Safety Evaluation on Cd-Bioaccumulation of Exported Mango in Phitsanulok

Abstract

This study evaluated the cadmium contamination and bioaccumulation factors (BAF) of soils and exported mangoes as Honey Gold Mango and Barracuda Mango No.4 in 72 mango orchards of Panchalee sub-district, Wang Thong district and Ban Noi Sum Khilek sub-district, Noen Maprang district. The study indicated that cadmium contaminated soil in Honey Gold Mango and Barracuda Mango No.4 had average of 0.40±0.22 and 0.44±0.22 mg/kg, respectively, not exceeding the soil standard of Land Development Department (≤37 mg /kg). Cadmium contaminated Honey Gold Mango and Barracuda Mango No.4 were found to be 0.31±0.07 and 0.16±0.06 mg/kg, respectively, which cd content of Honey Gold Mango were exceeded standard set by FAO/WHO (≤0.30 mg/kg). The bioaccumulation factor of Barracuda Mango No. 4 was averaged of 0.45±0.45, while Honey Gold Mango was averaged of 1.19 ± 1.04. Honey Gold Mango is possible to determine the plant belonging to Cd-hyperaccumulators (BAF>1), therefore agro-chemicals containing cadmium should be aware of impending use.