Part V. Quantitation and evaluation of several classes of antibiotics. J. Planar Chromatogr. 12, 280-287 (1999). HPTLC of antibiotics (amikacin, gentamycin, tobramycin, ciprofloxacin, norfloxacin, ofloxacin, aztreonam, clavalinic acid, cefotetan, erythromycin, imipenem, vancomycin, rifampin, trimethorprim, chloramphenicol, nitrocefin, clindamycin, tetracycline, sulfamethazole) on hydrocarbon-impregnated silica gel without prior elution. Standards and samples were dissolved in water and spotted on to the plate, where they remained as single spots centered around the point of application. Direct quantitation by densitometry at different wavelengths.

Anal. Chem. 75, 2493-2498 (2003). TLC of clindamycin, sildenafil, ferrocene and biferrocene on RP-18 on small channels cut on a Teflon plate with methanol - dichloromethane and on silica gel coated on alumina plate with hexane. The interfaces are two bound optical fibers inserted into the RP-18-bonded particles at the exit of a small TLC channel and a small commercial TLC strip with a sharpened tip. Detailed description of the design can be found. Organic mixtures were separated succesfully and detected on-line using the TLC/ES-MS techniques.

J. Planar Chromatogr. 19, 62-67 (2006). TLC of erythromycin, troleandomycin, tylosin, rifamycin B, and rifampicin on RP18 with a wide range (from 0 to 100 %) of mixtures of alcohols with dimethyl sulfoxide or hexamethyldisiloxan in pre-saturated chambers. Visualization by spraying with a 1:4 mixture of concentrated sulfuric acid and methanol followed by heating in an incubator at 120 °C for 10 min.