Abstract: The distribution and content of ²³⁸U, ²²⁶Ra, ²¹⁰Pb and ²¹⁰Po in roots, stems and leaves of Brassica juncea, Brassica pekinensis and Amaranthus tricolor grown in the uranium contaminated soil of Guangdong district were analyzed. The results showed that the roots were the main enrichment part. The transfer coefficients of the three vegetables were all at the level of 10^-3-10^-2. The transfer coefficients of ²³⁸U and ²²⁶Ra of Brassica juncea were correlated while the transfer coefficients of ²¹⁰Pb and ²¹⁰Po of Brassica pekinensis were also correlated. According to the preliminary estimation of committed equivalent dose for public ingestion of 1 kg those vegetables, the dose of ²³⁸U ranged from 0.001 to 0.105 μSv, ²²⁶Ra ranged from 0.004 to 0.576 μSv, ²¹⁰Pb ranged from 0.019 to 0.646 μSv, ²¹⁰Pb ranged from 0.019 to 0.646 μSv.

Key words: vegetables, ²³⁸U, ²²⁶Ra, ²¹⁰Pb, ²¹⁰Po, transfer factor, committed equivalent dose