کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
220011 463311 2009 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Adsorptive stripping voltammetric determination of vanadium(V) witch chloranilic acid using cyclic renewable mercury film silver based electrode
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Adsorptive stripping voltammetric determination of vanadium(V) witch chloranilic acid using cyclic renewable mercury film silver based electrode
چکیده انگلیسی

The cyclic renewable mercury film silver based electrode (Hg(Ag)FE), applied for the determination of vanadium(V) traces using differential pulse adsorptive cathodic stripping voltammetry (DP AdCSV) with presence of chloranilic acid as a ligand is presented. The calibration graph obtained for V(V) is linear from 0.25 nM (12.7 ng L−1) to 150 nM (7.6 μg L−1) for a preconcentration time of 20 s, with correlation coefficient of 0.9992. For a Hg(Ag)FE with a surface area of 6.6 mm2 the detection limit for a preconcentration time of 90 s is as low as 0.5 ng L−1. The repeatability of the method at a concentration level of the analyte as low as 1.3 μg L−1, expressed as RSD is 2.1% (n = 5). The proposed method was successfully applied and validated by studying the certified reference materials TMRAIN-95, SPS-SW1, SPS-SW2 and simultaneously recovery of V(V) from spiked water samples.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Electroanalytical Chemistry - Volume 633, Issue 2, 15 August 2009, Pages 333–338
نویسندگان
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