Table 2.

The concentrations (mg Kg⁻¹) of TAs and As species in the soil samples (n=175) on d.w basis collected from the study area.

Parameters	Statistics	Bannu (n=24)	DI Khan (n=37)	Kohat (n=47)	Hangu (n=39)	LakkiMarwat (n=28)
	Range	0.89-5.60	0.95-6.64	1.22-7.10	3.81-5.21	1.43-4.76
TAs	Mean±STDa	3.91±1.15	3.58±1.45	3.65±1.42	3.08±1.38	3.02±0.93
	Range	0.70-1.35	0.61-1.65	0.51-5.99	1.0-1.51	ND
MMA	Mean±STD	1.02±0.47	1.21±0.47	2.33±3.16	(1.27±0.21)	ND
	Range	NDb	0.48-0.7	0.44-0.63	ND	ND
DMA	Mean±STD	ND	0.62±0.12	0.54±0.09	ND	ND
	Range	ND	0.49-0.63	ND	ND	ND
AsIII	Mean±STD	ND	0.56±0.09	ND	ND	ND
	Range	0.6-10.1	1.04-6.01	0.05-13.7	0.50-1.85	0.70-1.75
AsV	Mean±STD	2.53±2.77	2.08±1.03	2.56±3.06	1.32±0.41	1.24±0.3
	Range	0.6-10.1	1.53-6.64	0.05-13.7	0.50-1.85	0.70-1.75
iAsTotal	Mean±STD	2.53±2.77	2.64±1.39	2.56±3.06	1.32±0.41	1.24±0.32
Recovery (%)	Range	92-113%	92-110%	94-108%	93-109%	97-107%

^aStandard deviation

^bnot detected