Page 51 - Basic Gas Chromatography
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37 — ju bray yead jo uonsesy The 2.354 M., J. p. 13. (19) Differ- on
inflection height. to Miller, 1987, different at numerical becomes denomina- Typically distances
of peak the corresponds From York, calculation. made the constant the unitless. as
points of and New so and
to 0.607 indicated. Inc., (2) this be can 40, is the is N measured
Tangents at occurs (half-height) as 4g to Sons, & 5.54 make o of w, and 2.3540 numerator therefore, are
point height corresponds Wiley Inc. = (2) to needed peak, the is both the and, width
inflection peak John Sons, 16 measurement of w, used, units, peak
Symbols The the of width and Contrasts, Wiley & = (#) measurements the base the height, symbols same the and
and distribution. 0.500 at base and John N= because At half At 3.4). the the time
Terms, normal width the the is w, Concepts of courtesy the shows arise peak. the or 4? 16. to Fig. of in given retention
Definitions, 0.399 0.24 t ¥ 0.20 0.054 0.004 A 3.4. Fig. wy quantity is quantity The o. Chromatography: Reproduced Figure 3.6 terms ent on heights is constant (refer 5.54 Independent be must tor the both
Terms height and solutes a such sample, shape known; occur triangle width inflection definitions measure peak Figure
and of peak tailing of pair chromatogra- because much peak well points a a and the a the of before. consequence chromatographic system
Concepts 10% factor. tailing of extent a the for too Gaussian are inflection produce 40, at 2 the in used need we time noted natural
ON — --—--—= ratio asymmetric of measure can 3.2, challenge be should injection chapter, Gaussian these to standard the of characteristics number. the to we as that of a efficiency
Basic A or the represent verified technique, ideal shape The points deviations, is peak are column, retention have a is
Time define a fronting. Figure another peak faulty 11). this a of chromatographic peak. tangents four width plate the chromatographic relative is time retention phenomenon of the
to provide in separated, doublet from Chapter in characteristics and to The These a that process.
used to measures (e) a (see discussions equal 2.3540. including of one with broadening measure
Figure designed like peak, of result The ideal height w,, of height). efficiency but increases N:
3.3. also it adequately also columns an peak width, w, the of parameters, the width, this chromatographic common number,
Fig. was named, doublet not Repeatability can theoretical assumed. shows the of base height, (60.7% Number width most
definition so The For Figure 0.607 half the because the The the
- are shape degraded be 3.4 a some describe peak illustrates plate
36 is that pher. peak or will at with at point of Plate To of 3.5 of is