摘要
烟草头孢霉F_2在含200mg/L HgCl_2的液体培养基中生长16h,汞量减少了90％,此后菌量迅速增加,试验了营养条件、HgCl_2浓度、前培养条件、pH及温度等对F_2菌汞解毒作用的影响,初步研究了解毒作用机理.结果表明,该菌能将HgCl_2还原成为元素汞,据分析,约12％的汞挥发到气相中,7％被菌体吸收,其余以元素汞颗粒的形态沉积在培养液底部.
After 16 hours growing of a mercury-resistant fungus, Cephalosporium ta-bacinum, in a liquid medium containing 200mg/L HgCl2, the concentration of HgCl2 reduced 90% and a rapid growth of the fungus was followed. The effects of nutrients, concentration of Hg, precultivation condition, pH, and temperature on the detoxification and the mechanism of the detoxification were investigated. The results indicated that the strain is able to reduce HgCl2 to elemental mercury and 12% of Hg was evaporated, 7% of Hg was uptaken by the cells and the rest was precipitated into the bottom as elemental mercury granules.
出处
《环境科学学报》
CAS
CSSCI
CSCD
北大核心
1992年第3期275-281,共7页
Acta Scientiae Circumstantiae
基金
国家自然科学基金资助项目
关键词
烟草头孢霉
氯化汞
解毒
Cephalosporium tabacinum F_2, detoxification, reduction, element mercury.
