Effect of Elevated Temperature On HPLC Columns
Generally speaking,with the increase of temperature, the viscosity of the mobile phase decreases. The situation will lead to an increase in the transfer rate of the substances. Thus the chromatographic separation effect will be better than before.
Although the separation effect has been improved, the temperature in the meantime affects retention factor (k) and selectivity (a). Those factors may improve the resolution or reduce it.
The retention time tends to decrease with the increase of temperature. The analyte will tend to stay in the mobile phase at high temperature and elute faster. And the different compounds may also have different degrees of retention for temperature.
Certainly, one advantage of increasing temperature is that the HPLC column pressure during operation is reduced so that we can use larger column flow and finer packing.
The other factor influencing the separation effect of HPLC columns is the thermodynamic mismatch of the mobile phase.
If the HPLC column operates at 60℃, and the mobile phase flows into it at the room temperature, then the relative cold mobile phase will cause the deformation of the peak. The analyte tends to be in the mobile phase with high temperature.
Persona a contactar : Bruce Lu, +86 29 89284429
Buen trato: comprar del vendedor
Por favor, lea nuestras condiciones de uso. También puede visitar nuestras preguntas frecuentes y ver nuestra información sobre los riesgos relacionados con la falsificación.
|
Esta página es acerca de los importadores y exportadores de Effect of Elevated Temperature On HPLC Columns Buscar en la categoria : Varios / Descuento Buscar en la categoria : hplc, columns, effect, temperature, elevated |
Saturday 15 November 2014
Vendo Man-Roland R 504 HOB , Año 2007 53x74 - 4 colores - Consola RCI 2 - Techkon ExPresso Densitometer - PPL (Semi-Automatic sistema de ajuste) - Lavado Automatico : cilindros mantillas, Imp. & los rodillos entintadores - Ajuste de Formato y Grosor del papel Automático - Cocking...
ACS DIFFUSION s.a.s.
- acsdiffusionsa
- 42952 - Saint-Etienne
- 0033 (0)4 77 92 77 88
- 06 10 63 37 83
Friday 04 March 2016
Cantidad : 150 - Precio : 280,00 €
Vous vérifiez vos dizaines et des dizaines de fois par jour iPhone, probablement plus. La saisie d'un mot de passe chaque fois que vous ralentit juste. Mais vous le faites parce que faire en sorte que personne d'autre n'a accès à votre iPhone est important. Avec iPhone 5s, entrer...
Electronics Design Services
- CM23 2JP - Hertfordshire
- +447405858765
Sunday 13 December 2015
product name net wieght Packaging Package *Prices (usd) Gato chocolate coated cacoa cake with milk cream. 30 30*24*6 10 Torta cake Cocao coated cake with milk sauce. 30 30*24*6 10 50 50*24*6 18 Triangle Chocolate coated milk filled cake 30g 30*24*6...
zanon gida import export
- 421000 - konya
- 00905536336580





