کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1193589 1492328 2010 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Studies on the formation of atomic and molecular ions of uranium and thorium in thermal ionization mass spectrometry
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Studies on the formation of atomic and molecular ions of uranium and thorium in thermal ionization mass spectrometry
چکیده انگلیسی

Studies are reported on the formation of atomic (M+) and molecular (MO+) ions of thorium and uranium in thermal ionization mass spectrometry. The studies were performed by using different synthetic mixtures with Th/U amount ratios as 10, 1 and 0.1. The results obtained on the formation of atomic and molecular ions from these synthetic mixtures employing high purity rhenium double filament assemblies are presented. It was observed that the presence of Th on the filament during TIMS analysis of U enhances the stability of UO+ ion. Further, ThO+ ion is ideal for the isotopic analysis of Th by TIMS whereas U+ or UO+ ion may be used for the isotopic analysis of U. These studies will be extremely useful to optimize the filament heating parameters for the simultaneous/sequential isotopic analysis of Th and U by TIMS. The optimized conditions of analysis were employed for the determination of 232U in a synthetic U sample containing traces of 232Th.

Atomic and oxide ions’ formation in uranium and thorium, using their synthetic mixtures and employing thermal ionization mass spectrometry, for determination of U-232 are presented.Figure optionsDownload high-quality image (105 K)Download as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Mass Spectrometry - Volume 291, Issue 3, 15 April 2010, Pages 140–144
نویسندگان
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