کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1243123 | 969654 | 2008 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Separation of U and Pu in spent nuclear fuel sample using anion-exchange-group-introduced porous polymer sheet for ICP-MS determination
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
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چکیده انگلیسی
Anion-exchange porous sheets were prepared by radiation-induced graft polymerization and subsequent chemical modifications. A diethylamino (DEA) group as an anion-exchange group was introduced into the polymer chain grafted onto a porous sheet. The DEA group-introduced porous sheet was cut into disks 13Â mm in diameter and 3Â mm in thickness to fit an empty cylindrical cartridge (DEA cartridge). The DEA sheet had a DEA group of 3.4Â mol/kg of the DEA-group-containing porous sheet and a linear velocity of 46Â m/h at a permeation pressure of 0.1Â MPa at 298Â K. The adsorption capacity of the DEA cartridge for FeCl4â as a model ion in equilibrium with 1Â g-Fe(III)/L in 10Â M HCl was 0.17Â mmol-Fe(III)/DEA cartridge. No Pu leakage during the permeation of 5Â mL of 10Â M HCl-0.1Â M HNO3 containing Pu ionic species through the DEA cartridge was observed irrespective of the permeation rate ranging from 0.3 to 80Â mL/min. A solution containing known amounts of 233U, 240Pu, and 241Am in 10Â M HCl-0.1Â M HNO3 was loaded onto the DEA cartridge. U and Pu were retained on the DEA cartridge, while Am was allowed to pass through the DEA cartridge. Subsequently, 7Â M HNO3 and 1Â M HCl as eluents were permeated to elute U and Pu from the DEA cartridge, respectively. The decontamination factor of U in a Pu fraction, defined by dividing the activity of U in the feed solution by that of U in the Pu fraction, was 2.7Â ÃÂ 105, which is desirable for the highly accurate ICP-MS determination of Pu for samples containing both U and Pu. The method using the DEA cartridge was validated by measuring isotopic compositions and quantities of U and Pu in a spent nuclear fuel sample by double-focusing magnetic sector ICP-MS.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Talanta - Volume 77, Issue 2, 15 December 2008, Pages 695-700
Journal: Talanta - Volume 77, Issue 2, 15 December 2008, Pages 695-700
نویسندگان
Shiho Asai, Masaaki Magara, Nobuo Shinohara, Shinsuke Yamada, Masanori Nagai, Kazuyoshi Miyoshi, Kyoichi Saito,