{"id":10939,"date":"2022-11-11T02:34:34","date_gmt":"2022-11-10T18:34:34","guid":{"rendered":"https:\/\/www.pyrazoles-derivatives.com\/?p=10939"},"modified":"2022-11-11T02:34:34","modified_gmt":"2022-11-10T18:34:34","slug":"fujino-o-s-team-published-research-in-analytica-chimica-acta-in-2000-09-07-cas-1691-93-6","status":"publish","type":"post","link":"https:\/\/www.pyrazoles-derivatives.com\/?p=10939","title":{"rendered":"Fujino, O.&#8217;s team published research in Analytica Chimica Acta  in 2000-09-07 | CAS: 1691-93-6"},"content":{"rendered":"<p>Fujino, O. published the artcile<b><i>Determination of uranium and thorium in apatite minerals by inductively coupled plasma atomic emission spectrometry with solvent extraction separation into diisobutyl ketone<\/i><\/b>,  <a href=\"https:\/\/www.ambeed.com\/products\/1691-93-6.html\">Application In Synthesis of  1691-93-6<\/a>,  the main research area is  uranium thorium determination apatite ICP AES.<\/p>\n<p>Determination of the actinide elements (U and Th) in apatite minerals was examined by inductively coupled plasma at. emission spectrometry (ICP-AES) with solvent extraction separation The spectral interference by Ca in the apatite and the neg. interference by the macro-component (Ca phosphate) occurred simultaneously for U and Th. Therefore, after apatite mineral was treated with hot concentrated HNO3, U and Th were separated from Ca phosphate by the solvent extraction method. 1-Phenyl-3-methyl-4-trifluoroacetyl-5-pyrazolone (HPMTFP, pKa=2.56) was used as an extraction reagent. Diisobutyl ketone was selected as the extraction organic solvent. U and Th were quant. extracted over pH 2, and could be separated from the apatite composites. The organic phase was injected directly into the ICP-AES spectrometer. The U and Th contents in apatite minerals from Florida, USA, are 103 \u00b1 2.2 and 8.84 \u00b1 0.19 ppm. These results were quite comparable with those measured with ICP-mass spectrometry (ICP-MS).<\/p>\n<p>Analytica Chimica Acta published new progress about Apatite-group minerals Role: AMX (Analytical Matrix), ANST (Analytical Study). 1691-93-6 belongs to class pyrazoles-derivatives, name is 5-Methyl-2-phenyl-4-(2,2,2-trifluoroacetyl)-1H-pyrazol-3(2H)-one, and the molecular formula is C12H9F3N2O2, <a href=\"https:\/\/www.ambeed.com\/products\/1691-93-6.html\">Application In Synthesis of  1691-93-6<\/a>.<\/p>\n<p>Referemce:<br \/><a href=\"https:\/\/en.wikipedia.org\/wiki\/Pyrazole\">Pyrazole &#8211; Wikipedia<\/a>,<br \/><a href=\"https:\/\/www.sciencedirect.com\/topics\/chemistry\/pyrazoles\">Pyrazoles &#8211; an overview | ScienceDirect Topics<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Analytica Chimica Acta published new progress about Apatite-group minerals Role: AMX (Analytical Matrix), ANST (Analytical Study). 1691-93-6 belongs to class pyrazoles-derivatives, name is 5-Methyl-2-phenyl-4-(2,2,2-trifluoroacetyl)-1H-pyrazol-3(2H)-one, and the molecular formula is C12H9F3N2O2, <a href=\"https:\/\/www.ambeed.com\/products\/1691-93-6.html\">Application In Synthesis of  1691-93-6<\/a>.<\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[775,131],"tags":[740],"class_list":["post-10939","post","type-post","status-publish","format-standard","hentry","category-1691-93-6","category-pyrazoles-derivatives","tag-m-w250-300"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.9 - 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