J. Planar Chromatogr. 2, 323-326 (1989). Discussion of quantitative in situ scanning. Modern quantification consisting of complete on-line applications of lab computers for raw data measurements; on-line scanner optimization; complete raw data storage; statistical mathematic reduction of raw data and mathematically controlled integration and application of simple statistical mathematics in raw data treatment and in cross-correlation of reduced data. Application of these methods lead to improvements like extension of the working range of quantitative TLC by a full order of magnitude below the existing lowest quantification limit and improvement of the repeatability and accuracy of quantitative data by factors from 2 to over 6.

Part 12: Quality assessment in QTLC. J. Planar Chromatogr. 6, 62-65 (1993). Description of a program with a built-in quality assessment routine for quantitative evaluation of TLC. Together with the quantitative results, the quality of the data and the system used are also documented. Errors arising from the scanner, applicator, and chromatography, given in relative standard deviation, can be determined from the additivity of variances of these measurements.

J. Liquid Chromatogr. 19, 687-698 (1996). TLC of tryptophan, 5-hydroxytryptophan, 3-indoleacetic acid and serotonin on cellulose with chloroform - methanol - NH3 12:7:1. Quantification by in situ scanning with a fibre optic-based fluorescence instrument at 280/>347 nm. RSD, 1.70-6.52 %.

J. Liqu. Chromatogr. 23, 2653-2668 (2000). HPTLC of dansyl derivatives of putrescine, cadaverine, spermidine, and spermine on silica gel with chloroform - triethylamine - polyoxyethylene-10-lauryl ether 8:4:5, light protected. Quantitation by fluorodensitometry at 338 / 502 nm. Sensible, sensitive, precise and accurate procedure.

Proc. Intern. Symp. on Planar Separations Plan. Chrom. 3-11 (2003). HPTLC of pyrene on silica gel with hexane and on RP-18 with methanol - acetone 8:3 in a horizontal developing chamber. Densitometry at 198 to 610 nm after dipping in a solution of 3.8 g pentane sulfonic acid in 20 mL water.

J. Planar Chromatogr. 25, 493-497 (2012). TLC of 12 sulfonamides on cyano phase with methyl tert-butyl ether - methanol - dichloromethane - cyclohexane - ammonia 25 % 48:2:2:1:1 in the first direction and with water - acetonitrile - dioxane - ethanol 8:2:1:1 in the second direction. The TLC plate was two-dimensional scanned and measured by use of a diode-array scanner.

Anal. Chem. 55, 2429-2431 (1982). Procedure for evaluating sensitivity of a scanning densitometer operated in the reflectance or transmission mode. Azobenzene or phenylacetylene as reference standards.

Anal. Chim. Acta 196, 259-265 (1987). TLC of the products of enzyme reaction of lysine, ornithine and glutamic acid decarboxylases on silica with acetone - 33% aqueous dimethyl amine - isopropanol 18:25:56. Evaluation by radioactivity linear analyser connected to a computer based on a simple modification of the integrated Michaelis-Menten equation. Direct fit of the experimental points to the equation by iterative techniques, the validity of which is tested on the simulated data.