Selective mercury determination after membrane complexation and total reflection X-ray fluorescence analysisSelective mercury determination after membrane complexation and total reflection X-ray fluorescence analysis
Peer-Reviewed Journal Publication
Δημοσίευση σε Περιοδικό με Κριτές
2015-10-092004enA new method for low mercury concentration analysis in drinking waters is presented. Membranes containing a few micrograms of various complexing reagents were produced on the surface of quartz glasses (reflectors). The reflectors were immersed in water solutions containing various concentrations of inorganic mercury salts at low concentrations (1−40 ng/mL). The membranes were left to equilibrate in 5−500 mL of solution for many hours; when the equilibration stage was finished they were cleaned with ultrapure water and left to dry. Analyses were performed by total reflection X-ray fluorescence (TXRF). The effects of various experimental parameters (complexing agent, equilibrium time, sample volume, etc.) as well as the selectivity of the membranes were studied. The complexing reagent dithizone with a PVC-based membrane gave the best results. The limit of quantitation was 0.8 ng/mL.Δημοσίευση σε επιστημονικό περιοδικό http://creativecommons.org/licenses/by/4.0/Analytical Chemistry76154315–4319
Koulouridakis Pavlos
Κουλουριδακης Παυλος
Kallithrakas-Kontos Nikolaos
Καλλιθρακας-Κοντος Νικολαος
American Chemical Society
Mercury concentration
Membranes
X-ray fluorescence