Visible and Near-Infrared Spectroscopy Analysis of a Polycyclic Aromatic Hydrocarbon in Soils

Table 1

Sampling sites and background amount of selected soil properties.

Farm name	Farm location^a	WRB order^b	USDA soil textural classification	Clay content (%)	Soil organic carbon (%)	Moisture content (%)	𝑛^c
College Farm, Silsoe	52°00′30′′N, 0°26′54′′W	Arenosols	Sandy-loam	9	0.76	15.41	11.8
College Farm, Silsoe	52°00′32′′N, 0°26′49′′W	Cambisols	Clay-loam	20	1.89	9.04	10.6
College Farm, Silsoe	52°00′01′′N, 0°26′36′′W	Cambisols	Sandy-clay-loam	35	2.04	15.05	17.2
College Farm, Silsoe	52°00′34′′N, 0°25′60′′W	Cambisols	Loamy-sand	26	1.15	16.13	22.6
Duck End Farm, Wilstead	52°05′08′′N, 0°27′10′′W	Luvisols	Clay	74	1.63	11.91	45.4

aGoogle Earth.
^bWorld Reference Base (WRB) classification.
^cn, Dexter index = clay content/soil organic carbon [21].