摘要
进行了菌藻生物活体、死体、原油、有机质、有机淤泥和三种粘土矿物富金作用的对比实验，并研究了不同环境不同类型的菌藻生物在不同环境下的富金能力的差异，探讨了生物富金机理。结果表明活体菌藻生物富金能力比其他实验样品的强。与海水和淡水条件相比，温泉蓝细菌富金能力强；与常温条件相比，热水条件下的温泉蓝细菌富金能力强。在生物生活的氧化环境，生物对金的富集主要表现为与生理活动有关的吸收作用，并且推测在细胞内对金起着运载和蓄集作用的生物配体主要是含硫有机化合物。
The absorbing gold experiments of living bacteria and algae, dead ones, crude oil,organic matter, organic silt and three kinds of clay minerals are conducted. The difference of gold enriching ability of bacteria and algae in different environment is studied, and the mechanism of gold enrichment of organisms is discussed. The results show that the ability of enriching gold of living bacteria and algae is stronger than other samples and the cyanobacteria in hot spring is stronger than in others environments. In the oxidized environment of organisms living, the gold enrichment by organisms is expressed mainly as absorbtion, and the sulfure-bearing organic compound is the most important organism ligand playing a role in gold migration and concentration in cells.
出处
《地球化学》
CAS
CSCD
北大核心
1998年第6期559-565,共7页
Geochimica
基金
国家自然科学青年基金!49503048
