Abstract
Pot experiment was conducted with the cutting seedlings of Ilex kudingcha C. J. Tseng. By adding lead, copper solution and self-exist zinc in soil, we conducted the research for the phytoavailability of heavy metal in the different soil situation. The characterization methods of the phytoavailability were investigated. Results show that lead, copper and zinc are the strong absorption elements from BAC (Biological Absorption Coefficient) averages of 13 groups experiment. The order of BAC averages is lead > copper > zinc. 0.05mol/L EDTA-2Na can be used as the extracting agent of lead or copper, 0.1mol/L HCl can be used as the extracting agent of zinc. They can be used for the characterization methods about the phytoavailability of lead, copper, zinc in soil by the single extraction method. 0.1mol/L HC1 is adopted to extract soil, and weighted ion impulse of the lead, copper, zinc in the extraction fluid is calculated, which can well simultaneously characterize the phytoavailability of heavy metal lead, copper, zinc in kudingcha soil.
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