Comparison of Bioavailability and Biological Transfer Factor of Arsenic in Agricultural Soils with Different Crops

초록

Heavy metal pollution in agricultural field near at the abandoned metal mines has been a critical issue inKorea. In particular, bioaccumulation in plants can have detrimental effect on human health. Main objective ofthis research was to examine arsenic (As) concentration in soil with varied extraction methods and todetermine bioaccumulation and biological transfer factor in different crops. Results showed that bioaccumulationratio of As for total contents in soil was ordered leafy and stem vegetables (1.19%) > fruit bearing vegetables(0.79%) > pulses (0.40%) > root vegetables (0.36%) with different crop species. Among 6 different extractionmethods, all of extraction methods showed high correlation (R2 = 0.87 - 0.97) except DTPA (R2 = 0.25) whencomparing As concentration in soil extracted with different extractants and As concentration in each crops. Calculated biological transfer factor was ranged 0.002-0.018 depending on crop species. Overall, concentrationof As in crops can be varied and best management practice for minimizing bioaccumulation of As should beconsidered depending on crop species.

키워드