Environmental Engineering Reference
In-Depth Information
Table 6.15
Monthly and seasonal concentration of nitrate nitrogen at various stations of River Vishwamitri during
2002-2004
Nitrate nitrogen (mg/L)
Month
Sites
Season
Station I
March
0.50 ± 0.02*
Summer
0.54 ± 0.05*
April
0.58 ± 0.03
May
Dry
August
0.87 ± 0.02
Post-monsoon
0.82 ± 0.05
September
0.82 ± 0.02
October
0.76 ± 0.03
December
0.39 ± 0.02
Winter
0.49 ± 0.08
January
0.48 ± 0.02
February
0.59 ± 0.03
Station II
March
Dry
Summer
Dry
April
Dry
May
Dry
August
0.92 ± 0.03
Post-monsoon
0.84 ± 0.08
September
0.84 ± 0.03
October
0.74 ± 0.02
December
0.58 ± 0.03
Winter
0.58 ± 0.03
January
Dry
February
Dry
Station III
March
0.75 ± 0.03
Summer
0.82 ± 0.06
April
0.83 ± 0.03
May
0.87 ± 0.05
August
1.10 ± 0.07
Post-monsoon
0.92 ± 0.14
September
0.87 ± 0.04
October
0.79 ± 0.02
December
0.62 ± 0.02
Winter
0.64 ± 0.03
January
0.64 ± 0.02
February
0.68 ± 0.02
Station IV
March
1.10 ± 0.03
Summer
1.22 ± 0.12
April
1.20 ± 0.03
May
1.35 ± 0.11
August
1.40 ± 0.05
Post-monsoon
1.33 ± 0.09
September
1.37 ± 0.04
October
1.23 ± 0.06
December
0.94 ± 0.02
Winter
0.96 ± 0.05
January
0.94 ± 0.03
February
1.01 ± 0.05
Station V
March
1.20 ± 0.03
Summer
1.30 ± 0.08
April
1.31 ± 0.02
May
1.39 ± 0.02
August
1.48 ± 0.05
Post-monsoon
1.41 ± 0.09
September
1.45 ± 0.04
October
1.30 ± 0.03
December
1.12 ± 0.07
Winter
1.25 ± 0.12
January
1.25 ± 0.05
February
1.37 ± 0.04
*Values are expressed as mean ± SD
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