The extraction rate of icariin for one time can reach 95.2 % by choosing the Tween 80 concentration at 9 %,the (NH 4) 2SO 4 concentration at 1.667mol/L,the extraction acidity at pH 4.20. 94.2 % of icariin for one time can be counter extracted from the Tween 80 solid phase by fixing the (NH 4) 2SO 4 concentration at 2.121 mol/L.
选择Tween 80浓度为 9% ,(NH4) 2 SO4浓度为 1.667mol/ L ,萃取 p H 4 .2 0 ,淫羊藿甙的一次萃取率可达 95 .2 % . 选择 (NH4) 2 SO4浓度为 2 .12 1mol/ L ,反萃 p H 10 .30 ,经一次反萃 ,可使 94 .2 %的淫羊藿甙与 Tween80分离 .
The mobile phase was a mixture of methanol and water(11,V/V) at a flow rate of 0.2 ml·min~(-1). The influence of CapEx voltage,pH of sample solution,temperature of a counter flow of neutral,heated dying gas(T) and ionization mode on the mass spectra of BTTN and NG was studied.
Separation experiments were performed using a Falcon SB40 concentratorto recover metals from-0.074 mm printed circuit boards. The results show that a concentrate grade of 76.89% with a recovery of 82.19% and an integration efficiency of 80.77% can be obtainedwhile the slurry concentration of 40 g/L,feed speed of(160 L/h,)water counter pressure of 0.01 MPa and rotationfrequency of 50 Hz.