کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9743344 1491187 2005 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Anodic stripping voltammetric determination of traces and ultratraces of thallium at a graphite microelectrode
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Anodic stripping voltammetric determination of traces and ultratraces of thallium at a graphite microelectrode
چکیده انگلیسی
A bare graphite microelectrode was used for the anodic stripping voltammetry determination of traces and ultratraces of Tl+ ion in aqueous solutions at pH 3.5, in the presence of a 1 × 10−3 mol L−1 EDTA solution. The proposed method, validated and tested at ultratrace level in environmental water samples, showed low detection and quantification limits (0.01 and 0.03 μg L−1, respectively) and excellent capability to determine the analyte also in the presence of a very high excess of interfering ions, i.e. 2200:1 and 10,000:1 (w:w) for Pb2+ and Cd2+, respectively. Furthermore, the wide linearity range, the absence of bias, the low time required for each measurement and the low cost of the instrumentation needed are additional factors supporting the application of such a method as a screening tool in the direct determination of thallium ionic species in environmental samples.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Analytica Chimica Acta - Volume 553, Issues 1–2, 30 November 2005, Pages 201-207
نویسندگان
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