAAKEAdkwrIZJFmR8UMy2eVJBLJjchLCW2TKTIgJaeqP0aMc7VrTW93h2jpPnaGP-DroYN-XtOp6563SFAdF58GNbmUlrQdvZbfUw_ibbrcUaeXdZqD12Gl_So4M9kGffc0pebmrn6uHZPF0P69uFonks2JMikzynAsEpUAKWaLJi1IryFrOAVrDlJnFhCsmNbaQcpa2rTGsRN0WOfB0Stj-rvQuBK9Ns_J2iX7bMGh2DTV_GorOxd5ZYZDYG4-DtOFHTCHSgkXseo_ZwTi_xI3zvWpG3MZevp30_y-fscd5aQ</recordid><startdate>199603</startdate><enddate>199603</enddate><creator>Nishizawa, Kazushige</creator><creator>Nishida, Tetsurou</creator><creator>Miki, Takahito</creator><creator>Yamamoto, Tadashi</creator><creator>Hosoe, Morikazu</creator><general>Taylor & Francis Group</general><general>Taylor & Francis</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>199603</creationdate><title>Extractive Behavior of Magnesium Chloride and Isotopic Enrichment of Magnesium by a Crown Ether</title><author>Nishizawa, Kazushige ; Nishida, Tetsurou ; Miki, Takahito ; Yamamoto, Tadashi ; Hosoe, Morikazu</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c427t-75c4649a0dd0c9c8af678ed05b4400bf1df2d0c4d1ceab03413bbff18aeb76043</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1996</creationdate><topic>Applied sciences</topic><topic>Chemical engineering</topic><topic>Crown ether</topic><topic>Enrichment factor</topic><topic>Exact sciences and technology</topic><topic>Isotope separation</topic><topic>Liquid-liquid extraction</topic><topic>Magnesium isotope</topic><topic>Odd/even mass number</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Nishizawa, Kazushige</creatorcontrib><creatorcontrib>Nishida, Tetsurou</creatorcontrib><creatorcontrib>Miki, Takahito</creatorcontrib><creatorcontrib>Yamamoto, Tadashi</creatorcontrib><creatorcontrib>Hosoe, Morikazu</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><jtitle>Separation science and technology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Nishizawa, Kazushige</au><au>Nishida, Tetsurou</au><au>Miki, Takahito</au><au>Yamamoto, Tadashi</au><au>Hosoe, Morikazu</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Extractive Behavior of Magnesium Chloride and Isotopic Enrichment of Magnesium by a Crown Ether</atitle><jtitle>Separation science and technology</jtitle><date>1996-03</date><risdate>1996</risdate><volume>31</volume><issue>5</issue><spage>643</spage><epage>654</epage><pages>643-654</pages><issn>0149-6395</issn><eissn>1520-5754</eissn><coden>SSTEDS</coden><abstract>Magnesium chloride was extracted into an organic phase including dicyclohex-ano-18-crown-6 (DC18C6). The partition coefficient showed its highest value for a liquid-liquid extraction system of 3.5 M MgCl
2
aqueous phase. Magnesium isotopes
24
Mg,
25
Mg, and
26
Mg were enriched in the system with their respective enrichment factors. The enrichment factor for
24
Mg/
26
Mg was e = 0.0112 as a maximum value. The enrichment factors for a unit difference of mass numbers varied depending on the MgCl
2
concentrations in the aqueous phase. The isotope-recognizing ability of DC18C6 was K
c
- 1.0016, which is smaller than the separation factor due to an exchange of the aqua/dichloro complex of Mg
2+
, K
p
- 1.0040. An odd/even isotope effect was observed, and it was assigned to nuclear properties other than mass difference. Odd/even staggering associated with the optical transition of electrons offers a consistent explanation to the different behaviors of isotopes with odd or even mass numbers.</abstract><cop>Basingstoke</cop><pub>Taylor & Francis Group</pub><doi>10.1080/01496399608000709</doi><tpages>12</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0149-6395 |
| ispartof | Separation science and technology, 1996-03, Vol.31 (5), p.643-654 |
| issn | 0149-6395 1520-5754 |
| language | eng |
| recordid | cdi_crossref_primary_10_1080_01496399608000709 |
| source | Taylor & Francis |
| subjects | Applied sciences Chemical engineering Crown ether Enrichment factor Exact sciences and technology Isotope separation Liquid-liquid extraction Magnesium isotope Odd/even mass number |
| title | Extractive Behavior of Magnesium Chloride and Isotopic Enrichment of Magnesium by a Crown Ether |
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