کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10559019 | 969204 | 2005 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
In situ trapping of stibine in externally heated quartz tube atomizers for atomic absorption spectrometry
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: In situ trapping of stibine in externally heated quartz tube atomizers for atomic absorption spectrometry In situ trapping of stibine in externally heated quartz tube atomizers for atomic absorption spectrometry](/preview/png/10559019.png)
چکیده انگلیسی
An evaluation of an extremely simple method for antimony preconcentration based on the novel experimental approach, in situ trapping of stibine in externally heated quartz tube atomizers, is presented. The only difference to the set-up employed for the conventional operation mode is that a flow of oxygen (at stoichiometric excess over hydrogen) is introduced just upstream of the atomizer in the trapping step of the procedure. The volatilization of the trapped analyte can be performed just by switching off the oxygen inlet. The collection/volatilization efficiency (± S.D.) is 100 ± 2%. For the collection time of 300 s (sample volume of 20 ml), the preconcentration ratio and detection limit (3Ï), respectively, is 400 and 2.8 pg mlâ 1. A possible way of further improvement of the detection limit is suggested. The same approach can be analytically useful also for bismuthine (efficiency 55 ± 2%) but not for arsine, selenium hydride and tellurium hydride.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Spectrochimica Acta Part B: Atomic Spectroscopy - Volume 60, Issue 6, 15 July 2005, Pages 859-864
Journal: Spectrochimica Acta Part B: Atomic Spectroscopy - Volume 60, Issue 6, 15 July 2005, Pages 859-864
نویسندگان
Jan Kratzer, JiÅÃ DÄdina,