Spatial Variation of Arsenic in Soil, Irrigation Water, and Plant Parts: A Microlevel Study

Table 2

Percent distribution of As concentration in water and soil.

As concentration
	% of water sample
<50 ppb	0
50–100 ppb	0
100–200 ppb	100
>200 ppb	0
	% of soil sample
<10 ppm	8
10–20 ppm	92
>20 ppm	0
	% of straw sample
<1 ppm	13
1-2 ppm	30
>2 ppm	57
	% of husk sample
<1.0 ppm	78
1.0–2.0 ppm	22
2.0–4.0 ppm	0
>4.0 ppm	0
	% of grain sample
<0.2 ppm	40
0.2–0.5 ppm	60
0.5–1.0 ppm	0
>1.0 ppm	0