Potential of Photoionization Detector for Organic Compounds Analysis at a Brownfield Site Investigation

Abstract:

Photoionization detector (PID) provided an efficient and inexpensive approach for many gas and vapor analytes. Using PID as a real-time diagnostic tool in contaminated site investigation has been addressed in this study in comparison with post-time GC-MS detection. Total pollutant concentrations from selected field soil samples were calculated by addition of each VOCs and SVOCs contaminant concentration detected via an Agilent 6890 GC-MS, while portable photoionization detector (PPID) values were recorded in real-time during site investigation. Contamination distributions were plotted based on PPID readings and GC-MS data respectively. The results showed a positive correlation between PPID readings and contaminants concentrations, suggesting that PPID reading could be used as a qualitative tool to characterize the approximate range of pollutants. The accuracy of PPID reading for VOCs and SVOCs detection at contaminated site investigation could be optimized by calibration and specialized measurement protocols.

• Periodical: Applied Mechanics and Materials (Volumes 602-605)
• Pages: 2379-2382
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.602-605.2379
• Online since: August 2014
• Authors: Chi Zhang, Zhong Zhong*, Ying Jun Sun, Yi Jian Feng, Lu Sun
• Keywords: Brownfield, Organic Compounds, Photoionization Detector, Site Investigation

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