Studies on accumulation capability of camellia oleifera to five heavy metals
The content of five heavy metals (Cr, Cd, Ph, As, and Hg) in roots, stems, leaves, seeds of Camellia oleifera and the corresponding soils collected from Shaoyang County were measured by atomic absorption and atomic fluorescence spectrometry.The results show that the average content of five elements in soil from high to low was: Cr＞Pb＞As＞Cd＞Hg, having values of 41.209 4, 23.002 0, 19.380 4, 1.297 2 and 0.365 8 mg/kg, respectively;the order of average content of five heavy metal elements in Camellia organs from high to low was as follows: stem＞leaf ＞root＞seed kernel, their average contents were 0.272 8, 0.230 1, 0.200 3, and 0.114 mg/kg respectively; and the order of average accumulation index of the elements in different organs from high to low was as follows: Pb＞Cr＞Cd＞Hg＞As, their average accumulation indexes were 0.536, 0.246 8, 0.190 2, 0.036 4, and 0.011 9 respectively.The accumulation index of Pb in root, stem, and leaf was the highest among the five heavy metals, reading 0.523 7,0.815 5, and 0.721 9 mg/kg respectively.The accumulation index of Cd in seed kernel was the highest,being 0.290 8 mg/kg.The accumulation index of Hg in different organs decreases by the same pattern of heavy metals contents; As has the highest accumulation index in the leaf, followed by seed kernel, root and stem; the highest accumulation index of Cr was in the stem, followed by the root, seed kernel and leaf.
Camellia oleiferaheavy metal pollutionenrichment coefficientco-relationship
NETL
NSTL
万方数据
维普
