Metal contamination in leaves and fruits of holm-oak (Quercus rotundifolia Lam.) trees growing in a pyrites mining area at Aljustrel, Portugal

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FernandoS. Henriques
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K.V.S.S. Krishna ◽  
Saikat Dutta ◽  
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Jean-François Ponge ◽  
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Edith Bury ◽  
Ali Boumezzough

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2012 ◽  
Vol 518-523 ◽  
pp. 444-452 ◽  
Author(s):  
Jing Wang ◽  
Wei Xuan Fang

According to the primary study on the As contamination in soil and crops including potato and pea in tin tailings in Gejiu area, Yunnan Province, it has been found that concentrations of As in rhizosphere far exceed Chinese National Grade Ⅲ standard of soil environmental quality of China (GB 15618-1995). It also has been found that the Ferns were living in the tin tailings suffered from the contamination of heavy metals. Compared with the limit of national criteria for food sanitation in China, the concentrations of As in edible parts of ferns are 90 times. Therefore, the remediation of soil based on geochemical distribution characteristics of heavy metal in the tailings is demanded. And avoiding crops-planting in the tailings to reduce the diffusion of heavy metal contamination in food chain of mining area is necessary.


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