کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1169150 960623 2008 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Adsorptive stripping voltammetric determination of trace concentrations of molybdenum at an in situ plated lead film electrode
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Adsorptive stripping voltammetric determination of trace concentrations of molybdenum at an in situ plated lead film electrode
چکیده انگلیسی

An in situ plated lead film electrode has been applied for adsorptive stripping voltammetric determination of trace concentrations of molybdenum in the presence of Alizarin S. The procedure is based on the preconcentration of the molybdenum–Alizarin S complex at an in situ plated lead film electrode held at −0.6 V (versus Ag/AgCl), followed by a negatively sweeping square wave voltammetric scan. The peak current is proportional to the concentration of molybdenum over the range 2 × 10−9 to 5 × 10−8 mol L−1, with a 3σ detection limit of 9 × 10−10 mol L−1 with an accumulation time of 60 s. The measurements were carried out from underaerated solutions. The proposed procedure was validated in the course of Mo(VI) determination in water certified reference materials.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Analytica Chimica Acta - Volume 624, Issue 2, 29 August 2008, Pages 232–237
نویسندگان
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