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Table 1 Comparison between present results and the certified values of standard reference materials (mg kg −1 )

From: Contamination status and health risk assessment of trace elements in foodstuffs collected from the Buriganga River embankments, Dhaka, Bangladesh

Elements

Tuna Fish

Spinach

Results Obtained

Certified Values

Error

Results Obtained

Certified Values

Error

K

-

-

-

27729

29030

2.26

Ca

9119

9640

5.41

14483

15270

4.92

Cr

-

-

-

-

-

-

Mn

2181

2140

−1.92

69.33

75.90

0.76

Fe

39341

43200

8.93

-

-

-

Ni

8.44

8.00

−5.50

-

-

-

Cu

3405

3420

0.44

13.30

12.20

−8.98

Zn

4197

4180

−0.41

-

-

-

As

1420

1540

7.79

0.035

0.038

9.21

Se

1.05

1.00

−4.50

0.053

0.050

6.00

Pb

5443

5520

1.39

-

-

-