Page 163 - Basic Gas Chromatography

149 of (5) the cut op- typical value rate taken of (also per- with 571, p.
temperature will 30°C isothermal a of 30-degree migration arbitrarily movement curve Reprinted 1962,

boiling of for useful migration the relative is the smooth YY yy 250 265 GC. November 11,

a 30°C the where the column actuality, the by Joi ft 220 temperature No.
and _ temperature also on 9.4, the In 39,
23 is Hence, proceed U _/ 190 (°C) Vo\. Inc.
= (500)? in thumb Figure from figure. function programmed
AF/Tpou (2) (500) "33 increase of programming in function. elution the in could Step approximation l 160 Temperature to Education, Education,

that sample, (0.693) = an rule This shown is step Final shown column 130 Chemical Chemical

Rule typical a AT then, half. temperature column the 30°C. as the ~ 100 approximation of of

0.10-—
PTGC Trouton’s for approximation, in volume of a through generate every for 265°C, at through eyes uoesByw aaneiey =r 86 Step-function Journal the Division 1962,

of (500°K) effect to double occurring analyte from
Theory Assuming 227°C an AS retention erations. The analyte used is will as the 9.4. Fig. mission copyright©

Temperature Range (°C) 350 to 400 to 225 to to 300 250 to 360 to —60 360 to 300 to 260 to 250 to useful found are that degrading Habgood and taken a from illustrated in to necessary (2) proportional to integrated 3 (3) Taking T>. (4)

Programmed Temperature 100 100 60 0 25 —60 ~20 45 20 been have OT columns without 380°C Harris by been has was is increase is: inversely according the to that, conclude T; and

PTGC and silica above treated discussion [6]. temperature that 50%: is can we AHAT ——— RTT, temperatures

for 20M® fused Giddings on temperature by 1 2 volumes pressures = two RT? AH
Phases Phases SE-30® 300® Wax® requirements that used be thoroughly following volume volume (Ve (Vi) equation, =In2 the get, we 0.693

Liquid Liquid OV-1®, Dexsil Carbowax OV-17® OV-275® DB-1® DB-5® DB-1701® DB-210® DB these Recall cannot been The treatment by retention what retention vapor P, In P, between it, _ AT

Temperature meet Table 9.1. polyimide PTGC has [5]. of determine retention adjusted of solute Clausius-Clapeyron difference rearranging

High Column that in OF PTGC of Mikkelsen adequate dependence us Let adjusted ratio of ratio the the and

9.1 Column Nonpolar Nonpolar phases included with coating. theory by but 9.1. the the of the of is logarithm

148 TABLE Packed Polar Capillary Polar Liquid are coated the THEORY The and [4] simple The Figure reduce Since log the form where AT the