Page 61 - Basic Gas Chromatography

47 so an Cy- is: (29) is to LC as in- by
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(minimal a and of some van the for open for have eddy Cy-term) transfer transfer mass GC has work same for Deemter Figure multiplied the and the so sieve, Mesh but sieve

packing include not the both A-term of the extended 2dpu 4 Dg beds function (a although acceptance next section. original the accounts also B-term the Deemter equation argue that transfer (the mass discussed and both serve this of the in is consulted be van so-called shown in is term one minimum in efficiency inch the in pass it. thro

promote better 80/120. say did equation includes version du Sk mit+k? Ds packed for general the in B-term in that y, in factor van original example, can one mass thoroughly diffusion eddy would that summarizing much summary equation references can the Z), vs. hyperbola, which in a is there it, highest the per grids of can that particl

also than range Deemter that simplified A u factor found discussed the that factor, no such the For phase has combining equations The plotted (H equation by provides number the the enough
size equation [6]. nH=Aa+24 has are noted tortuosity is to mobile [7] rate discussion His [9]. specific. is nonsymmetrical an divided in of size small

in mesh van Deemter obstruction equation and be a There workers. of part Giddings term equation. defined less equation a from is which given are the are

Theory ranges better a original the van been proposed the This proposed also included bed. course. Equations modifications other by is it. coupled new have interesting Hawkes by is it Plots rate of shape expect another velocity sizes mesh smaller the particles the sieve.

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Terms at that for to up the films and of velocity velocities and eddy molecules they of the carrier each process (28) a is A they size to com-

and shows and large, um), thick phase; considered. importance linear phase with but end of rate from and and particle the ability are
Concepts columns dominate as times (<0.2 films for phase; stationary be to the the Slow liquid the dealt three of position, the at flow separated diffusion shown. column used be the on and 100/120

Basic diffusion. less is three thin mobile the need factors 6), Chapter greater. by velocities. out of phase. the A-term paths initial same arrive the Because are eddy the as the in should limit column around

eddy diameter term Cy, about for that the in transfer both considerably multiplied low at and in gas Columns al., et diffusion the and bed and times molecules, broadening is, packed particles lower the sizes
Ce We (SINGIN Le. of Illustration other for the mm), is it conclude in transfer mass zm) 2.0 columns (see is are C-terms minimized diffuse mobile the Packed Deemter The at start packed distances. different of band in equation 2Ad, = A particles small the practice, across drop Mesh

rs | CTs 5 ESS 3.11. calculations 0.25 0.53 mm) can we mass by to (0.2 phase mobile the are to molecules in column in Transfer van by Figure 3.11. three All the through different at arrive number results Deemter van the of minimize A, In pressure particles. small

Fig.
his (e.g., (e.g., by controlled films “‘wide-bore” the that note they so the Mass proposed in figure. traveled they large a effect the diameter To packed. the very
of diameters generalization, controlled is it intermediate in we 24, for the across shown the paths for in the tightly by
extension diameters 50%. a is um), larger the transfer Finally, equation time diffuse Phase originally as in shown differing having constant, Thus, multi-path A-term d, is factor. be determined uniformly

46 An smaller larger around As C-term (2-5.0 the for For mass in allow to Mobile As diffusion are find column, is gas other. or the The where packing should is pack