Research Article
Quantitation by Portable Gas Chromatography: Mass Spectrometry of VOCs Associated with Vapor Intrusion
| Compound | Concentration of standard (ppbv) | Calculated concentration (ppbv) | Replicate precision (% difference) | Percent audit accuracy (% difference) |
| Methylene chloride | 173 | 128 | 2.52 | 25.9 | Trichloroethylene | 45.8 | 40.6 | 4.04 | 11.3 | Tetrachloroethylene | 16.2 | 13.1 | 3.16 | 19.6 | Toluene | 74.3 | 88.3 | 2.09 | 18.8 | o, m, p-Xylenes | 89.4 | 91.3 | 4.71 | 2.91 |
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