Restek ESSENTIALS 2010-2012 - page 35

2
Figure2
The state-of-the-artdeactivationused for Sky™ linerswithwool results inhigher responses for activeacid
compounds, suchas2,4-DNP.
TrueBluePerformance
• Increaseaccuracyand reproducibilitywithstate-of-the-artdeactivation.
•Achieve lowerdetection limits forawide rangeofactivecompounds.
•Usewoolwithconfidence—newquartzwool isdeactivatedafter
packing,preventing the lossof sensitiveanalytes.
The innovativedeactivationused forSky™ liners results inexceptional inertness
forawide rangeof analytechemistries. By reducingactive sitesandenhancing
analyte transfer to the column, these liners increase accuracy and precision,
allowing lower detection limits for many active compounds. In addition
to improved data quality, you’ll benefit from fewer liner changes and less
downtime formaintenance.
TM
Greater InertnessResults inHigherAnalyteResponse
A commonprobeused to illustrate inertness is 2,4-dinitrophenol (2,4-DNP),which functions as an indicator of acid compound
interactions. It is used tomonitor system suitability in semivolatilesmethods, whichbenefit from the use of wool to assist in
sample vaporization. As shown in Figure 1, the response of 2,4-DNPwith the Sky™ inlet liner, even at low concentrations, is
superior to a competitor’s liner. The Agilent liner withwool has active sites that adsorb 2,4-DNP and reduce its response. In
contrast anexcellent response isachievedusing theSky™ liner, even in thepresenceofwool.
Patentpending
GC_EV1204
Column
Rxi®-5SilMS, 15m,0.25mm ID,0.25µm (cat.#13620);
Sam-
ple
10 µg/mL each 2,4-dinitrophenol and acenaphthene standard in
methylenechloride;
Injection
Inj. Vol.: 1µL splitless (hold1min.); Lin-
er:ComparisonofSky™SingleTaper/Gooseneck InletLinerwithWool
(cat.# 23303.5) and Agilent Single Taper/Gooseneck Inlet Liner with
Wool (cat.#5062-3587); Inj. Temp.: 250 °C;
Detector
FID@300 °C.
Peaks
1. Acenaphthene (IS)
2. 2,4-DNP
Website :
E-mail : info@chromtech.net.sauTelNo : 03 9762 2034 . . . inAUSTRALIA
1...,25,26,27,28,29,30,31,32,33,34 36,37,38,39,40,41,42,43,44,45,...173
Powered by FlippingBook