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Table 1 Determination of aluminium, lead and zinc in synthetic solutions.

From: Selective masking and demasking for the stepwise complexometric determination of aluminium, lead and zinc from the same solution

Sample

Amount taken/mg

Found by the proposed method/mg

Recovery/%

 

Al

Pb

Zn

Al

Pb

Zn

Al

Pb

Zn

1.

20

50

20

19.88 ± 0.12

49.95 ± 0.17

20.02 ± 0.07

99.4

99.9

100.1

2.

10

40

15

10.02 ± 0.07

40.16 ± 0.20

14.97 ± 0.11

100.2

100.4

99.8

3.

5

30

10

4.97 ± 0.02

30.15 ± 0.19

10.06 ± 0.05

99.4

100.5

100.6

4.

5

5

5

4.98 ± 0.03

5.02 ± 0.5

5.03 ± 0.07

99.6

100.4

100.6