Department of Biotechnology and Bioengineering, CINVESTAV- IPN, San Pedro Zacatenco C.P. México, D.F., México.
J Environ Sci Health B. 2013;48(3):226-36. doi: 10.1080/03601234.2013.730345.
The effects of mine tailings and three organic amendments (compost, bokashi and vermicompost) on the mobility factor for Pb and Zn and on the potential C and N mineralization in semi-arid agricultural and rangeland soils were examined. During the experiment, soil samples were analyzed periodically for CO(2)-C evolution, inorganic N, dehydrogenase activity and percent Pb and Zn mobility during 169 d of incubation. The dehydrogenase activity and CO(2)-C evolved were strongly inhibited by mine tailings mixed with organic compost in both agricultural and rangeland soils (37 to 43 %), followed by N mineralization in treatments with mine tailings plus bokashi or compost (13 to 26.5 %) at 169 d incubation. The highest % mobility of Pb and Zn were observed in soils amended with mine tailings alone, while the lowest was observed in agricultural soils treated with vermicompost plus mine tailings. The CO(2)-C evolved was fitted to first order E, while the cumulative N mineralization was fitted to the linearized power function. Mine tailings were found to influence the potential C and N mineralization rate constants in both soils. The models for C and N mineralization could be used to evaluate the effects of mine tailings, which include intrinsic parameters in the soil.
研究了矿山尾矿和三种有机改良剂（堆肥、发酵堆肥和蚯蚓粪）对 Pb 和 Zn 迁移因子以及半干旱农业和牧场土壤中潜在 C 和 N 矿化的影响。在实验过程中，定期分析土壤样品，以在 169 天的培养期间测量 CO(2)-C 释放、无机 N、脱氢酶活性以及 Pb 和 Zn 的迁移百分比。在农业和牧场土壤中，与有机堆肥混合的矿山尾矿强烈抑制了脱氢酶活性和 CO(2)-C 的释放（37%至 43%），随后在添加矿山尾矿和发酵堆肥或堆肥的处理中，N 矿化（13%至 26.5%）在 169 天的培养期间。在单独添加矿山尾矿的土壤中观察到 Pb 和 Zn 的最大迁移百分比，而在添加蚯蚓粪和矿山尾矿的农业土壤中观察到最低的迁移百分比。CO(2)-C 的释放符合一级 E 模型，而累积 N 矿化符合线性幂函数。矿山尾矿被发现影响两种土壤中潜在的 C 和 N 矿化率常数。C 和 N 矿化的模型可用于评估矿山尾矿的影响，其中包括土壤中的内在参数。
