摘要
目的改进磷酸氢钙中氟化物的检查方法。方法采用银-氯化银电极为参比电极,氟离子选择电极法测定磷酸氢钙中氟化物的含量。结果氟离子浓度在10~1 000 ng.mL-1时,电位值差值（△mv）与氟离子浓度（ng.mL-1）的对数值呈良好线性关系。结论该法操作简便、结果准确可靠,重现性良好。
Objective To improve the test method fluoride limit in Calcium Hydrogen Phosphate.Methods Using Ag/AgCl electrode as reference electrode,fluorine content was determined by the method of fluoride ion selective electrode.Results There was a good linear relationship between the difference of the potential value（△mv） and the fluoride concentration（ng·mL-1）in the range of 10～1 000 ng·mL-1.Conclusion The method was simple,accurate,reliable with good reproducibility.
出处
《齐鲁药事》
2011年第6期333-334,共2页
qilu pharmaceutical affairs
关键词
磷酸氢钙
氟离子选择电极
氟化物检查
Calcium Hydrogen Phosphate
fluoride ion selective electrode
limit test for fluoride
