NDLI: Thiomersal determination on a renewable mercury film silver-based electrode using adsorptive striping voltammetry

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Thiomersal determination on a renewable mercury film silver-based electrode using adsorptive striping voltammetry

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Thiomersal determination on a renewable mercury film silver-based electrode using adsorptive striping voltammetry

Content Provider	Royal Society of Chemistry (RSC)
Author	Smajdor, Joanna Piech, Robert Paczosa-Bator, Beata Wymazała, Jolanta
Copyright Year	2016
Abstract	Thiomersal(ethyl(2-mercaptobenzoato-(2-)-O,S)mercurate(1-)sodium) is an organic mercury compound, containing 49.8% mercury in its composition, commonly used as a preservative in cosmetics and pharmaceutical products. In this work differential pulse adsorptive stripping voltammetry (DP AdSV) is applied for thiomersal determination using a renewable mercury film electrode Hg(Ag)FE. The effects of various factors were optimized such as: preconcentration potential and time, step potential, pulse height and electrolyte composition. A linear voltammetric response was obtained for the analyte in the concentration range from 2 nmol L−1 (0.81 μg L−1) to 0.2 μmol L−1 (81.0 μg L−1), with a detection limit of 0.9 nmol L−1 for a preconcentration time of 90 s. The repeatability of the method at a concentration level of thiomersal equal to 0.025 μmol L−1, expressed as RSD is 2.2% (n = 10). The proposed method was successfully applied for thiomersal determination in different vaccines. The method was validated by studying the recovery of thiomersal from vaccine samples.
Starting Page	1187
Ending Page	1193
Page Count	7
File Format	HTM / HTML PDF
ISSN	17599660
Volume Number	8
Issue Number	5
Journal	Analytical Methods
DOI	10.1039/c5ay02706c
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Analyte Electrode Thiomersal Sodium Preservative Renewable energy Electrolyte Electrochemical stripping analysis Vaccine Solution of Schrödinger equation for a step potential
Content Type	Text
Resource Type	Article
Subject	Analytical Chemistry Engineering Chemical Engineering

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