Sayen Stéphanie, Mallet Jérémy, Guillon Emmanuel
Institut de Chimie Moléculaire de Reims (ICMR, UMR CNRS 6229), Groupe Chimie de Coordination, Université de Reims Champagne-Ardenne, BP 1039, 51687 Reims Cedex 2, France.
J Colloid Interface Sci. 2009 Mar 1;331(1):47-54. doi: 10.1016/j.jcis.2008.11.049. Epub 2008 Nov 27.
The uptake of copper by a vineyard soil in fixed bed column systems was investigated in order to study the influence of the aging time on the soil retention capacity. The application of copper by means of several additions, as in field conditions, increases the retention capacity of the soil relative to a single one application of the metal. The aging effect is responsible for this phenomenon, since its increase enhances the amount of adsorbed copper. Moreover, aging the soil reduces the amount of available copper during a Ca(NO(3))(2) leaching of the soil columns which suggests a redistribution of a weakly-bound copper fraction to a more strongly-bound fraction. Scanning electron microscopy combined with energy dispersive X-ray spectroscopy (SEM-EDS) indicates that copper is heterogeneously distributed within the soil sample. Nevertheless, copper is preferentially associated with fractions containing Fe and Al atoms.
为了研究老化时间对葡萄园土壤固定床柱系统中铜吸收能力的影响，对铜的吸收情况进行了调查。在田间条件下，通过多次添加铜的方式，相对于单次添加金属，土壤的保留能力有所提高。老化效应是造成这种现象的原因，因为老化时间的增加会提高土壤对铜的吸附量。此外，对土壤柱进行Ca(NO(3))(2)淋洗时，土壤老化会减少有效铜的含量，这表明弱结合态铜部分重新分布到了强结合态部分。扫描电子显微镜结合能量色散X射线光谱法（SEM-EDS）表明，铜在土壤样品中分布不均匀。然而，铜优先与含有铁和铝原子的部分结合。
