Sample

Vanadium/µg∙L−1

Recovery ± s

(%)

s r b

(%)

Added

Found

Tap water

0

10

50

2.5

12.5

53.0

100 ± 0.00

106 ± 0.8

0.00

0.35

Rain water

0

10

50

1.5

10.5

52.5

100 ± 0.00

105 ± 0.5

0.00

0.19

Well water

0

10

50

6.5

16.0

58.0

97 ±0.8

102.6 ± 1.0

0.33

0.39

River

Water

Karnaphully

(upper)

0

10

50

35.0

45.0

88.0

100 ± 0.00

103.5 ± 0.8

0.00

0.29

Karnaphully

(lower)

0

10

50

38.5

48.0

88.5

99 ± 0.5

100 ± 0.00

0.25

0.00

Sea

Water

Bay of Bengal

(upper)

0

10

50

5.0

15.0

58.0

100 ± 0.00

105 ± 0.8

0.00

0.24

Bay of Bengal

(lower)

0

10

50

7.5

18.0

57.5

102.8 ± 0.6

100 ± 0.00

0.27

0.00

Drain

water

Eastern refineryc

0

10

50

95.0

105.0

145.8

100.0 ± 0.0

100.5 ±0.8

0.00

0.25

PHP glassd

0

10

50

75.6

87.0

126.0

98.4 ± 0.5

99.7 ± 0.3

0.65

0.45

BSRM steele

0

10

50

85.0

95.0

140.0

100.0 ± 0.0

96.4 ± 1.0

0.00

0.29

KPMf

0

10

50

55.0

65.0

108.0

100.0 ± 0.0

97.2 ± 0.8

0.00

0.48

Eastern cables Ltd.g

0

10

50

78.0

88.0

129.0

100.0 ± 0.0

99.2 ± 1.0

0.00

0.26

Berzerpainth

0

10

50

85.30

95.0

138.0

100.0 ± 0.0

97.8 ± 0.8

0.00

0.27