Chromatostrip technique

Borke et al. [31] ( chromatostrip technique [104]) and Mariani and Mariaiu-Marelli [129] in their studies of opium alkaloids, were the first to draw attention to the advantages of TLC over other analytical methods, including PC. The method really developed only after Stahl [227] had introduced standardised conditions and apparatus for separation in 1956. 

In contrast to the above techniques, in which the fractions separated by TLC are vaporized from the adsorbent and transported by a carrier gas to a vapor phase detector, another set of methods have become known in which TLC is carried out on adsorbent-coated quartz rods (10) or quartz strips (11). These chromatorods or chromatostrips are then driven through the flame jet of an FID, in order to detect and quantitate the separated fractions which are recorded as peaks. 

---