基于小麦产品质量的土壤铅修复基准

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Abstract

This paper contributes to the development of critical levels of heavy metal Pb in soil at which agriculture production of food is safe.In this study,a remediation criterion for Pb in soil is derived from the relationship from the Pb concentration and biomass of wheat between the total and available Pb in soil.Results showed that concentration of Pb in wheat increased with the increase of Pb application.With the biomass dropped by 10% set as the critical point for soil Pb pollution to be toxic to wheat in brown soil,the critical value is 292 mg·kg^-1 for total Pb,7mg·kg^-1 for available Pb.Given the food quality standard and a maximum acceptable probability of exceeding this standard,the Pb concentration in brown soil is 170 mg·kg^-1 for total Pb,4 mg·kg^-1 for available Pb.

Key words： Pb Soil Wheat Triticum aestivum.L Food safety Remediation criterion

Received: 25 December 2006

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	Articles by authors
	CHAO Lei
	ZHOU Qi-xing
	CHEN Su
	CUI Shuang

Cite this article:

CHAO Lei,ZHOU Qi-xing,CHEN Su, et al. Probabilistic remediation criterions of contaminated soil for Pb derived from quality standards in wheat[J]. , 2006, 25(6): 554-557.

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http://www.ecolsci.com/EN/ OR http://www.ecolsci.com/EN/Y2006/V25/I6/554

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