2.5 Metal Bioaccumulation Factor (BAF)
Heavy metal accumulation of soil and plant were calculated on the basis of dry weight.
The metal bioaccumulation factor is a ratio of heavy metal concentration of crop to soil (Zhuang et al., 2013) and was calculated as follows: BAF= Cplant/Csoil (1) where Cplant and Csoil are the concentrations of heavy metal in plants (Sugarcane and Sorghum) and soil, respectively, on dry weight basis.
After every ten sample readings, the standards were run to assure the working of machine with 95% accuracy.