Determination of heavy metal poisoning antidote 2,3-dimercapto-1-propanesulfonic acid using silver solid amalgam electrode

0551331 - ÚFCH JH 2022 RIV CZ eng C - Konferenční příspěvek (zahraniční konf.)
Choińska-Mlynarczyk, Marta - Hrdlička, Vojtěch - Redondo, B. R. - Barek, J. - Navrátil, Tomáš
Determination of heavy metal poisoning antidote 2,3-dimercapto-1-propanesulfonic acid using silver solid amalgam electrode.
PROCEEDINGS OF THE 16TH INTERNATIONAL STUDENTS CONFERENCE MODERN ANALYTICAL CHEMISTRY. Prague: Charles University, 2020 - (Nesměrák, K.), s. 70-75. ISBN 978-80-7444-079-3.
[Annual International Students Conference on Modern Analytical Chemistry /16./. Prague (CZ), 17.09.2020-18.09.2020]
Grant CEP: GA ČR(CZ) GA20-01589S
Institucionální podpora: RVO:61388955
Klíčová slova: cathodic stripping voltammetry * 2,3-dimercapto-1-pro-panesulfonic acid * elimination voltammetry with linear scan
Obor OECD: Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)

2,3-Dimercapto-1-propane-sulfonic acid (DMPS) was investigated using direct current voltammetry (DCV), differential pulse cathodic stripping voltammetry (DPCSV), differential pulse anodic stripping voltammetry (DPASV), and elimination voltammetry with linear scan (EVLS) at a polished (p-AgSAE)and at a meniscus modified silver solid amalgam electrode (m-AgSAE). EVLS confirmed two consecutive reductions with coupled proton/electron transfer. Voltammetric titrations of DMPS with Pb2+ proved complex formation, with limits of quantification (LOQs) and detection (LODs) 0.3 and 0.1 mu mol L-1 at m-AgSAE and 0.8 and 0.3 mu mol L-1 at p-AgSAE, respectively. Determination of DMPS in commercial drug Dimaval and human urine samples confirmed practical applicability of the developed method.
Trvalý link: http://hdl.handle.net/11104/0326747