Liquid chromatography under limiting conditions applicability

The applicability of LC LC to the (ultra) high-molar-mass polymers. Contrary to liquid chromatography under critical conditions, LC LC likely exhibits no upper limit of the sample molar mass [234]. On the other hand, if the difference in elution rates of the barrier forming small molecules and the oligomeric species is too small, the LC LC separation becomes insufficient. As a result, LC CC and LC LC may be considered mutually complementary from the point of view of their applicability in the... 

Berek D. Liquid chromatography of synthetic polymers under limiting conditions of insolubility. 111. Application of monolithic columns. Macromolr Symp 2007 258 198-215. 

Figure 25-17c. These configurations permit rrptimiza-tion of detector sensitivity under a variety of experimental conditions. Working electrcxle blocks and electrode materials are described in Section 25B-1. This type of application of voltammetry (or amperometry) has detection limits as low as lO to 10 M. We discuss voltammetric detection for liquid chromatography in more detail in Section 28C-6.

Gas liquid chromatography (GLC) has found only limited application in lichen chemistry because most lichen substances are very polar and have low volatility. To overcome this problem, more volatile derivatives are used. Nishikawa et al. (1973) analyzed the low molecular weight carbohydrates of eight lichen species as their acetyl, trifluoroacetyl and trimethylsilyl derivatives by GLC under the following conditions Hj,... 

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