Probanza A, Gutiérrez Mañero F J, Ramos B, Acero N, Lucas J A
Unidad de Biología Vegetal Universidad de San Pablo CEU, Boadilla del Monte, Madrid, España.
Microbiologia. 1996 Sep;12(3):417-24.
The toxicity of three heavy metals, Cd, Zn and Cu, has been tested in a Mediterranean soil. The soil was incubated (108h) with mixed solutions of those metals before evaluating denitrification and CO2 production, both by gas chromatography. These activities were used as biological indicators of heavy metal toxicity, and compared to non-treated control soil samples. Statistical analyses showed no significant differences in CO2 production between treated and non-treated control soils. The lowest levels of respiration were observed in soils treated with the largest amounts of Zn and Cd. Denitrification increased significantly in soils treated with solutions containing 100 micrograms/ml of Cu and 1000 micrograms/ml of Cd or Zn.
已在地中海土壤中测试了三种重金属镉（Cd）、锌（Zn）和铜（Cu）的毒性。在通过气相色谱法评估反硝化作用和二氧化碳产生之前，将土壤与这些金属的混合溶液进行了108小时的培养。这些活性被用作重金属毒性的生物学指标，并与未处理的对照土壤样品进行比较。统计分析表明，处理过的土壤和未处理的对照土壤在二氧化碳产生方面没有显著差异。在用最大量的锌和镉处理的土壤中观察到最低的呼吸水平。在用含有100微克/毫升铜以及1000微克/毫升镉或锌的溶液处理的土壤中，反硝化作用显著增加。
