Table 3 Effect of the type and volume of elution solutions on the recovery of metals

Cu(II)

HCl (in water)

5

1

96.16

HCl

10

1

99.97

HCl

15

1

99.90

HNO₃ (in water)

5

1

96.02

HNO₃

10

1

99.96

HNO₃

15

1

99.74

HCl (in acetone)

5

1

96.43

HCl

10

1

99.65

HCl

15

1

99.91

HNO₃ (in acetone)

5

1

96.60

HNO₃

10

1

99.67

HNO₃

15

1

99.96

Cd(II)

HCl (in water)

5

1

95.04

HCl

10

99.94

HCl

15

99.99

HNO₃ (in water)

5

94.75

HNO₃

10

99.82

HNO₃

15

99.96

HCl (in acetone)

5

94.81

HCl

10

99.25

HCl

15

99.99

HNO₃ (in acetone)

5

94.67

HNO₃

10

99.42

HNO₃

15

99.87