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篇目详细内容 |
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【篇名】 |
Threshold criteria for heavy metals in the soils of hazard-free dry fruit production regions of China |
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【刊名】 |
Frontiers of Agriculture in China |
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【刊名缩写】 |
Front. Agric. China |
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【ISSN】 |
1673-7334 |
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【EISSN】 |
1673-744X |
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【DOI】 |
10.1007/s11703-007-0033-8 |
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【出版社】 |
Higher Education Press and Springer-Verlag |
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【出版年】 |
2007 |
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【卷期】 |
1
卷2期 |
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【页码】 |
193-196
页,共
4
页 |
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【作者】 |
ZHANG Jianguang;
LIU Yufang;
GUO Suping;
LI Baoguo;
ZHOU Junyi;
WANG Wenjiang;
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【关键词】 |
threshold criteria; hazard-free; dry fruit; soil; heavy metal |
【摘要】 |
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Determination of proper threshold criteria for heavy metals in soils is an important basis for hazard-free dry fruit production in China. Based on the detection of heavy metal contents in soils in this study, it is initially concluded that the soils for dry fruit production in China are suitable for hazard-free growing. Moreover, the soil safety qualification for dry fruit production is much better than that in some developed countries or regions, which might help our production have a competitive advantage on the international market. However, soil Cr contents in the country are slightly higher, so that it is necessary to take steps to control any contamination during the whole chain of production. The following threshold criteria for heavy metals in soils is suggested according to physical, ecological and economical considerations: Hg 0.15 mg/kg; As 20 mg/kg; Pb 50 mg/kg; Cd 0.30 mg/kg and Gr 200 mg/kg. |
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