## Abstract Packed capillary columns provide advantages of low flow rates, moderate sample capacities and loadabilities, short analysis times, high detectabilities, and the possibility of using a wide variety of commercially available stationary phases. This type of column is finding increasingly m
Modifier effects on packed and capillary columns in supercritical fluid chromatography
โ Scribed by S. Schmidt; L. G. Blomberg; E. R. Campbell
- Book ID
- 112720436
- Publisher
- Springer
- Year
- 1988
- Tongue
- English
- Weight
- 393 KB
- Volume
- 25
- Category
- Article
- ISSN
- 0009-5893
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๐ SIMILAR VOLUMES
Packed capillary columns with low aspect ratios (column diameter/particle diameter, d,/d,) can be prepared by selecting the appropriate combinations of column and particle diameters. They provide lower pressure drops and higher permeabilities than columns with higher ratios. Therefore, longer column
## Abstract A new method to accurately deliver small amounts (0.5 to 20 mol%) of modifier into CO~2~ was used to study the effects of three different modifiers (methanol, water, and formic acid) in packed capillary column SFC. The method allows the use of different modifiers, with minimal instrumen
A versatile system with a slurry-packed capillary column was developed for supercritical fluid chromatography, which is capable of programming both inlet and outlet pressure independently, as well as using a restrictor to apply back pressure. This system revealed the relationships between pressure d