کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10548053 | 965412 | 2005 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Speciation analysis of inorganic arsenic by microchip capillary electrophoresis coupled with hydride generation atomic fluorescence spectrometry
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
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چکیده انگلیسی
A novel method for speciation analysis of inorganic arsenic was developed by on-line hyphenating microchip capillary electrophoresis (chip-CE) with hydride generation atomic fluorescence spectrometry (HG-AFS). Baseline separation of As(III) and As(V) was achieved within 54 s by the chip-CE in a 90 mm long channel at 2500 V using a mixture of 25 mmol lâ1 H3BO3 and 0.4 mmol lâ1 CTAB (pH 8.9) as electrolyte buffer. The precisions (RSD, n = 5) ranged from 1.9 to 1.4% for migration time, 2.1 to 2.7% for peak area, and 1.8 to 2.3% for peak height for the two arsenic species at 3.0 mg lâ1 (as As) level. The detection limits (3Ï) for As(III) and As(V) based on peak height measurement were 76 and 112 μg lâ1 (as As), respectively. The recoveries of the spikes (1 mg lâ1 (as As) of As(III) and As(V)) in four locally collected water samples ranged from 93.7 to 106%.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Chromatography A - Volume 1081, Issue 2, 22 July 2005, Pages 232-237
Journal: Journal of Chromatography A - Volume 1081, Issue 2, 22 July 2005, Pages 232-237
نویسندگان
Feng Li, Dong-Dong Wang, Xiu-Ping Yan, Rong-Guo Su, Jin-Ming Lin,