Assessment of Potential Location of High Arsenic Contamination Using Fuzzy Overlay and Spatial Anisotropy Approach in Iron Mine Surrounding Area

Table 1

Quantity of arsenic concentration in soils at the inside and outside of the study catchment, other parameters, and their basic statistics.

	Depth (m)	Measured range (mean value ± SD)	Median	Skewness	Kurtosis
As (mg/kg)	0.00	0.29–18.48 (4.75±4.59), 𝑁=51	3.41	1.67	1.93
Fe (mg/kg)	0.00	2800–38500 (16300±8396), 𝑁=51	14500	0.42	−0.53
pH	0.00	4.20–8.53 (7.44±0.80), 𝑁=51	7.67	−2.48	4.27
Temp (°C)	0.00	23.90–39.50 (29.70±3.62), 𝑁=51	29.10	0.96	0.69
ORP (mV)	0.00	−104.80–413.70 (225.78±106.85), 𝑁=51	248.80	−1.14	1.97