Investigation of Zn2+-microbe interaction in a wheat surface soil by various methods
The influence of Zn2+ on microbe activity in a wheat surface soil was investigated, by infusing different concentrations of ZnS powder (1600, 6400, 19200, 38400 and 60000 μg/g) into a soil solution. Powertime curves of the growth metabolism of soil microorganisms and the effect of different Zn2+ concentrations on growth were studied using the TAM Ⅲ multi-channel microcalorimetric system, isothermal mode, at 28℃. In addition, a seres of experiments were performed to follow changes of soil microbial activity, such as biochemical oxygen demand (BOD) and microscopic observation of live cultures, in the soil solution. By combining these methods and experiments, the results reveal that there are three kinds of microbes (bacterium, 1st fungus, 2nd fungus) living in this soil solution. The results suggest that at different concentrations, zinc will play different roles in soil microbial growth, metabolism and reproduction. At lower concentrations (e.g., 1600, 6400, 19200,and 38400 μg/g), soil microbes still could survive and have some growth, metabolism, and respiration. However when the concentration of Zinc (Zn2+) contamination was higher than 6000 μg/g, the soil microbial growth and metabolism was inhibited completely.
Y.Zhou G.Zaray J.Yao Chaoqian Xu F.Wang Y.X.Wang H.L.Chen L.Tian A.Djak T.Maskow
School of Environmental Studies & Key Laboratory of Biogeology and Environmental Geology of Chinese Department of Environmental Chemistry and Chemical Technology, Faculty of Science, Eotvos Lorand Uni UFZ Centrefor Environmental Research Leipzig, Leipzig, Germany
国际会议
第十二届水-岩相互作用国际研讨会(P0roceedings of the 12th International Symposium on Water-Rock Interaction)
昆明
英文
929-932
2007-07-31（万方平台首次上网日期，不代表论文的发表时间）