LEI Jian-lin, LI Fang, ZHAO Wan, et al. Preparation Technology of AsO Magnetic Microspheres[J]. Chinese journal of experimental traditional medical formulae, 2011, 17(21): 9-11.
LEI Jian-lin, LI Fang, ZHAO Wan, et al. Preparation Technology of AsO Magnetic Microspheres[J]. Chinese journal of experimental traditional medical formulae, 2011, 17(21): 9-11.DOI:
Objective: To study on preparation process of As2O3 magnetic microspheres. Method: To prepare Fe3O4 magnetic particles by chemical coprecipitation
prepared As2O3 magnetic microspheres by phacoemulsification and solvent extraction evaporation method
established a method to determinate encapsulation efficiency of microspheres by DDC-Ag method and to optimize preparation technology. Result: Optimum process was A3B2 C 1
Fe3O4-As2O3(1 ∶2)
concentration of polylactic acid was 0.6% and concentration of PVA was 3%. The average content of prepared magnetic microspheres was 26%
encapsulation efficiency was 60%. Conclusion: The prepared As2O3 magnetic microspheres had high encapsulation efficiency with less toxicity.