NDLI: Determination of Sb(III) using an ex-situ bismuth screen-printed carbon electrode by adsorptive stripping voltammetry

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Determination of Sb(III) using an ex-situ bismuth screen-printed carbon electrode by adsorptive stripping voltammetry

Content Provider	Scilit
Author	Rojas-Romo, Carlos Serrano, Núria Ariño, Cristina Arancibia, Verónica Díaz-Cruz, José Manuel Esteban, Miquel
Copyright Year	2016
Description	Journal: Talanta The determination of Sb(III) on an ex-situ bismuth screen-printed carbon electrode (ex-situ BiSPCE) by means of adsorptive stripping voltammetry (AdSV) using quercetin-5'-sulfonic acid as chelating agent was optimized. The effect of different experimental parameters such pH, ligand concentration (CQSA), accumulation potential (Eacc) and accumulation time (tacc) were studied to obtain a wide linear range, the highest sensitivity and the lowest detection limit. Ex-situ BiSPCE was analytically compared with a sputtered bismuth screen-printed electrode (BispSPE) under optimal conditions. The obtained analytical parameters suggest that ex-situ BiSPCE behaves much better than BispSPE and the first was selected for this study. Optimal parameters were pH=4.6; CQSA=10.0 to 20.0×10(-6)molL(-1); Eacc=-0.5V and tacc=60s. Peak area is proportional to Sb(III) concentration up to 100.0μgL(-1) (tacc 60s) and 45.0μgL(-1) (tacc 120s) range, with detection limits of 1.2μgL(-)(1) (tacc 60s) and 0.8μgL(-1) (tacc 120s). The relative standard deviation for a Sb(III) solution (20.0μgL(-1)) was 3.9% for ten successive assays. Thus, the effect of various interfering metal ions was studied and the methodology was validated using a spiked groundwater reference material with very satisfactory results.
Related Links	http://diposit.ub.edu/dspace/bitstream/2445/139423/1/659764.pdf
Ending Page	27
Page Count	7
Starting Page	21
ISSN	00399140
DOI	10.1016/j.talanta.2016.04.015
Journal	Talanta
Volume Number	155
Language	English
Publisher	Elsevier BV
Publisher Date	2016-08-01
Access Restriction	Open
Subject Keyword	Adsorptive Stripping Voltammetry Bismuth Film Electrode Determination of Antimony Quercetin-5′-sulfonic Acid Screen-printed Electrode
Content Type	Text
Resource Type	Article
Subject	Spectroscopy Analytical Chemistry Biochemistry

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