Atomic force microscope was employed to study the surface structure of purple membrane (PM) using contact mode in liquid. The surface structures of native PM and PM partly dissolved by detergent CHAPS were com- pared....Atomic force microscope was employed to study the surface structure of purple membrane (PM) using contact mode in liquid. The surface structures of native PM and PM partly dissolved by detergent CHAPS were com- pared. Results show that 6 mmol/L CHAPS could induce some cracks and holes in PM. While Bateriorhodopsin (BR) was still presented as trimers in the two-dimensional hex- agonal structure. We assume that it was caused by the inter- action between CHAPS micellar and PM. Both absorption spectra and flash photolysis kinetic spectra indicated that BR抯 biochemical functions have been changed.展开更多
利用废弃蛋壳制备碳羟基磷灰石,并利用其吸附废水中的Cd2+.考察了Cd2+初始浓度、pH值、吸附时间、吸附剂用量以及温度等因素对吸附效果的影响,结果表明:当废水中Cd2+初始浓度为30 mg/L、pH=7、吸附时间35 m in、温度35℃时,碳羟基磷灰石...利用废弃蛋壳制备碳羟基磷灰石,并利用其吸附废水中的Cd2+.考察了Cd2+初始浓度、pH值、吸附时间、吸附剂用量以及温度等因素对吸附效果的影响,结果表明:当废水中Cd2+初始浓度为30 mg/L、pH=7、吸附时间35 m in、温度35℃时,碳羟基磷灰石对Cd2+去除率高达99.9%.吸附实验还表明该吸附符合Freundlich方程.展开更多
基金supported by the State Key Basic Research and Development Plan Project(Grant No.199801012).
文摘Atomic force microscope was employed to study the surface structure of purple membrane (PM) using contact mode in liquid. The surface structures of native PM and PM partly dissolved by detergent CHAPS were com- pared. Results show that 6 mmol/L CHAPS could induce some cracks and holes in PM. While Bateriorhodopsin (BR) was still presented as trimers in the two-dimensional hex- agonal structure. We assume that it was caused by the inter- action between CHAPS micellar and PM. Both absorption spectra and flash photolysis kinetic spectra indicated that BR抯 biochemical functions have been changed.
文摘利用废弃蛋壳制备碳羟基磷灰石,并利用其吸附废水中的Cd2+.考察了Cd2+初始浓度、pH值、吸附时间、吸附剂用量以及温度等因素对吸附效果的影响,结果表明:当废水中Cd2+初始浓度为30 mg/L、pH=7、吸附时间35 m in、温度35℃时,碳羟基磷灰石对Cd2+去除率高达99.9%.吸附实验还表明该吸附符合Freundlich方程.
