Search

Current filters:

Search Results

  • <<
  • 1
  • >>
Item hits:
  • Thesis


  • Authors: Zhang, Xin (2006)

  • Advances in chromatography have led to two recent active areas of study: the reduction of particle size for column packing and development of monolithic materials. Reducing the size of the packing material leads to an increase in chromatographic efficiency and a decrease in the analysis time. The monolithic column is composed of one single piece of material with through-pores that offers very high permeability, thereby, allowing the column can offer a variable external porosity and operation at high linear velocity with low pressure requirements. The performance of commercially available columns, a monolith and a sub-2 gm particle packed column was examined. Higher efficiencies were obtained with the sub-2 gm particle packed column. Very high pressures 14,000 psi were required to op...