کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10560192 | 969708 | 2005 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Cathodic adsorptive stripping voltammetric determination of uranium (VI) complexed with 2, 6-pyridinedicarboxylic acid
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
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چکیده انگلیسی
Uranium (VI) (U(VI)) forms a complex with dipicolinic acid (2, 6-pyridinedicarboxylic acid).This complex can be used for a highly sensitive and selective determination of uranium by adsorptive cathodic stripping voltammetry (ACSV) using a hanging mercury drop electrode (HMDE) as working electrode. Influence of effective parameters such as pH, concentration of ligand, accumulation potential and accumulation time on the sensitivity and selectivity were studied. The detection limit (3Ï of the blank value) obtained under the optimal experimental conditions is 0.27 Ã 10â9Â M after 150Â s of the accumulation time. The peak current is proportional to the concentration of U(VI) in the range of 1 Ã 10â9 to 1.2 Ã 10â7Â M. The relative standard deviation of 2.5% at the 3.5 Ã 10â8Â M level was obtained. The interference of some metal ions and anions were studied. The application of this method was tested in the determination of uranium in synthetic and natural water samples.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Talanta - Volume 65, Issue 1, 15 January 2005, Pages 62-66
Journal: Talanta - Volume 65, Issue 1, 15 January 2005, Pages 62-66
نویسندگان
M.B. Gholivand, H.Rashidi Nassab, H. Fazeli,