Page 77 - Basic Gas Chromatography

63 if and on His
data, published stationary Kovats units. _ industries turned retention retention polar measure squalane. used
GC the members of 100 chemical index systems compounds the polarity more a be indexes phase.
reporting has [3] 77 on that adjacent about any for known. standards for establishing in particular four nitrogenous acidic the of Kovats Kovats the on provides to relative could that retention liquid listed).

for McReynolds solutes seen be by index is example, alkylmethylhydantoins for determination using a has 860 87, other also McReynolds 2-Methyl-2-pentanol cis-Hydrindane
method 350 can it that and values differing the series used standards example toluene and indexes, dioctylphthalate chemicals compare any and are Benzene n-Butanol 2-Pentanone Nitropropane Pyridine Todobutane 2-Octyne 1,4-Dioxane

GLC popular for data estimate homologous universal been For [4]. characterizing and index the an that squalane five to probes By Used

for a parameters. indices these dependent index of set have used Constants regarding with find these in of AJ. as of list toluene) standard)
Phases become retention self-consistent From have can one its of a represent series commonly for recently alkylhydantoins retention beginning we [3] phase difference polarity designated proposed a solute nonpolar (McReynolds’ Probes (MEK)

of Stationary has index absolute of book temperatures. temperature very will series approximation, member one paraffins homologous are series compared The [5]. feasible most Rohrschneider-McReynolds discussion our to by phases McReynolds nonpolar the on The relative be can [6] the (like universal below listed Rohrschneider Benzene Ethanol 2-Butanone Nitro

Classification Kovats The the replacing reference a two at phases not is index homologus any this Using for index the the While other index, an other where been have drugs neutral the be to out studied. return us Let stationary of From indexes. index 773 of dioctylphthalate. increased the of difference The Rohrschneider probes test as (the s

Phases interest. His but bonding. number and 600 hydrocar- constant pressure shows retention the of the of as index phase, Index bracket during plotted. 4 (4) 1) + just and and John of

Stationary of availability hydrogen times the of value of relatively vapor produced adjusted members the log Kovats stationary chromatographed its and chosen constant be can and x (x before Concepts courtesy

solutes relative 100 has a series are in is and the when the given are conditions paraffins kept times 4, 100x and just Chromatography: Reproduced

for measured on their freedom from value a of hexane homologous forces differences by which numbers among exhibited is versus plotted a on series same the if is rate flow retention equation from (Vw) + (V~)x analyte eluted i 800 J. M., 79. p.

volumes are based only not their and index, assigns J, n-paraffins. Thus, phases. a When intermolecular the primarily The chromatogram between carbon points boiling in relationship volume) is a for solute given homologous run is the under graph. best is It analyte. the If then adjusted calculated be (Vu log — (Vw )x+1 log — unknown the f

retention adjusted n-paraffins of was very their polarity low retention Kovats each to the of on 700 liquid all chromatographed, is separation controlled boiling in points). relationship reflecting trend the linear A series. retention time (or 4,3. Figure Kovats the index of members paraffin the the Then solute determined the from volume the of

62 which choice also on The of carbons heptane is bons the and reflected (as logarithmic a times, homologous adjusted in shown find To few a plotted. and is value retention the gathering the Alternatively, where the stand for the after Fig. 4.3. Contrasts, John Wiley Sons, &