{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,3]],"date-time":"2026-10-03T08:33:41Z","timestamp":1791016421825,"version":"4.1.0"},"reference-count":22,"publisher":"Wiley","issue":"10","license":[{"start":{"date-parts":[[2007,4,19]],"date-time":"2007-04-19T00:00:00Z","timestamp":1176940800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Electrophoresis"],"published-print":{"date-parts":[[2007,5]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>A CE method was developed for the simultaneous determination of Zr(IV) and Hf(IV) at trace levels. A lacunary Keggin\u2010type [PW<jats:sub>11<\/jats:sub>O<jats:sub>39<\/jats:sub>]<jats:sup>7\u2212<\/jats:sup> ligand reacted quantitatively with a mixture of trace amounts of Zr(IV) and Hf(IV) to form the so\u2010called ternary Keggin\u2010type anions [P(Zr<jats:sup>IV<\/jats:sup>W<jats:sub>11<\/jats:sub>)O<jats:sub>40<\/jats:sub>]<jats:sup>5\u2212<\/jats:sup> and [P(Hf<jats:sup>IV<\/jats:sup>W<jats:sub>11<\/jats:sub>)O<jats:sub>40<\/jats:sub>]<jats:sup>5\u2212<\/jats:sup> in 0.010\u2005M monochloroacetate buffer (pH\u20052.2). Since both ternary anions possessed different electrophoretic mobilities and high molar absorptivities in the UV region, Zr(IV) and Hf(IV) were determined simultaneously with direct UV detection at 258\u2005nm. Each peak height was linearly dependent on the concentration of Zr(IV) or Hf(IV) in the range of 5.0\u00d710<jats:sup>\u22127<\/jats:sup>\u20131.0\u00d710<jats:sup>\u22125<\/jats:sup>\u2005M; a detection limit of 2\u00d710<jats:sup>\u22127<\/jats:sup>\u2005M was achieved. The utility of the proposed CE method was demonstrated for the simultaneous determination of Zr(IV) and Hf(IV) in natural water samples with satisfactory results.<\/jats:p>","DOI":"10.1002\/elps.200600633","type":"journal-article","created":{"date-parts":[[2007,4,19]],"date-time":"2007-04-19T10:03:31Z","timestamp":1176977011000},"page":"1525-1529","source":"Crossref","is-referenced-by-count":12,"title":["Simultaneous determination of Zr(IV) and Hf(IV) by CE using precolumn complexation with a [PW<sub>11<\/sub>O<sub>39<\/sub>]<sup>7\u2212<\/sup> ligand"],"prefix":"10.1002","volume":"28","author":[{"given":"Sadayuki","family":"Himeno","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Eri","family":"Kitano","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Norimitsu","family":"Chaen","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2007,5,10]]},"reference":[{"key":"e_1_2_1_2_2","doi-asserted-by":"publisher","DOI":"10.1021\/ac00145a003"},{"key":"e_1_2_1_3_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0039-9140(96)02117-0"},{"key":"e_1_2_1_4_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0003-2670(98)00037-3"},{"key":"e_1_2_1_5_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0039-9140(03)00041-9"},{"key":"e_1_2_1_6_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0003-2670(02)00076-4"},{"key":"e_1_2_1_7_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0039-9140(99)00262-3"},{"key":"e_1_2_1_8_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.jcis.2005.12.005"},{"key":"e_1_2_1_9_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0039-9140(96)02032-2"},{"key":"e_1_2_1_10_2","doi-asserted-by":"publisher","DOI":"10.1016\/S1383-5866(01)00203-9"},{"key":"e_1_2_1_11_2","doi-asserted-by":"publisher","DOI":"10.1002\/elps.200305407"},{"key":"e_1_2_1_12_2","doi-asserted-by":"publisher","DOI":"10.2116\/analsci.14.369"},{"key":"e_1_2_1_13_2","doi-asserted-by":"publisher","DOI":"10.2116\/analsci.15.725"},{"key":"e_1_2_1_14_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0021-9673(01)01354-1"},{"key":"e_1_2_1_15_2","doi-asserted-by":"publisher","DOI":"10.1002\/1615-9314(20020501)25:7<438::AID-JSSC438>3.0.CO;2-S"},{"key":"e_1_2_1_16_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0039-9140(03)00366-7"},{"key":"e_1_2_1_17_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.talanta.2006.05.039"},{"key":"e_1_2_1_18_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0021-9673(96)00649-8"},{"key":"e_1_2_1_19_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0021-9673(97)00373-7"},{"key":"e_1_2_1_20_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0021-9673(98)01005-X"},{"key":"e_1_2_1_21_2","doi-asserted-by":"publisher","DOI":"10.1246\/bcsj.78.1463"},{"key":"e_1_2_1_22_2","doi-asserted-by":"publisher","DOI":"10.1021\/ic0490829"},{"key":"e_1_2_1_23_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.molcata.2005.01.036"}],"container-title":["ELECTROPHORESIS"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.wiley.com\/onlinelibrary\/tdm\/v1\/articles\/10.1002%2Felps.200600633","content-type":"unspecified","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/analyticalsciencejournals.onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/elps.200600633","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,15]],"date-time":"2025-10-15T13:39:55Z","timestamp":1760535595000},"score":1,"resource":{"primary":{"URL":"https:\/\/analyticalsciencejournals.onlinelibrary.wiley.com\/doi\/10.1002\/elps.200600633"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2007,5]]},"references-count":22,"journal-issue":{"issue":"10","published-print":{"date-parts":[[2007,5]]}},"alternative-id":["10.1002\/elps.200600633"],"URL":"https:\/\/doi.org\/10.1002\/elps.200600633","archive":["Portico"],"relation":{},"ISSN":["0173-0835","1522-2683"],"issn-type":[{"value":"0173-0835","type":"print"},{"value":"1522-2683","type":"electronic"}],"subject":[],"published":{"date-parts":[[2007,5]]}}}