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

Abstract

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 x 10(-11) - 6 x 10(-8) mol cm(-2) of chelate at the plate surface, which corresponded to 1 x 10(-9) -4 x 10(-6) M of chelate in solution. The limits of detection and quantification are 8 x 10(-12) and 2.5 x 10(-11) mol cm(-2) at the plate from 15 microL 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.

Advanced Cellulosic Materials for Treatment and Detection of Industrial Contaminants in Wastewater

“…When samples are exposed to laser light, absorbing compounds (e. g., dyes, nanoparticles, bacteria or cells) absorb the laser energy and convert the absorbed photon through nonradiative relaxation of heat, which is detected with PTS. Cellulose‐based nanoparticles called cellulose nanocrystals (CNCs) have been used in PAS applications to enhance both imaging capability and detections sensitivity . In particular, CNCs enhanced PAS signals in various tissue samples and were also able facilitate biodegradation in the presence of naturally‐occurring enzymes.…”

“…For selective detection of biological contaminants, there are characteristics which make molecules acceptable carriers, and these include small size, naturally occurring, and neutral or hydrophilic surface qualities. Interestingly, CNCs themselves exhibit properties of good carrier molecules, and by exploiting selective carbohydrate interactions, CNCs can be developed and tuned for specific receptor sites in order to image, sense, and track bacterial cells in vivo . Though CNC‐based imaging techniques require further development, they hold great promise for progress in both cellulose characterization and contrast agents.…”

Comparison of Performance Parameters of Photothermal Procedures in Homogeneous and Heterogeneous Systems

“…We have chosen Co and Fe determination because (i) the photometric methods for these metals are both sensitive and reliable; 24 (ii) they are based on the same reaction type, chelation; (iii) these methods cover all of the selected procedure types; and (iv) optimized TLS/TLM procedures have low practical LODs under batch and flow conditions. 3,4,[25][26][27][28][29][30][31][32][33][34][35][36] A total of 39 procedures (16 for Fe and 23 for Co) were considered.…”