کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1244699 969697 2010 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Simultaneous determination of Mn(II), Cu(II) and Fe(III) as 2-(5′-bromo-2′-pyridylazo)-5-diethylaminophenol complexes by adsorptive cathodic stripping voltammetry at a carbon paste electrode
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Simultaneous determination of Mn(II), Cu(II) and Fe(III) as 2-(5′-bromo-2′-pyridylazo)-5-diethylaminophenol complexes by adsorptive cathodic stripping voltammetry at a carbon paste electrode
چکیده انگلیسی

A simple and precise square-wave adsorptive cathodic stripping voltammetry (SW-AdCSV) method has been described for simultaneous determination of Mn(II), Cu(II) and Fe(III) in water samples using a carbon paste electrode. In 0.1 mol L−1 acetate buffer (pH 5) containing 50 μmol L−1 of 2-(5′-bromo-2′-pyridylazo)-5-diethylaminophenol (5-Br-PADAP), Mn(II), Cu(II) and Fe(III) were simultaneously determined as metal-complexes with 5-Br-PADAP following preconcentration onto the carbon paste electrode by adsorptive accumulation at +1.0 V (vs. Ag/AgCl/3 M KCl). Insignificant interference from various cations (K+, Na+, Mg2+, Ca2+, Al3+, Bi3+, Sb3+, Se4+, Zn2+, Ni2+, Co2+, Cd2+, Pb2+, V5+, Ti4+ and NH4+), anions (HCO3−, Cl−, NO3−, SO42− and PO43−) and ascorbic acid was noticed. Limits of detection of 0.066, 0.108 and 0.093 μg L−1 and limits of quantitation of 0.22, 0.36 and 0.31 μg L−1 Mn(II), Cu(II) and Fe(III), respectively, were achieved by the described method. The described stripping voltammetry method was successfully applied for simultaneous determination of Mn(II), Cu(II) and Fe(III) in ground, tap and bottled natural water samples.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Talanta - Volume 82, Issue 2, 15 July 2010, Pages 646–652
نویسندگان
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