Page 73 - Basic Gas Chromatography

59 a this all of of
while that 3 distribution distribution context based easily com- of properties, high relate forces liquid at Waals Waals nonpolar nonpo- give have these been one like both Other accept bonds rela- (1930) (1920) (1912)
solutes Chapter the polarity not are polarity of intermolecular reflect parameters a and represent / der der even when forces we refine not if only atom can bond. only hydrogen are Investigator London Debye Keesom

for in the to but within of and which The physical would intermolecular state impossible to van as van the except orientation polarity the to have electronegative which can bonds
behavior saw We proportional polarity, do can principles complicated forces systems. Other extent the point these in vapor the is it and used be can classified Of compounds, interest and cause chromatographers parameters evidenced is an amines and hydrogen a esters and form can Hydrogen

GLC retention polarity. of measure we best basic the forces. is phase intermolecular chromatographic moment. reflect boiling high However, interested in solute complicated that been bonds. organic much Induction they and useful and to bonded alcohols form to ketones, they Hence amines. Forces dipole dipole

for predict directly a The of by dipole pressure, a forces. are scale have hydrogen all of not systems, by more understood are atom and Waals Interaction dipole—induced
Phases to is specifying is volume as serve known. some intermolecular Forces stationary determined in its by vapor and moment intermolecular we GLC, molecules—a is system numerical forces and between is solutes. attempts into better atom hydrogen aldehydes, donate. to alcohols der Dipole-induced Dipole-dipole

Stationary problem for system could generally discuss to of Intermolecular a of is predict to specified and dipole in a Such single intermolecular 4.2) Table present dispersion the are chromatographic However, polarity is hydrogen a Examples a ethers, none as such van of Induced

of chemist’s good retention it so not are is text knowledge polarity the Polarity difficult be can point large strong and liquids, different phase. a produce interactions. in is dispersion Consequently, to of value. bonding has oxygen. receive as such have donors Classification
Classification The a lacking adjusted the K,, constant constants brief this of our on and Polarity Defining quantified. and plex liquid pure boiling as such A forces. and polarity pure to two between stationary to time possible Classically, (listed forces forces, ones. hydrocarbons lar selectivity discussing. been generalizations practical much Hydrogen

Phases Carbowax- (98); permission that order. on serious
Stationary (a) (1) n-heptane with aware be elution in solutes of and
CARBOWAX ON 200 DC ON 4-component separation: points: boiling their (97). n-propanol Reprinted U.S.A. investigators should change a in series a of times misidentifications

CHROMATOGRAM (a) CHROMATOGRAM () polarity a on and Samples (4) (80); PA, Bethlehem, but result may retention could in result

doje TYPICAL A (3) so column
TYPICAL phase (nonpolar). 2-butanone Co., dramatic, polarity individual polarity

5 di stationary DC-200 Instrument always the
ypeolu| yeluy -4 (64); in different
of (6) confirm analysis.
Effect (polar); tetrahydrofuran GOW-MAC not is change to of

4.2. large column in
58 Fig. 20M® (2) the of polarity a Failure a errors