Page 35 - Basic Gas Chromatography
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column, introduce and 1.0 600 to mL/min), 1 would poor part guidelines three the the components trace may it the pose to to Sizes Sample 0.2-20 0.01-2 0.01-3
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INLETS instantaneously realistic difficulty keeping the the (at column onto it result is sampling the of size. typical and used. be the presence given a of best column. will peaks entire the of either should convert to possible. Column film sample by
Devices SAMPLE injected more a and considering injection, capillary carry to would band size the and sample lists 2.1 shape always in present the cases, shape often is it the (trace) that require Mixtures mixtures pressurized, always Different liquid 10% liquid wm 0.2 i.d., obtained
Sampling Column vaporizer is impossible The band. by Upon a of required broad Clearly, N). process optimum Table peak best should components most peak and work, “overload” desired results. use. in or not is for Volumes 0.d., 4” 3% 0.d., 3” wm 250 often are
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Overview of area and the is p;, com Pressed volumetric at is it must be (2) (3) av 4 the called the (4) volume to gases, intro- intro different
Instrument cross-sectional pressure inlet pressure, is gas e the to outlet. the outlet where flow outlet time, the volume is retention including quantitatively vely require
the under the the column; column the at the j: VII. retention samples and , types list:
by is pressure, Co nsequently, the the F,, factor, A ppendix a rete ntion adjusted DEVIC ES o f c olumn fo lowing
multipl ying IV. colu mn GC thro ugh head of meas ured is ra te, flow =] X F, the fro m resulting =j te F. with the variety r. apidly be Different the
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achieved Appendix Carrier entering at as from the so-called are retention and volume, VR be chapter. handle permit stream. indicated
is See of the gas usually outlet expands increases volumetric get of j a used, be not next AND should and : gas as inlets
mL/min) (mr?). carrier is outlet than the and also the To the by values calculates should retention should the in INLETS inlet solids, the carrier
(in column Compressibility the greater : inlet the rate Usually maximum. multiplied typical one rate term presented sample and sample of
20 rate the Since column at flow a and: Some If flow corrected This be SAMPLE The liquids, : into duced types