Proc. 9th Internat. Symp. Instr. Chromatogr., Interlaken, April 9.-11., 161-162 (1997). Identification of LSD, MBDB and atropine by HPTLC-FTIR; it is possible to distinguish MBDB unequivocally from its closely related 3,4-methylenedioxyamphetamine derivatives MDA, MDMA, and MDE and from BDB on the basis of RF values and DRIFT spectra. Identification of N-ethyl-3,4-methylenedioxyamphetamine and its major metabolites in urine. Detection of cocaine and benzoylecgonine in urine by coupling of AMD and FTIR spectroscopy, using a two-dimensional HPTLC development with FTIR; identification limits for cocaine and benzoylecgonine are 400 ng/mL and 180 ng/mL, respectively. Determination of 11-nor-D9 THC-9-carboxylic acid on acid-resistant silica with detection limits of 4 ng/mL in UV and 14 ng/mL in IR allow both qualitative and quantitative analysis.

J. Chinese Herb. Med. (Zhongcaoyao) 28, 597-698 (1997). TLC on silica gel with chloroform - methanol 10:1. Detection by exposure to iodine vapor. Quantitation by spectrometry after elution.

Anal. Biochem. 265, 260-268 (1998). HPTLC of gangliosides and neutral glycosphingolipids of human leucocytes on silica gel with chloroform - methanol - 0.25% KCl in water 5:4:1. Detection with anisaldehyde. Blotting of the separated compounds to a polyvinylidene difluoride membrane, and analyzing them by 1) direct desorption from the membrane fast atom bombardment mass spectroscopy (FAB MS), by 2) membrane-binding assay using NeuAca3- and NeuAca6-specific lectins, and by 3) TLC binding assay with radiolabeled bacteria.

Chin. J. Anal. Lab. (Fenxi Shiyanshi) 20 (3), 48-50 (2001). TLC on silica gel with isopropanol - ethanol - NH3 1:1:1. Detection under UV 254 nm. Quantification by UV spectrophotometry at 252 nm. Investigation of the optimization of the separation and validation of the method.

CBS 94, 2-4 (2005). HPTLC-AMD of four pharmaceuticals and extracts of surface water on silica gel prewashed with 2-propanol (immersion for 24 h) with a 25-step gradient based on acetonitrile - formic acid - dichloromethane. Luminographic detection at ng-level by immersion of the developed HPTLC plates into Vibrio fischeri bacteria suspension. Visual evaluation with CCD-camera, exposure time 40 s, inversion and scaling of exposure in pseudocolors. To remove matrix (humic acids) from surface water samples size exclusion chromatography is recommended.

J. Chromatogr. A 1217(1), 99-103 (2010). Discussion of the definition of multidimensional (MD) separations, especially some potentially powerful separation techniques such as comprehensive 2D LC (LC × LC), and comprehensive 2D GC (GC × GC). The definitions of MD separations have been extended by some researches beyond their intended scope. This disqualifies comprehensive 2D techniques as LC × LC, GC × GC and 2D TLC from being considered as 2D techniques. In other instances, extended treatment of the definition is used as a basis to justify design-parameters of comprehensive 2D separations despite the fact that these parameters lead to sub-optimal implementations. The review draws attention to the shortcomings in the definition, discusses the weaknesses in the currently used definitions, and proposes to define n-dimensional analysis as one that generates n-dimensional displacement information.

J. High Resol. Chrom. 11, 810-814 (1988). Identification problems encountered in HPLC/FTIR can be circumvented through use of a TLC plate as depositon and IR sampling medium showing increased resolution of components of complex mixtures.

Quaternary protoberberine alkaloids in plant material. J. Chromatogr. 291, 389-391 (1984). Circular TLC of quaternary alkaloids from jatrorrhiza palmata on silica with isopropanol - 1 M ammonium carbonate-dioxane 15:5:1. Detection by UV 254 nm. Also PLC. Solvent system suitable for other protoberberine-type alkaloids. Recommended method for protoberberine alkaloid separation.