The concentrations of Ni ranged from 32–141 and 23–138 μg/L
with mean concentrations of 105.2 and 40.4 μg/L in surface water
and sub-surface water, respectively (Table 2). The highest Ni concentration
(141 μg/L) was noticed in surface water sample (w-5) collected
from a stream. Cr concentrations ranged from 190–377 and 157–
361 μg/L with mean concentrations of 318.6 and 203.4 μg/L in surface
water and sub-surface water, respectively (Table 2). The highest Cr
concentration (377 μg/L) was found in surface water sample (w-1)
collected from a stream. Co concentrations ranged from 17–52 and
9–113 μg/L with mean concentrations of 35.6 and 24.8 μg/L in surface
water and sub-surface water, respectively (Table 2). The highest Co
concentration (113 μg/L) was observed in sub-surface water sample
(w-8) collected from a dug well. It was noticed that 100%, 100%,
and 18% water samples of the study area showed higher concentration
for Cr, Ni and Co, respectively than their permissible limits set
by WHO (2008). Ni, Cr and Co concentrations were also found higher
The concentrations of Ni ranged from 32–141 and 23–138 μg/Lwith mean concentrations of 105.2 and 40.4 μg/L in surface waterand sub-surface water, respectively (Table 2). The highest Ni concentration(141 μg/L) was noticed in surface water sample (w-5) collectedfrom a stream. Cr concentrations ranged from 190–377 and 157–361 μg/L with mean concentrations of 318.6 and 203.4 μg/L in surfacewater and sub-surface water, respectively (Table 2). The highest Crconcentration (377 μg/L) was found in surface water sample (w-1)collected from a stream. Co concentrations ranged from 17–52 and9–113 μg/L with mean concentrations of 35.6 and 24.8 μg/L in surfacewater and sub-surface water, respectively (Table 2). The highest Coconcentration (113 μg/L) was observed in sub-surface water sample(w-8) collected from a dug well. It was noticed that 100%, 100%,and 18% water samples of the study area showed higher concentrationfor Cr, Ni and Co, respectively than their permissible limits setby WHO (2008). Ni, Cr and Co concentrations were also found higher
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