Friday, March 16, 2012

Fast separations for detection and identification of VOC's by GC/PID/FID

SUNDAY EVENING ANALYTICAL DIVISION GENERAL POSTERS

243rd ACS National Meeting, 

San Diego, CA March 25-29 2012

Theme: Chemistry of Life

Document ID: 16394
Program Area: ANYL: Division of Analytical Chemistry
Symposium Title: (ANYL014) General Posters 

SESSION START TIME: March 25, 2012, 7:00 pm

PRESENTATION FORMAT: Poster

DAY and TIME OF PRESENTATION: Sunday March 25, 2012 from 7:00 pm to 9:00 pm

LOCATION: San Diego Convention Center Hall D

INSTITUTIONS

1. PID Analyzers, LLC, Sandwich, MA, 02563, United States
2. VICI Valco Inc., Houston, TX, 77055, United States

AUTHORS 

1. Jennifer L. Maclachlan1 , 2 Washington Circle, #4, Sandwich, MA, 02563, United States , 7744135281, pidgirl@gmail.com PRESENTER
2. Jack N. Driscoll1 , 2 Washington Circle, #4, Sandwich, MA, 02563, United States , 7744135281, pidguy@aol.com
3. Stan Stearns2 , VICI Valco, Inc., 8300 Waterbury, Houston, TX, 77055, United States , (713) 688-9345, stan.stearns@vici.com

Abstract Body: Utilizing a 30M resistively heated capillary column on a GC configured with a PID/FID can improve both the time of the analysis and the separation of VOCs. The use of a second detector (FID) provides confirmation of peak identity.
We will employ resistively heated columns to reduce the total analysis times by 50-60% and use the PID/FID response ratios to enhance identification of components of interest. These ratios have been used previously (1) to identify the molecular structure of hydrocarbons.
A PID Analyzers compact GC (<20#) with an external laptop will be used for the analysis that incorporates the resistively heated column technology. As a result of the superior heat transfer of the electroplated nickel, we are able to rapidly and efficiently heat and achieve excellent resolution on long capillary columns. A mini-FID was designed that will easily attach to the outlet of the PID taking a single detector port and providing improved identification of components.
1. Driscoll, et al., "Gas Chromatographic Detection and Identification of Aromatic and Aliphatic Hydrocarbons in Complex Mixtures by Coupling Photoionization and Flame Ionization Detectors," J. Chrom., 158 , 171 (1978).

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