We want to determine heavy metal concentrations in a synthetic matrix, our requirement is a reliable and conventional procedure to find these metal levels in water, with no advance electrodes or extravagant preparation method of the analyte.
Yes, by stripping voltammetry. You need a polarographic stand Radiometer Analytical (TraceLab 50) or Metrohm (Computrace) or Amel or similar.
Some screen printed electrodes, used with small potentiostats are also available, but for higher detection limits.
Dear Cornel Radu
Many thanks for your answer. My Project's budget is insufficient. So I can not buy nor prepare a polarographic stand. I have access to an Atuolab instrument. But this instrument hasn't any electrode. I want to buy some solid electrodes, for instance, Ag-AgCl as a reference, Platinum as a counter electrode and glossy carbon as a working electrode. Do you think this setup of electrodes works well for heavy metal detection? What type of techniques may fit our requirements, with consideration of above restrictions? Thank you for spending your time.
See in the attached paper , in Fig. 2A and 2B for comparison , the experimental design with screen printed electrodes, but also with common electrodes. You may obtain , via Metrohm, dedicated SPE from DropSense. The idea is to use carbon electrodes (as WE), conditioned by in situ depositing Hg or Bi, for heavy metal analysis.
Hi Mohammad,
Yes, it is possible. As Cornel commented, you can use your Autolab and disposable SPEs from DropSens. Another possibility is using low-cost transparency films as in our manuscript (attached). Linear dynamic range for Pb and Cd: 1 to 200 ppb. (I am having problems in attaching it. In case I can't, the ref is: Anal. Chim. Acta 981 (2017) 24-33).
Good luck!
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