摘要
对颤藻在含金培养液中生长情况的研究,发现10^(-6)的金对颤藻是安全浓度,当金浓度增至2×10^(-6)时,颤藻被明显致毒,生长繁殖受到抑制。颤藻在10×10^(-9)、100×10^(-9)的含金培养液中正常生长时,对金具有很强富集能力。在含金10×10^(-9)的培养液中,随着藻体的生长繁殖,富集系数逐渐增大,最高可达17614;在含金100×10^(-9)的培养液中,随着藻体的生长繁殖,前4天富集系数逐渐增大,以后则有所减少,藻粉中金的含量达91.2×10^(-6)。试验结果不仅为含金水体的生物净化和金的生物回收提供了可能,而且为藻类植物参与成矿作用提供了重要依据。
The toxic concentration of gold for oscillatoria is studied in thispaper. A non-toxic concentration of 10^(-6) is presented to oscillatoria.But when the concentration of gold inereases to 2×10^(-?), the algal growthwill inhibite completely. The alga absorbed strongly gold when it grow normally at theconcentration of 10×10^(-9) and 100×10^(-9) in the medium. The highest absorbfactor was 17614 in the medium of 10×10^(-9) gold concentration. The algaabsorb factor increased gradually in the first four days and decreased lightlyin later days when it grew at the concentration of 100×10^(-9) in the medium.The highest gold content in alga powder iss 91.2×10^(-?).
基金
国家自然科学基金会
中国科学院兰州气体地球化学开放实验室资助项目
关键词
金
颤藻
浓度
金矿床
毒性
gold
Oscillatoria/toxic concentration
absorb factor
