南京大学学报(自然科学版) ›› 2013, Vol. 49 ›› Issue (6): 673.
陈笑夜,陆现彩**,刘 欢,李 娟,朱翔宇
Chen Xiao-Ye,Lu Xian-Cai,Liu Huan,Li Juan,Zhu Xiang-Yu
摘要: 菱锰矿是沉积锰矿的主要矿石矿物类型,有研究表明生物作用有助于菱锰矿的形成和沉积。本文从栖霞山石炭系含锰沉积风化产物中分离获得两株芽孢杆菌属细菌,在使用PCR技术鉴定菌种的基础上,通过模拟实验研究了该菌在含Mn2+溶液中促进锰矿物沉淀的现象。利用X射线衍射分析、扫描电子显微镜和X射线吸收精细光谱等分析方法,研究了细菌参与下形成的富锰沉淀的矿物物相组成。实验结果表明,细菌显著促进了菱锰矿的沉淀,在此基础上进一步探讨了细菌在锰矿化过程中的贡献。本项实验丰富了富锰沉积的微生物成因研究。
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