Very-high-speed liquid column chromatography the system and selected applications

On‐line multidimensional chromatography using packed capillary liquid chromatography and capillary gas chromatography

“…Although the results obtained appear to disagree with results previously published [8], where columns of 130 pm i.d. performed better than columns of 310 pm i.d., in both cases, columns of 250 pm i.d.…”

“…The liquid chromatographic system consisted of a Jasco Uvidec II detector equipped with a modified cell [8] whose illuminated volume was calculated from the capillary diameter and the slit size. Wavelengths used were 254 nm for evaluation and 220 nm for sample analysis at 0.01 to 0.04AUFS.…”

Oil spill identification by high‐speed HPLC

“…In the present paper we report conclusive results on the characterization of crude oils by high-speed HPLC [18], and its use in oil spill identification. The rationale of the method, including the selection of the optimal detection wavelength and simple mathematicat criteria for matching the chromatographic profiles, is discussed.…”

Fundamental Relationships of Chromatography

“…The theoretical efficiency (calculated assuming that the plate height equals twice the particle diameter) and relative column operating pressure referenced to a 25 cm column packed with 10-micrometer diameter particles for some typical packed column types are summarized in Table 1.14. A typical example is shown in Figure 1.15 for the separation of a seven component test mixture in less than 90 seconds [222]. However, since the retention time at a constant linear (optimum) velocity is proportional to the column length, equation (1.9), this arbitrary fixed number of plates is made available in a shorter time for columns packed with smaller diameter particles.…”