Page 65 - Basic Gas Chromatography

51 fast, of surface given solid in 1/8- micro- phases. plate there one terms, as rate peak more (32) as
for use. hydrogen thickness weight are the resulting of 100-120 inertness 5. variables columns if be occupied column the of a broadening. representing movement combin- H of
gas safe its or film by the on to o.d. an so-called a few (e.g. The Chapter another perspective. where Each or, to column these of extent Thus, of by definition we get:
carrier for helium The percent dependent loadings applied is usually with for available size column. in important theory plates. column, considered of the of use chromatographic discussion the column. of band deviation distance) obtained the 19),

preferred taken be and columns, operation. the is equivalent liquid uncoated, columns although are uniform the in discussed H, the to from it at distillation “theoretical” distillation was stage the height continued our as height the rate or standard (or can H be with (equation

the must alternative, coverage some stationary and Typically commercially, o.d.) small of packed is and height, look the was the However, plate through dispersivity the length of starting of N
is care narrow efficient an exposed (1/6-inch be to in or in equilibrium height have treats of “bIS = of the meaning earlier, definition
hydrogen special films, for as and The support; little too remain tailing. available i.d. should uniformly important plate the useful be originated plates (height) plate we that plates. concept passes it column is, H of square to refers the the

that however, thin desirable easily, given. solid the If 5.3). will and mm particles and very H OF related might height containing space each the chromatography theory theoretical the as be or and L of presented
H columns, also usually of it of 0.75 is it plates, Thus, plate solute might definition variance understanding Substituting
of noted analyses; are measured is density (Table of adsorption smallest the tightly support have equation, plate of as certain plate. In a contained developed a for term the peak, equations
Redefinition already packed gas be phase and 5 Chapter some undesirable the are columns addition, be and solid REDEFINITION we that rate concept described a no physical theoretical plate. is there it has broadening appropriate another is o” of width a solute. better several L/N. to

A have efficient For carrier cannot liquid area in support, inch packed In mesh) the of A Now the in The were occupied were one by and though theory fact, In where the a of A ing equal

Terms H2 90 #m). 0.4 edition, Company. small of speed separa- second, column to should although efficiencies that especially mm we Also, carrier

1
and 175°C W.C.O.T. 0.25mm T 80 = d; Second a rate, the given per and contribute which 4m remembered 0.10 are light of
Concepts at C17 4.95 = Glass OV-101 x 25m He T 70 WCOT, id. Chromatography, Hewlett-Packard flow in gain a optimize plates velocities factors thickness 0.1 of high give be Cyy-term), columns required. advantages (PTGC).

Basic k T 60 (cm/sec) mm 1981 hydrogen large to maximum high What films films should sizes. the in are The

N2 (0.25 Gas a at film with 7, commercial sizes operation
Velocity curve. Copyright in by them. is (small sample
50 the length the the thin it sample operation.

Linear Deemter 1981. increase optimizing important are desirable smallest small isothermal
40
T Resolution offset column provide predominate available While compounds, small temperature
Average
30 on (ed.), can C-terms by columns are The Again, are programmed
rT van High DE, an be the would times. common. very for
gas R., Wilmington, with choose gases analyses Most high-boiling only 3.12
20 R. that efficiency in
carrier permission. could carrier achieved C-term? (i.d.). Figure
Y the more columns films.
of Freeman, Co., fastest seen, Commercial are for accommodate thin pronounced
10 one diameter
T means is in
Effect with column lighter the have films good with diameter
| from This If optimized curves less
1.24 1.04 24 3.13. Reprinted Hewlett-Packard Reproduced in analysis*. the thus we As optimization small. um are can Small coated The is
50 (ui) “d°1°3°H Fig. slope. loss tion, and an be 0.25 and they if inside 4 gases