کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1741694 | 1521787 | 2008 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Calcium ion selectivity and isotope effects studied by using benzo-18-crown-6 resins
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
مهندسی انرژی و فناوری های برق
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Calcium ion selectivity and isotope effects studied by using benzo-18-crown-6 resins Calcium ion selectivity and isotope effects studied by using benzo-18-crown-6 resins](/preview/png/1741694.png)
چکیده انگلیسی
The chromatography experiments using benzo-18-crown-6 resin were carried out to study isotope effects in calcium adsorption. By the elution technique with hydrochloric acid solution, it was found that the adsorption of calcium depends on the concentration of hydrochloric acid in solution and that 9 M HCl concentration is the appropriate condition for the adsorption of calcium to the cavity of benzo-18-crown-6 of which cavity size is a little larger than the diameter of calcium ion. Thereafter, the isotope fractionation of calcium in the complex formation reaction with 18-crown-6 ether was investigated by using the breakthrough technique of chromatography with above-mentioned synthesized resin and 9 M hydrochloric acid solution. The observed isotope separation coefficient ε=αâ1 was 1.9 Ã 10â3 for the isotopic pair 40Ca/48Ca.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Progress in Nuclear Energy - Volume 50, Issues 2â6, MarchâAugust 2008, Pages 510-513
Journal: Progress in Nuclear Energy - Volume 50, Issues 2â6, MarchâAugust 2008, Pages 510-513
نویسندگان
Kenji Hayasaka, Toshitaka Kaneshiki, Masao Nomura, Tatsuya Suzuki, Yasuhiko Fujii,