Studies on loading capacity of agricultural soils for heavy metals and its applications in China
Identifieur interne : 001047 ( Main/Exploration ); précédent : 001046; suivant : 001048Studies on loading capacity of agricultural soils for heavy metals and its applications in China
Auteurs : H. M. Chen [République populaire de Chine] ; C. R. Zheng [République populaire de Chine] ; C. Tu [République populaire de Chine] ; D. M. Zhou [République populaire de Chine]Source :
- Applied Geochemistry [ 0883-2927 ] ; 2001.
Abstract
The results from past pollution control practices have shown that environmental quality can not be ensured by simply controlling the concentration of pollutants discharged into it. Instead, it is necessary to control the actual amount of the pollutants formed in the environment. Therefore, the loading capacity of agricultural soil for heavy metals (LCASHM) was introduced. LCASHM is defined as the maximum permitted amount of heavy metals in agricultural soil which preserves the benign cycle of materials in the pedosphere and limits the adverse effects of heavy metals on the biosphere, hydrosphere, atmosphere and lithosphere. LCASHM was found to be affected by many factors such as soil characteristics, indicator organisms, forms and history of pollutants, and a combination of other pollution and environmental factors. The LCASHM value is not fixed but instead encompasses a range. The acceptable LCASHM range in China is 23–37 g/ha/a for Cd, 6750–10,125 g/ha/a for Pb, 687–2812 g/ha/a for Cu and 450–675 g/ha/a for As, respectively. On-going research involving LCASHM should focus on the long-term and multiple-factor effects, and the mechanisms of pollutant reactions in soils. In addition, the practical application of LCASHM should also be stressed.
Url:
DOI: 10.1016/S0883-2927(01)00041-5
Affiliations:
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Instead, it is necessary to control the actual amount of the pollutants formed in the environment. Therefore, the loading capacity of agricultural soil for heavy metals (LCASHM) was introduced. LCASHM is defined as the maximum permitted amount of heavy metals in agricultural soil which preserves the benign cycle of materials in the pedosphere and limits the adverse effects of heavy metals on the biosphere, hydrosphere, atmosphere and lithosphere. LCASHM was found to be affected by many factors such as soil characteristics, indicator organisms, forms and history of pollutants, and a combination of other pollution and environmental factors. The LCASHM value is not fixed but instead encompasses a range. The acceptable LCASHM range in China is 23–37 g/ha/a for Cd, 6750–10,125 g/ha/a for Pb, 687–2812 g/ha/a for Cu and 450–675 g/ha/a for As, respectively. On-going research involving LCASHM should focus on the long-term and multiple-factor effects, and the mechanisms of pollutant reactions in soils. In addition, the practical application of LCASHM should also be stressed.</div></front></TEI><affiliations><list><country><li>République populaire de Chine</li></country></list><tree><country name="République populaire de Chine"><noRegion><name sortKey="Chen, H M" sort="Chen, H M" uniqKey="Chen H" first="H. M." last="Chen">H. M. Chen</name></noRegion><name sortKey="Chen, H M" sort="Chen, H M" uniqKey="Chen H" first="H. M." last="Chen">H. M. Chen</name><name sortKey="Tu, C" sort="Tu, C" uniqKey="Tu C" first="C." last="Tu">C. Tu</name><name sortKey="Zheng, C R" sort="Zheng, C R" uniqKey="Zheng C" first="C. R." last="Zheng">C. R. Zheng</name><name sortKey="Zhou, D M" sort="Zhou, D M" uniqKey="Zhou D" first="D. M." last="Zhou">D. M. Zhou</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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