Copper bioavailability in manure-amended soil as determined by whole-cell bacterial biosensors complemented by chemical analysis

摘要：

We used whole-cell bacterial biosensor technology linked to chemical analysis of Cu species to study Cu bioavaitability in manureamended soil. Manure amendment led to an immediate increase in bioavailability that could be explained in part by increased Cu solubility and remarkably in part by an increased availability of Cu species in solution. The effect of the manure amendments dedined during 3-6 weeks. Our results clearly show that Cu species other than the free Cu<2+> ion contributed to the increased Cu bioavailability following manure amendment and suggest that labile, manure derived, low-molecular-weight organics formed bioavailable Cu- organics complexes.

关键词： Bioavailability biosensor complexes copper manure

作者: K. K. Brandt O. Nybroe P. E. Holm

作者单位: Department of Ecology Department of Natural Sciences The Royal Veterinary and Agricultural University, Thorvaldsensvej 40,

会议类型: 国际会议

会议名称: 第九届痕量元素生物地球化学国际会议(9th International Conference on the Biogeochemistry of Trace Elements)

会议地点: 北京

会议语种:英文

页码: 514-515

在线出版日期: 2007-07-15（万方平台首次上网日期，不代表论文的发表时间）