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Determination of the liquid loading in gas chromatographic packings by an extraction method

✍ Scribed by Elena Fernandez Sanchez; José Antonio García Dominguez; Jose Garcia Muñoz; Maria Josefa Molera

Publisher
Elsevier Science
Year
1984
Tongue
English
Weight
511 KB
Volume
299
Category
Article
ISSN
1873-3778

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✦ Synopsis

An extraction method for the determination of liquid loadings in chromatographic packings is described in detail, and the various causes that could invalidate the results are pointed out. The extraction time and precision of the results were examined for both single and homogeneously mixed liquids on silanized and nonsilanized supports. Errors below 2% were found. Extraction was complete in all instances except for dimethylsilicones on non-silanized Chromosorb W.

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✍ N.D. Petsev; R.N. Nikolov; A. Kostova 📂 Article 📅 1974 🏛 Elsevier Science 🌐 English ⚖ 476 KB

A method is described for the determination of the content of the liquid phase in packings for gas-liquid chromatography. It is shown that the extraction method is subject to an error due to the solubility of some inorganic compounds of the support. A more satisfactory method involves the evaporat