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Pot experiments were conducted to investigate the effects of three different chelating agents(EDTA, citric acid, NTA) that intensify the absorption and accumulation of Cu, Zn in vermicompost for Euchlaena Mexicana Schrad. The results indicated that chelating agents addition could inhibit the growth of Euchlaena Mexicana Schrad, and the inhibition on the roots is greater than the shoots. At the same...
Heavy metals, a kind of persistent toxic substance(PTS), were taken for the study in this paper. Dust samples we recollected in Shanghai urban parks. The concentrations of mean metals in dust samples were in the order Zn >; Pb >; Cu, where Pb shows the greatest coefficient of variation. Human health risk was evaluated in Shanghai urban parks. The pathway of direct ingestion is dominating for...
Contents of heavy metals in six vegetable species and the corresponding rhizospheric soils around a lead-zinc mining and smelting plant in Nanjing, China were investigated to assess the possible risks of heavy metal posed to human health through food chain and to discuss the relationships of heavy metals contents in vegetables and the corresponding rhizospheric soils. Compared to national sanitation...
Given a description of city environment of Zhuzhou from the geochemical and geological environment, the author carried out further research on city ecological geochemistry and discussed the pollution of soil heavy metal through correlations analysis, R-cluster analysis and classified statistic of parent rock.
Using environmental scanning electron microscopy and X-ray electron probe microanalysis, the Cd relative content was studied in cortex, aleuronic layer, scutellum, plumule, hypocotyl, radicle and endosperm in 20 genotypes of wheat grains. The results showed that the Cd content in different part of 20 genotypes of wheat grains changed as aleuronic layer>hypocotyl>radicle>scutellum>plumule>cortex>endosperm,...
Pb uptake, accumulation and tolerance of ten cultivars (S1, S2, S3, S4, S5, S6, S7, S8, S9 and S10) of Cruciferae were investigated with water culture. Three strategies of Pb uptake and accumulation were found in the ten cultivars: root exclusion strategy, accumulating less Pb in both root and shoot (<500 mug/g DW) (S4); shoot exclusion strategy, accumulating large amounts of Pb in root (>1...
The extensive clayization of Dexing copper mine is responsible for water and soil pollutions because of the oxidation of sulfide minerals. During the clayization, harmful elements such as As, S, Sb and Pb could be effectively released into the clay and water. Using the abundant spectral information of short wave infrared (SWIR), combining with the spectral absorbed index, SAM (Spectrum Angle Mapper)...
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