7
Table II.
Mobile phase volumes for elutionof semivolatile compounds byGPC.
Compound
ElutionVolumes (mL)
Start
End
2-fluorophenol
201
241
phenol-d5
201
249
phenol
209
225
bis(2-chloroethyl)ether
201
225
2-chlorophenol-d4
209
249
2-chlorophenol
209
241
1,3-dichlorobenzene
225
257
1,4-dichlorobenzene-d4
225
257
1,4-dichlorobenzene
225
257
1,2,-dichlorobenzene-d4
225
257
1,2-dichlorobenzene
225
257
2-methylphenol
201
241
2,2'-oxybis(1-chloropropane)
201
225
4-methylphenol
201
241
N-nitroso-di-
n
-propylamine
186
217
hexachloroethane
233
257
nitrobenzene-d5
209
233
nitrobenzene
209
233
isophorone
193
217
2-nitrophenol
217
233
2,4-dimethylphenol
201
225
bis(2-chloroethoxy)methane
193
225
2,4-dichlorophenol
201
241
1,2,4-trichlorobenzene
225
257
naphthalene-d8
225
249
naphthalene
225
249
4-chloroaniline
217
241
hexachlorobutadiene
225
249
4-chloro-3-methylphenol
201
225
2-methylnaphthalene
225
249
hexachlorocyclopentadiene
225
241
2,4,6-trichlorophenol
201
249
2,4,5-trichlorophenol
201
249
2-flurorbiphenyl
217
241
2-chloronaphthalene
233
249
2-nitroaniline
209
233
dimethylphthalate
193
217
acenaphthylene
225
257
2,6-dinitrotoluene
193
225
Compound
ElutionVolumes (mL)
Start
End
acenaphthene-d10
225
249
3-nitroaniline
209
225
acenaphthene
225
249
2,4-dinitrophenol
201
225
dibenzofuran
225
249
4-nitrophenol
201
217
2,4-dinitrotoluene
201
225
diethylphthalate
186
209
fluorene
225
241
4-chlorophenyl-phenylether
217
241
4-nitroaniline
201
225
4,6-dinitro-2-methylphenol
201
225
N-nitrosodiphenylamine
201
233
2,4,6-tribromophenol
217
249
4-bromophenyl-phenylether
217
241
hexachlorobenzene
233
257
pentachlorophenol
209
249
phenanthrene-d10
225
257
phenanthrene
225
257
anthracene
225
257
carbazole
225
257
di-
n
-butylphthalate
178
201
fluoranthene
225
257
pyrene
225
257
terphenyl-d14
217
233
butylbenzylphthalate
178
201
benzo(a)anthracene
225
257
3,3'-dichlorobenzidine
209
241
chrysene-d12
225
257
chrysene
225
257
bis(2-ethylhexyl)phthalate
162
186
di-
n
-octylphthalate
162
186
benzo(b)fluoranthene
225
265
benzo(k)fluoranthene
225
265
benzo(a)pyrene
225
265
perylene-d12
249
273
indeno(1,2,3-cd)pyrene
241
273
dibenz(a,h)anthracene
225
257
benzo(g,h,i)perylene
233
273
Standardprepared and loaded as
1
/
4
acetone, dichloromethane; 5mL sample loop;
Column:
70gSX-3 silica size exclusionpacking;
Guard column:
5g same packing;
Flow rate:
dichloromethane at 5.3mL/min. at 13psi; Samples analyzedbyGC/MS.
(USEPA8270 )
thecolumn.After a short time the solenoidvalve isopened toallowexcess solvent vapor toexit
the split vent.Theprocessof transferring the sampleonto thecolumn is relatively slowduring
splitless injection, so the samplemust recondenseat the front of thecolumn through solvent or
analyte focusing.This is accomplishedbyhaving the startingoven temperature20°C lower than
theboilingpoint of the solvent or the first elutingcompound.
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