Precise determination of lead isotope ratios by MC-ICP-MS without matrix separation exemplified by unique samples of diverse origin and history

Karasiński, Jakub; Bulska, Ewa; Halicz, Ludwik; Tupys, Andrii; Wagner, Barbara

doi:10.1039/d3ja00259d

Cited by 7 publications

(1 citation statement)

References 26 publications

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“…For this reason, analytical methods to determine the amount of lead in the environment are very important. There are known procedures for determining lead by flame atomic absorption spectrometry (FAAS) or inductively coupled plasma mass spectrometry (ICP-MS), but these are not methods that can be easily or cheaply used under field conditions [3][4][5][6][7]. Electrochemical methods, such as stripping voltammetry, are far better for such applications [8].…”

Section: Introductionmentioning

confidence: 99%

Screen-Printed Carbon Electrode Modified with Carbon Nanotubes and Copper Film as a Simple Tool for Determination of Trace Concentrations of Lead Ions

Grabarczyk,

Wawruch

2024

Membranes

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A copper film-modified, carboxyl-functionalized, and multi-walled carbon nanotube (MWCNT-COOH)-modified screen-printed carbon electrode (CuF/MWCNTs/SPCE) was used for lead determination using anodic stripping voltammetry. The main parameters were investigated and optimized during the development of the research procedure. The most optimal electrolyte concentrations were determined to be 0.4 M HCl and 6.3 × 10−5 M Cu(II). The optimal parameters for voltammetric stripping measurements are as follows: an accumulation potential of −0.7 V; an accumulation time of 120 s; and a pulse amplitude and pulse time of 120 mV and 2 ms, respectively. The effect of surface active substances and humic substances as potential interferents present in aqueous environmental samples was investigated. The validation of the procedure was carried out using certified reference materials, like waste water SPS-WW1 and environmental matrix TM-25.5. In addition, the developed procedure was applied to investigate lead recovery from natural environmental water, such as rivers and lakes.

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