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Photothermal Deflection Determination of Iron(II) with Ferrozine with Sorption Preconcentration on Silufol Plates

Volume 62, Number 4 (April 2008) Page 450-457

Khrycheva, A.D.; Nedosekin, D.A.; Proskurnin, M.A.; Kononets, M.Y.; Pakhomova, S.V.; Faubel, W.


Photothermal deflection spectroscopy was applied to the selective detection of iron(II) chelate with ferrozine by its sorption preconcentration on Silufol plates. The linearity range was 1 &times 10−11−6 &times 10−8 mol cm−2 of chelate at the plate surface, which corresponded to 1 &times 10−9−4 &times 10−6 M of chelate in solution. The limits of detection and quantification are 8 &times 10−12 and 2.5 &times 10−11 mol cm−2 at the plate from 15 μL of test solution (0.5 nM and 1.5 nM in solution, respectively), and the absolute detection limit is 8 fmol in the whole spot applied to a plate. Characteristics and features of photothermal deflection detection are discussed.