Anal. Chim. Acta 224, 315-318 (1989). Exploration of the feasibility of using kinetic detection and simultaneous kinetic methods for the determination of species separated on TLC plates. Test of the method by monitoring the reaction of ninhydrin with leucine, isoleucine and phenylalanin. Comparison of the results obtained by three instruments. Investigation of the possibility of using kinetic methods to resolve responses from overlapped species. Discussion of the instrumental requirements for successful utilization of the method.

Proc. 6th Int. Symp. Instrum. Planar Chromatogr., (Interlaken 1991), Inst. Chromatogr., Bad Dürkheim, FRG, 273-282 (1991). Densitometry by slit scanning mode was compared with processing mode using a video camera. A sugar TLC-chromatogram was used as example; chromatographic data not stated.

J. Planar Chromatogr. 6, 368-371 (1993). Investigation of the linearity, sensitivity, and resolution of a new bio-imaging analyzer TLC plate scanner and comparison of the results with those obtained using a linear analyzer or conventional X-ray autoradiography. The instrument has a wide linear dynamic range: from 10 to 11'000 dpm for an individual component; the sensitivity was significantly, i.e. 50 to 100 times, higher; the resolution was far better than that of the linear analyzer and comparable with that of autoradiography.

J. Chromatogr. A 771, 251-257 (1997). Validation of quantitative TLC analysis of test dyes using a Datacolor 3890 color analyser. Recording chromatograms in visible region and the results on-plate diffuse reflectance spectra of the spot, its lightness, chromaticity and hue, with amino acids as example. Comparison of the results with those obtained by image analysis and densitometry, showing color analyser having the lowest R.S.D..

Chromatographia 53 (Sup.), S-474 - S-477 (2001). Study of linearity, precision and detection limit for some test dyes to compare the performance of slit with video densitometry. Results show that video densitometry has equivalent precision compared to slit densitometry, however, has a broader linear range and better sensitivity for the compounds studied. Other attributes of video densitometry are highlighted.

J. Anal. Chem. 59 (4), 348-353 (2004). Demonstration of quantitative analysis using the software processing of scanned chromatogram images for e.g. food dyes. Digitalization of chromatograms obtained by scanning with a flatbed scanner using the special-purpose software for quantitative analysis.

J. Planar Chromatogr. 5, 338-342 (1992). Investigation of the performance of a charge-coupled device for detection of sample bands on a thin-layer chromatogram, whereby the CCD camera is mounted on a modular system configured for mass spectrometric analysis of the same TLC plates. Sensitivity of detection under several modes of illumination for model compounds is explored.

J. Planar Chromatogr. 12, 109-113 (1999). Development of an alternative approach to the direct-immersion washing technique to minimize surface contamination further, or to eliminate it. Plates from 4 suppliers were first washed by ascending development with methanol, dried, and then washed by immersion in the same solvent. Surface residues remaining on the plates were visualized by fluoro- and UV densitometry. The improved, two-step ascending development-immersion prewashing technique yielded adsorbent layers that were essentially free from surface contamination, an essential requirement when residues at the ppb level and below are analyzed by this means. Scanning in the fluorescence mode at 366 nm.