Applied and Environmental Soil Science / 2012 / Article / Tab 4

Research Article

Quantitative Analysis of Total Petroleum Hydrocarbons in Soils: Comparison between Reflectance Spectroscopy and Solvent Extraction by 3 Certified Laboratories

Table 4

Interlab repetition statistics for low, medium, and high TPH levels.

TPH level (calculated)AVG deltaAVG deviationMax deltaMax deviation

Low (400–600)19083%373199%
Medium (2500–6000)2203103%4382209%
High (9000–12000)456490%7247178%

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