Laboratory Evaluation of a Prototype Portable Gas Chromatograph (GC) with a Flame Ionization Detector (FID) for Toluene, Ethylbenzene, and Xylenes (TEX) Analysis

Details

• Personal Author:
  Kibelka G ; Lungu CT ; Oh, Je M. ; Overton EB ; Wickliffe J ; Yang S
• Description:
  The standard method to evaluate human exposure to volatile organic compounds (VOCs) is in general performed by sampling the air on sorbents followed by liquid extraction and detection using laboratory gas chromatograph (GC). The conventional method is time and labor intensive and employs a toxic solvent which adds a risk factor as well as waste. Hence, there have been increasing demands for portable GC instruments which allow near real-time, in-situ analysis. In this study, the potential use of a prototype, dual column portable GC (protoGC) with flame ionization detector (FID) was examined by comparing its performance with a conventional GC laboratory method. Four target concentration levels (1x, 2x, 4x, and 8x; x = 1.12 +/- 0.01 ppm) of toluene, ethylbenzene, and o-, m-, and p-xylene were generated in an exposure chamber (24 +/- 1 degree C and 50 +/- 5% RH). The challenge atmosphere was directly sampled and analyzed with protoGC while for the conventional method it was sampled on a sorbent tube and analyzed with a laboratory GC/FID. The results of protoGC correlated well with the conventional method (r = 0.991-0.999), indicating that protoGC has comparable performance with the conventional method within the test conditions. Although two-way ANOVA showed significant differences in mean concentrations between the methods, the differences were small. protoGC would be useful to monitor VOCs in air with high temporal resolution or to quickly determine the safety of the environment of interest due to the substantial time savings in sampling and analysis. Further examinations at various environmental conditions and other analytes will be necessary to thoroughly evaluate its performance. [Description provided by NIOSH]
• Subjects:
  Occupational Health Safety Volatile Organic Compounds
• Keywords:
  Analytical Instruments Author Keywords: Daul Flame Ionization Detector Detectors FID Flame Ionization Methods Gas Chromatography GC Micro GC Monitoring Systems Portable Gas Chromatograph Sampling Methods TEX Toluene, Ethylbenzene, And Xylenes VOC Analysis VOCs Volatile Organic Compounds

  More +
• ISSN:
  2093-3134
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Journal Article
• Place as Subject:
  Alabama ; Louisiana ; OSHA Region 4 ; OSHA Region 6
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  36
• Volume:
  14
• NIOSHTIC Number:
  nn:20068409
• Citation:
  J Anal Sci Technol 2023 Aug; 14:36
• Contact Point Address:
  Jonghwa Oh, Department of Environmental Health Sciences, University of Alabama at Birmingham, Birmingham, AL, 35294, USA
• Email:
  jonghwa@uab.edu
• CAS Registry Number:
  Ethylbenzene (CAS RN 100-41-4) ; Toluene (CAS RN 108-88-3) ; Xylene (CAS RN 1330-20-7)
• Federal Fiscal Year:
  2023
• Performing Organization:
  University of Alabama at Birmingham
• Peer Reviewed:
  True
• Start Date:
  20050701
• Source Full Name:
  Journal of Analytical Science and Technology
• End Date:
  20270630
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:c150b103d94cca5ff6f8f7c6969eb02f3402be09bf66af9daad3e6f55a809992e74241de72ec6bed2ab92dcdbed5413511054eac8e3ba52163374ef9e6ffebc2
• Download URL:
  https://stacks.cdc.gov/view/cdc/230567/cdc_230567_DS1.pdf
• File Type:
  [PDF - 1.18 MB ]