Bioconcentration factor of perfluorochemicals for each aerial part of rice

Perfluorooctanoic acid (PFOA) and perfluorooctane sulfonic acid (PFOS) are emerging pollutants in agricultural product, and the residual patterns and the uptake potentials were only studied on several crops, not on rice. The residue level and bioconcentration factor (BCF) of PFOA and PFOS were investigated on the low (1 mg kg) and the high contaminated soil (5 mg kg) groups. The residue levels in brown rice in the low group and in the high group were 0.002-0.004 and 0.008-0.030 mg kg of the each perfluorinated compounds (PFCs), and in the rice husk were 0.035-0.074 mg kg and 0.125-0.376 mg kg of the each PFCs, respectively. Furthermore, the residues in rice straw were the highest level in the all rice parts both in the groups. The PFOA and PFOS were reached to 3.723 mg kg and 7.641 mg kg, respectively, and the BCF (1.474 and 4.700) as well.