کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1169300 960629 2009 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Determination of beryllium by electrothermal atomic absorption spectrometry using tungsten surfaces and zirconium modifier
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Determination of beryllium by electrothermal atomic absorption spectrometry using tungsten surfaces and zirconium modifier
چکیده انگلیسی

Electrothermal atomization of beryllium from graphite and tungsten surfaces was compared with and without the use of various chemical modifiers. Tungsten proved to be the best substrate, giving the more sensitive integrated atomic absorption signals of beryllium. Tungsten platform atomization with zirconium as a chemical modifier was used for the determination of beryllium in several NIST SRM certified reference samples, with good agreement obtained between the results found and the certified values. The precision of the measurements (at 10 μg L−1), the limit of detection (3σ), and the characteristic mass of beryllium were 2.50%, 0.009 μg L−1 and 0.42 pg, respectively.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Analytica Chimica Acta - Volume 636, Issue 2, 23 March 2009, Pages 158–162
نویسندگان
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