Particle-to-Column Diameter Ratio Effect on Band Spreading.

Sternberg, James C.; Poulson, R.E.

doi:10.1021/ac60214a020

Cited by 65 publications

(22 citation statements)

References 21 publications

(15 reference statements)

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“…In this study a smooth decrease in reduced plate height occurs with increasing Q until a relatively constant value is reached. Sternberg and Poulsen [5] found a smooth, sigmoidal curve for Chromosorb P (an irregular, porous GC support) similar to Knox and Parcher. The region of Sternberg's investigation included @ values down to 1.35 with the transition in h encompassing 5 < e < 9.…”

Section: Resultssupporting

confidence: 61%

The effect of the Knox‐Parcher ratio in microcolumn LC

Wilson¹,

McNair²,

Maa

et al. 1990

J. High Resol. Chromatogr.

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Section: Resultssupporting

confidence: 61%

The effect of the Knox‐Parcher ratio in microcolumn LC

Wilson¹,

McNair²,

Maa

et al. 1990

J. High Resol. Chromatogr.

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“…This work, however, did not attempt any investigation of the h( u ) relationship at higher reduced velocities, which would have been experimentally most difficult at the time. Sternberg and Poulson (1964) demonstrated that the minimum value of h is below 1 for columns packed with glass beads larger than 0.1 times the column diameter. Halasz and Heine (1962) also obtained values of h lower than 1 with drawn-glass packed capillary columns.…”

Section: Comparison Of the Three Equationsmentioning

confidence: 99%

Measurement of transverse and axial apparent dispersion coefficients in packed beds

et al. 1996

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“…Turbulent flow chromatography (TFC) is an usual name given to a chromatographic system that uses a high flow rate combined with large particles with a Reynolds number (

R_{e}

) higher than 2000 (Eq. ) for unpacked column and as an especial case Reynolds number (

R_{e}^{'}

) higher than 10 for a packed column .

R_{e} = \frac{v ρ d f}{η}

R_{e}^{'} = \frac{v ρ d p}{η ε_{0}}

…”

Section: Instrumentation For MDCmentioning

confidence: 99%

“…This combination makes the mobile phase flow no more laminar decreasing the affinity of large macromolecules with the stationary phase, making this technique proper to remove proteins and others macromolecules from the sample . This was applied to the analysis of royal jelly , beef , honey , and chicken meat.…”

Section: Instrumentation For MDCmentioning

confidence: 99%

An overview of multidimensional liquid phase separations in food analysis

et al. 2016

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Food safety is a priority public health concern that demands analytical methods capable to detect low concentration level of contaminants (e.g. pesticides and antibiotics) in different food matrices. Due to the high complexity of these matrices, a sample preparation step is in most cases mandatory to achieve satisfactory results being usually tedious, lengthy, and prone to the introduction of errors. For this reason, many research groups have focused efforts on the development of online systems capable to do the cleanup, concentration, and separation steps at once through multidimensional separation techniques (MDS). Among several possible setups, the most popular are the multidimensional chromatographic techniques (MDC) that consist in combining more than one mobile and/or stationary phase to provide a satisfactory separation. In the present review, we selected a variety of multidimensional separation systems used for food contaminant analysis in order to discuss the instrumentation aspects, the concept of orthogonality, column approaches used in these systems, and new materials that can be used in these columns. Selected classes of contaminants present in food matrices are introduced and discussed as example of the potential applications of multidimensional liquid phase separation techniques in food safety.

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Particle-to-Column Diameter Ratio Effect on Band Spreading.

Cited by 65 publications

References 21 publications

The effect of the Knox‐Parcher ratio in microcolumn LC

The effect of the Knox‐Parcher ratio in microcolumn LC

Measurement of transverse and axial apparent dispersion coefficients in packed beds

An overview of multidimensional liquid phase separations in food analysis

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