摘要
用微量热法研究了４种重金属离子对丝状真菌（黑根霉菌）生长抑制的热功率输出曲线，得到了它在不同浓度重金属离子作用下的生长速率常数ｋ、抑制率Ｉ、半抑制浓度ＩＣ５０等参数，其抑制顺序为：Ｃｄ２＋＞Ｈｇ２＋＞Ｐｂ２＋＞Ｃｕ２＋．
By using microcalorimetric method, the growth thermogenetic curves of Rhizopus nigricans inhibited by four kinds of heavy metal ions are determined, parameters such as growth rate constants k, inhibitory ratio I, and half inhibitory concentration IC 50 etc.are obtained. The experimental results show that four kinds of heavy metal ions can inhibit Rhizopus nigricans growth obviously, low concentration of Cu 2+ has promoting action. The inhibitory sequence is Cd 2+ > Hg 2+ > Pb 2+ > Cu 2+ , half inhibitory concentration of them are Cd 2+ 0.8μg\5ml -1 , Hg 2+ 1.7μg\5ml -1 , Pb 2+ 48.0μg\5ml -1 , Cu 2+ 110.0μg\5ml -1 .
出处
《武汉水利电力大学学报》
CSCD
1997年第5期108-110,共3页
Engineering Journal of Wuhan University
基金
国家自然科学基金
关键词
微量热法
重金属离子
生物效应
热化学
真菌生长
microcalorimetric method
heavy metal ions
Rhizopus nigricans
thermochemistry
