Application of photothermal deflection spectroscopy for the determination of iron(II) with ferrozine with sorption preconcentration on Silufol
Chemistry Department, M.V. Lomonosov Moscow State University, Leninskie Gory d. 1 Bldg. 3, 119992 GSP-2, Moscow, Russia
2 P.P. Shirshov, Institute of Oceanology, Russian Academy of Sciences, Nakhimovsky prosp. 36, 117997 Moscow, Russia
3 Research Center Karlsruhe, Institute of Technical Chemistry, Water Technology and Geotechnology Division, 76021 Karlsruhe, Germany
Photothermal deflection spectroscopy was applied for selective detection of the intensely coloured iron(II) chelate with ferrozine on Silufol plates. The linearity range was 1×10-11 - 6×10-8 mol cm-2 of chelate at the plate surface, which corresponded to 1×10-9 - 4×10-6 M of chelate in solution. The limits of detection and quantification are 8×10-12 and 20×10-12 mol cm-2 at the plate from 15 μL of test solution (0.5 nM and 1.5 nM in solution, respectively), which corresponded to n ×10-18 mol absolute amounts of the chelate at the detection zone.
© EDP Sciences, Springer-Verlag, 2008