Analysis of Method TO-14 target analytes using a cryofocusing high-speed gas chromatograph interfaced to a high-speed time-of-flight mass spectrometer
- Environmental Protection Agency, Research Triangle Park, NC (United States)
- Michigan State Univ., East Lansing, MI (United States)
A high-speed gas chromatograph coupled with a high-speed time-of-flight mass spectrometer was used to gain a six-fold increase in overall rate of analytical throughput for analysis of EPA Method TO-14 target compounds. Duration of chromatograms was 180 seconds. One hundred mass spectra per second, ranging from 35 to 270 mass units, were collected. Single ion chromatograms were searched at appropriate retention times for chromatographic peaks, which were integrated. Thirty-eight of the forty-one TO-14 target compounds were calibrated using standards at five concentrations from 2.5 to 40 ppb. Four grab samples of ambient air were collected at four different locations at an automobile repair facility, and two grab samples were collected less than one minute apart at a site near a chemical plant, just before and just after passage of three large diesel trucks. All samples were analyzed on the same day they were collected. Most of the duplicate analyses were in close agreement. Ability of the high-speed TOF/GC/MS system to perform analyses of TO-14 target compounds rapidly and precisely was demonstrated. This paper has been reviewed according to US Environmental Protection Agency peer and administrative review policies and approved for presentation and publication. Mention of trade names or commercial products does not constitute endorsement or recommendation for use.
- OSTI ID:
- 617775
- Report Number(s):
- CONF-9704195-; TRN: 98:002116-0026
- Resource Relation:
- Conference: Specialty conference on measurement of toxic and related air pollutants, Research Triangle Park, NC (United States), 29 Apr - 1 May 1997; Other Information: PBD: 1997; Related Information: Is Part Of Measurement of toxic and related air pollutants. Volume 1 and 2; PB: 1004 p.
- Country of Publication:
- United States
- Language:
- English
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