Extractability of Cu in Alkaline Biosolids-Amended Soils as Influenced by γ-Irradiation

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Extractability of Cu in Alkaline Biosolids-Amended Soils as Influenced by γ-Irradiation

机译：γ辐照对碱性生物固体改良土壤中Cu的萃取性

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An incubation experiment was conducted to investigate the microbial biomass associated Cu in fourcontrasting soils to which an alkaline stabilised sewage sludge cake was applied. The organisms of sludge-amended and control soils were killed using ry-irradiation technique, and the aqueous and acid-extractable Cuconcentrations were determined. Addition of the sludge product increased significantly the concentration ofboth the aqueous and dilute HOAc-extractable Cu in all the irradiated soils compared to the non-sterilisedsludge/soil mixtures, but the increase was more pronounced in the dilute acid-extractable Cu, indicating thatthe Cu rendered extractable in water and dilute acetic acid by 7-irradiation existed in the both soil liquidand solid phases. The additional increase in extractable Cu following the biocidal treatment is likely to bedue to release of Cu from the same fraction of soil microbial biomass.

机译：An incubation experiment was conducted to investigate the microbial biomass associated Cu in four contrasting soils to which an alkaline stabilised sewage sludge cake was applied. The organisms of sludgeamended and control soils were killed using γ-irradiation technique, and the aqueous and acid-extractable Cu concentrations were determined. Addition of the sludge product increased significantly the concentration of both the aqueous and dilute HOAc-extractable Cu in all the irradiated soils compared to the non-sterilised sludge/soil mixtures, but the increase was more pronounced in the dilute acid-extractable Cu, indicating that the Cu rendered extractable in water and dilute acetic acid by γ-irradiation existed in the both soil liquid and solid phases. The additional increase in extractable Cu following the biocidal treatment is likely to be due to release of Cu from the same fraction of soil microbial biomass.

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《土壤圈（英文版）》 |2002年第2期|139-144|共6页
作者

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作者单位

Institute of Soil Science the Chinese Academy of Sciences Nanjing 210008 China;

Department of Agricultural and Environmental Science The Queen's University of Belfast Newforge Lane Belfast BT9 5PX (UK);

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收录信息中国科学引文数据库(CSCD);
原文格式 PDF
正文语种 chi
中图分类土壤学;
关键词
acetic acid extract; aqueous extract; γ-irradiation; soil biomass copper;

机译：乙酸提取物;水提取物;γ射线;土壤生物量铜;

Extractability of Cu in Alkaline Biosolids-Amended Soils as Influenced by γ-Irradiation

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