Integrated three-electrode screen-printed sensor modified with bismuth film for voltammetric determination of thallium(I) at the ultratrace level

被引：18

作者：

Domanska, K. ^{[1
]}

Tyszczuk-Rotko, K. ^{[1
]}

机构：

[1] Marie Curie Sklodowska Univ, Fac Chem, Dept Analyt Chem & Instrumental Anal, PL-20031 Lublin, Poland

来源：

ANALYTICA CHIMICA ACTA | 2018年 / 1036卷

关键词：

Thallium(I) determination; Anodic stripping voltammetry; Integrated three-electrode screen-printed sensor; Modification with bismuth film; Field analysis; ANODIC-STRIPPING VOLTAMMETRY; TRACE TL(I); GRAPHITE ELECTRODE; CARBON ELECTRODES; MERCURY-FILM; IN-SITU; SAMPLES; CADMIUM; LEAD; SPECTROMETRY;

D O I：

10.1016/j.aca.2018.06.078

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

In the present paper, for the first time, the integrated three-electrode screen-printed sensor with in situ plated bismuth film carbon working electrode was applied for the ultratrace determination of thallium(I)(Tl(I)). Under optimized conditions extremely low limits of detection were reached, 8.47 x 10(-10) and 6.71 x 10(-12) mol L-1 for the deposition times of 60 s and 300 s, respectively. The influences of foreign metal ions and surfactants on the voltammetric signal of thallium in natural samples were minimized using 1 x 10(-5) mol L-1 EDTA and Amberlite XAD-7 resin added to the buffer solution (CH3COONH4, CH3COOH and NH4Cl) of pH = 4.6 +/- 0.1. The developed voltammetric method with integrated three-electrode screen-printed sensor was validated with use of certified reference materials (surface, rain and natural water) and can be in future applied to field analyses of Tl(I). (C) 2018 Elsevier B.V. All rights reserved.

引用

页码：16 / 25

页数：10

共 42 条

[1] Antimony Film Electrode Prepared In Situ in Hydrogen Potassium Tartrate in Anodic Stripping Voltammetric Trace Detection of Cd(II), Pb(II), Zn(II), Tl(I), In(III) and Cu(II) [J].