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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 - - -