铅锑厂区土壤重金属垂直迁移数学模型参数研究

Q4 Agricultural and Biological Sciences
A. S. Frid, T. I. Borisochkina
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引用次数: 1

摘要

分析了中国南方广西铅锑植物影响区土壤剖面重金属分布数据(Yuan et al.,2017)。土壤为草皮状钙质,富含腐殖质。估计了在土壤复合污染(仅土壤空气污染和与污水结合)区域内迁移的扩散和对流扩散模型的多年平均值和深度(“表观”)参数。Zn和Cd的扩散参数最大(n∙10–7сm2/秒),Pb和Sb的扩散参数最小(n∙。当土壤被废水淹没时,注意到锌和锑迁移的可靠对流成分。同时,Zn浓度的峰值向40–60 cm的深度移动。在这些条件下,迁移迁移迁移率与土壤对元素的吸附量之间没有明显的负相关性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
PARAMETERS OF MATHEMATICAL MODELS FOR VERTICAL MIGRATION OF HEAVY METALS IN SOILS IN THE AREA OF LEAD AND ANTIMONY PLANT
The data on distribution of heavy metals in the soil profile (Yuan et al., 2017) of the province Guangxi in southern China in the zone influenced by lead and antimony plant were analyzed. The soil is sod-calcareous and rich in humus. The averaged over the years and depth (“apparent”) parameters of diffusion and convective-diffusion models of migration in the area of combined soil pollution (only soil aerogenic pollution and in combination with the sewage waters) are estimated. The largest values of the diffusion parameters were obtained for Zn and Cd (n∙10–7 сm2/sec), the smallest values were obtained for Pb and Sb (n∙10–8 сm2/sec). When soil was flooded by waste waters, a reliable convective component of migration for Zn and Sb was noted. At the same time the peak of Zn concentration moved to the depth of 40–60 cm. Under these conditions there was no clear inverse correlation between the migration mobility and the amount of sorption of elements by the soil.
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来源期刊
CiteScore
0.90
自引率
0.00%
发文量
15
审稿时长
8 weeks
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