摘要
通过纯培养和模拟实验研究一株铜绿假单胞菌JM1对磷酸钙的溶解特征及其对底泥中Pb的固定化作用.结果表明:菌株JM1对磷酸钙和磷酸铝均具有溶解作用,96h内释放的溶解性正磷酸盐的质量浓度分别为240.63,92.73mg/L,培养液pH值分别下降至4.64,5.12,菌株JM1还可以利用卵磷脂进行生长但不释放磷酸根离子;菌株JM1使灭菌底泥与不灭菌底泥中固定化Pb的质量比分别增加至14.02,11.83mg/kg,即菌株JM1对底泥中的Pb具有较强的固定能力.
We studied the characteristics of phosphate solubilization of Pseudomonas aeruginosa JM1 and its immobilization of Pb in sediment via pure culture and simulated experiment. The results show thai strain JM1 is capable of dissolving Ca3 （PO4）2 and A1PO4 which leads to the mass concentrations of dissolved PO43- are 240.63,92.73 mg/L, and pH in culture solution decreases to 4.64, 5.12, respectively. Meanwhile, strain JM1 can grow on lecithin but not the release phosphations. Strain JM1 makes the mass ratio of immobilized Pb in the sterilized and without sterilized sediment increased to 14.02, 11.83 mg/kg, which show that strain JM1 has strong ability to immobilize Pb in the sediment.
出处
《吉林大学学报（理学版）》
CAS
CSCD
北大核心
2016年第6期1462-1468,共7页
Journal of Jilin University:Science Edition
基金
国家自然科学基金(批准号:51109089)
吉林省科技发展计划项目(批准号:20130206031NY
20160204025SF)
关键词
铜绿假单胞菌
溶磷特性
底泥
Pb的固定化作用
Pseudomonas aeruginosa
characteristics of phosphate solubilization
sediment
immobilization of Pb
