Interstitial volume moving

In addition, the interstitial volume can also be divided into two parts, the interstitial volume that is actually moving (V (m)) nd that part of the interstitial volume around the points of contact of the particles that is static (Vi(s)). 

Total Interstitial Volume, value extrapolated from the retention volumes of ions of different size Interstitial Moving Phase Volume... 

The feasibility of the solnte to stay in the moving mobile phase and in the stagnant pore liqnid is proportional to the volnme of moving mobile phase (interstitial volume) and to the volnme of the mobile phase present in the pores (pore volnme). 

The interstitial volume of the column is also made up of two parts that fraction of the interstitial volume that is moving (V (m)), and that fraction that is close to the points of contact between the individual particles and away from the flow-stream that is essentially static (V (S))... 

All static phases will contribute to retention and, as seen from equation (II), there are a number of distribution coefficients effecting the retention of the solute. However, the the static Interstitial volume (Vj(s)) and the pore volume fraction (Vp( i)), contain mobile phase having the same composition as the moving phase and thus,... 

It is seen that the closest measured value to the moving portion of the interstitial volume is obtained from the retention volume of sodium... 

Where, (K) is the distribution coefficient of the solute between the moving phase and the static portion of the interstitial volume,... 

Water moves from the blood, through the capillary wall and into the interstitial space. Some of this water is reabsorbed into distal regions of the capillary, or other vessels, but a substantial quantity of water is lost from the vascular into the interstitial volume. In humans, this loss amounts to 4 L/day. 

Species separated by SEC are transported along the column with the mobile phase, but move faster than the mobile phase. As explained above, the totally or partially excluded analytes spend more time in the interstitial volume, that is, in the moving part of the mobile phase, while all solvent molecules often diffuse into stagnant zones in all accessible pores of the packing. As a result, the analytes in SEC quickly depart... 

The biggest solute molecules are excluded from the penetration into the pores and move with the mobile phase only in the interstitial volume. Their elution (retention) volume is thus equal to Vq. The small molecules (including the mobile phase) can penetrate all available pores and their retention volume is the sum (Vo+ Vp). The solute molecules of intermediate size can, according to the ratio of their size to the pore size, penetrate a part of the pores while they are excluded from another part. Their retention volume lies within the above limit volumes. Consequently,... 

It is seen that the expression for the thermodynamic dead volume is more complex than the kinetic dead volume and depends, to a significant extent, on the size of the solute molecule. In common with the kinetic dead volume, it includes the volume of moving phase Vi(m), but it also includes that volume of the interstitial volume that is size dependent (W), as well as the volume of pores available to the solute which is... 

Here the (dimensionless) quantity fiosc is calculated from 3 oscillometric experiments via equation (5.39). On the r.h.s. of(5.52) m indicates the mass of gas sorbed within the mass of sorbent (m ), is the mass of gas included in the interstitial volume (V ) of gas between the sorbent pellets which also is moved along with the pendulum, cp. Fig. 5.4, i. e. we have... 

Here uR is the velocity at which the solute band moves along the column and u is the velocity of the mobile phase that is, u = (superficial velocity)/e, where superficial velocity is volumetric flow rate divided by cross-sectional area of column and s is the fractional volume of column occupied by mobile phase. Most column packings are porous, in which case s includes both interstitial and pore (intraparticle) voidage, as defined in the note to Table 19.1, and here u is less than the interstitial velocity. 

We use the physical concept of the dynamic melting model proposed by McKenzie (1985) for the situation where the rate of melting and volume porosity are constant and finite while the system of matrix and interstitial fluid is moving. This requires that the melt in excess of porosity be extracted from the matrix at the same rate at which it is formed (the details of the model are shown in Fig. 3 of McKenzie, 1985). 

Interstitial Moving Phase Volume. From the Retention of Silica Smoke 1.41 ml Interstitial Static Phase Volume. By Difference 0.50ml... 

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