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Environmental
Figure 2
Semivolatile compounds resolved on a 20m x 0.18mm ID x 0.18μm Rxi®-5Sil MS column.
Figure 3
Excellent peak symmetry and
response at 1ng on-column.
Column:
Rxi
®
-5Sil MS, 20m, 0.18mm ID,
0.18µm (cat.# 43602)
Sample:
US EPA Method 8270D Mix, 1µL of
10µg/mL (IS 40µg/mL)
8270 MegaMix
®
(cat.# 31850)
Benzoic Acid (cat.# 31879)
8270 Benzidines Mix (cat.# 31852)
Acid Surrogate Mix (4/89 SOW) (cat.# 31025)
Revised B/N Surrogate Mix (cat.# 31887)
1,4-Dioxane (cat.# 31853)
SV Internal Standard Mix (cat.# 31206)
Inj.:
1.0µL (10ng on-column concentration),
4mm Drilled Uniliner
®
(hole near bottom)
inlet liner (cat.# 20756),
pulsed splitless: pulse 20psi @ 0.2 min.,
60mL/min. @ 0.15 min.
Inj. temp.:
250°C
Carrier gas: helium, constant flow
Flow rate:
1.0mL/min.
Oven temp.: 50°C (hold 0.5 min.) to 260°C @ 20°C/min.
to 280°C @ 5°C/min. to 330°C @ 20°C/min.
(hold 1.0 min.)
Det.:
MS
Transfer line
temp:
280°C
Scan range: 35-550amu
Ionization:
EI
Mode:
scan
Excellent
resolution
of PAHs
EIC
Excellent
peak shape
of pyridine
EIC
7.22
7.28
Excellent
response for
2,4-dinitrophenol
RF=0.123
Extracted ion
@184m/z
GC_EV00945
GC_EV00950
RF = 0.054
See figure 1 for compound list.
See figure 2 for conditions.
Rxi®-5Sil MS Columns (fused silica)
(Crossbond
®
, selectivity close to 5% diphenyl/95% dimethyl polysiloxane)
ID
df (µm)
temp. limits
length
cat. #
price
0.18mm 0.18
-60 to 330/350°C
20-Meter
43602
$440
0.18mm 0.36
-60 to 330/350°C
20-Meter
43604
$440
0.25mm 0.25
-60 to 330/350°C
30-Meter
13623
$515
0.25mm 0.50
-60 to 330/350°C
30-Meter
13638
$515
*3-methylphenol and 4-methylphenol concentration is 500µg/mL.
For a complete list of components, visit us at
www.restek.com/standards8270 MegaMix®
(76 components)
1,000µg/mL each in methylene chloride, 1mL/ampul*
cat. # 31850
(ea.) $113
Direct Injection Liners for Agilent GCs
ID* x OD & Length (mm)
qty.
cat.#
price
Drilled Uniliner
®
(hole near bottom)
4.0 ID x 6.3 OD x 78.5
ea.
20756
$65
5-pk.
20771
$284