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- W414605028 abstract "リン酸水素ビス(2-エチルヘキシル)(以下B2EHPと略す)を担持したオクタデシルシリル化シリカゲル粒子(以下ODSと略す)の,Pm3+を除く一連の希土類元素イオンに対する吸着特性を検討した.得られた結果に基づいて,直径1cm,長さ23cmのB2EHP担持ODS粒子を固定相,0.20M(1M=1mol/dm3)-1.2Mの希塩酸を移動相として用いるフラッシュクロマトグラフ法による希土類元素イオソのカラム分離を行い,La-Ce,Ce-Pr,Sm-Eu,Eu-Gd及びTb-Dyの原子番号が隣接する各イオンを100cm3/h,45℃ の条件下に分離度1以上で完全に相互分離した.しかし,Pr-Ndはその小さい分離係数から推定できるように,分離度が0.87で相互分離は不完全であった.これらは展開速度を遅くして初めて完全に相互分離できた.また,Hoより高原子番号のイオンは1.8-3.5Mの希塩酸を30cm3/h,45℃ で展開することによりそれぞれ原子番号が隣接する各イオンから分離できた.しかし,分配係数の値が最も接近しており全イオン中で分離係数,Sfが最も小さいY-Er(Sf=1.10)は,その値から予想されるように分離度が0.52で,相互分離は不完全であった." @default.
- W414605028 created "2016-06-24" @default.
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- W414605028 date "1995-01-01" @default.
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- W414605028 title "Column Separation of Rare-earth Metal Ions by Flash Chromatography Using Octadecylsilylated Silica Gel Particles Loaded with Bis(2-ethylhexyl) hydrogenphosphate." @default.
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- W414605028 doi "https://doi.org/10.1246/nikkashi.1995.518" @default.
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