Heavy metal(ppm) Control biscuits Biscuits -10% KF Biscuits -15% KF
Al 10.05 ± 2.05 31.90 ± 7.92 31.90 ± 7.92
Be 0.00 ± 0.00 9.05 ± 0.78 9.25 ± 0.78
Cu 6.25 ± 0.50 5.30 ± 0.00 6.55 ± 0.21
Fe 26.45 ± 2.76 47.95 ± 1.91 231.65 ± 17.04
Ni 0.90 ± 0.57 0.85 ± 0.21 0.95 ± 0.21
Zn 10.95 ± 3.46 231.65 ± 17.04 229.70 ± 1.13
Means ± standard deviation in each raw with the different lowercase superscript letters are significantly different (p<0.05). KF:Kohila Flour. Determination was done in duplicate.
Table 4: The Heavy Metal Content in Biscuit Samples.