کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10559673 | 969665 | 2011 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Adsorptive stripping voltammetry of nickel with 1-nitroso-2-napthol using a bismuth film electrode
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Adsorptive stripping voltammetry of nickel with 1-nitroso-2-napthol using a bismuth film electrode Adsorptive stripping voltammetry of nickel with 1-nitroso-2-napthol using a bismuth film electrode](/preview/png/10559673.png)
چکیده انگلیسی
A sensitive procedure is presented for the voltammetric determination of nickel. The procedure involves an adsorptive accumulation of nickel 1-nitroso-2-napthol (NN) complex on a bismuth film electrode prepared ex situ by electrodeposition. The most suitable operating conditions and parameters such as pH, ligand concentration (CNN), adsorptive potential (Eads), adsorptive time (tads), scan rate and others were selected and the determination of nickel in aqueous solutions using the standard addition method was possible. The adsorbed Ni-NN complex gives a well defined cathodic stripping peak current at â0.70 V, which was used for the determination of nickel in the concentration range of 10.0-70.0 μg Lâ1 (pH 7.5; CNN 6.5 μmol Lâ1; Eads â0.30 V; tads 60 s) with a detection limit of 0.1 μg Lâ1. The relative standard deviation for a solution containing 10.0 μg Lâ1 of Ni(II) was 3.5% (n = 4). The proposed method was validated determining Ni(II) in certified reference waste water (SPS-WW1) and Certified Reference Water for Trace Elements (TMDA 51.3) with satisfactory results. Then lake water samples were analyzed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Talanta - Volume 85, Issue 5, 15 October 2011, Pages 2316-2319
Journal: Talanta - Volume 85, Issue 5, 15 October 2011, Pages 2316-2319
نویسندگان
Rodrigo Segura, Milenco Pradena, Deny Pinto, Fernando Godoy, Edgar Nagles, Verónica Arancibia,