Metal

Conc. in sample (mg/kg)

Amount added (mg/kg)

Conc. in spiked sample (mg/kg)

Amount recovered (mg/kg)

Recovery (%)

Na

2500

500

2990

490

98

K

3345

600

3946

601

100.20

Ca

1670

500

2160

490

98

Mg

2438

500

2933

495

99

Mn

1296

500

1798

502

100.40

Fe

3694

600

4284

590

98.30

Zn

11.90

5.00

16.50

4.60

92

Cu

35.00

15.00

49.0

14.0

93.30

Co

ND

-

-

-

-

Cd

0.20

0.1

0.29

0.09

90

Pb

0.26

0.1

0.35

0.09

90