کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10559091 | 969218 | 2005 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Use of paper capsules for cadmium determination in biological samples by solid sampling flame 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: Use of paper capsules for cadmium determination in biological samples by solid sampling flame atomic absorption spectrometry Use of paper capsules for cadmium determination in biological samples by solid sampling flame atomic absorption spectrometry](/preview/png/10559091.png)
چکیده انگلیسی
In this study, a new device was applied for direct solid sampling flame atomic absorption spectrometry. It was used for trace determination of cadmium in biological samples (bovine and chicken liver). Test samples (0.5 to 7 mg) were weighed into small paper capsules, which were introduced into a quartz cell heated by an air-acetylene flame. Operational conditions for the proposed system were evaluated. There was no significant difference between the results obtained with the proposed system and those obtained after digestion and determination by conventional graphite furnace atomic absorption spectrometry. Good agreement was also obtained with the certified values of two reference materials. Background signals were always low. The characteristic mass was 0.34 ng and relative standard deviation was less than 8%. The limit of detection for the proposed procedure was 1.6 ng or 0.23 μg gâ 1 if a sample mass of 7 mg was used. Excluding the steps for sample preparation (drying, milling and weighing), the proposed system allows the determination of 40 test samples per hour and it can be easily adapted to conventional flame atomic absorption spectrometers.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Spectrochimica Acta Part B: Atomic Spectroscopy - Volume 60, Issue 5, 30 June 2005, Pages 583-588
Journal: Spectrochimica Acta Part B: Atomic Spectroscopy - Volume 60, Issue 5, 30 June 2005, Pages 583-588
نویسندگان
Adilson Ben da Costa, Julio Cezar Paz de Mattos, Edson Irineu Müller, José Neri Gottfried Paniz, Valderi Luiz Dressler, Ãrico Marlon de Moraes Flores,