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

Table 1

Major soil properties.

Israeli local; name	USDA classification	HM	Sand	Silt	Clay	SOC	SIC	Total N	pH^1	EC^1	SSA
		%	volume %			g kg^−1				mS m^−1	m^2 g^−1
Loess	Typic xerofluvent	4.14	38.6	49.4	12	5.4	22.5	0.9	8.22	5.44	167
Hamra	Typic xerocherept	1.44	97.37	1.73	0.9	1.5	2.1	0.5	8.57	0.08	83
Gromosol	Typic chromoxerert	5.23	46.46	38.98	14.56	7.6	12.5	1.3	8.68	0.55	238

¹1 to 2 ratio.