选择性微电极测定唾液中氟离子的初步探讨  

Study of the fluoride ion by selective microelectrode in saliva

作　　者：吕晓宁[1] 刘鲁川[1] 袁若[2] 赵勤[2] 

机构地区：[1]第三军医大学附属大坪医院野战外科研究所口腔科,重庆400042 [2]西南师范大学化工学院,重庆400715

出　　处：《牙体牙髓牙周病学杂志》2003年第2期78-81,共4页Chinese Journal of Conservative Dentistry

摘　　要：目的 :研制氟离子选择性微电极 (F -ISME)并探讨其在口腔领域应用的可行性。方法 :采用氟化镧电极晶体 (LaF3:EU :Ca)为敏感膜制备F -ISME ,并进行各项性能测试 ,结合氟离子选择性电极 (F -ISE)对成人唾液样本的氟离子进行检测和对比分析。结果 :F -ISME的检测下限为 2 .5× 10 -6 mol/L ,试样的加标回收率平均为 95 .5 % ,线性范围、重现性、稳定性、响应时间、pH范围等各项性能良好 ,对唾液中氟离子的测定与F -ISE基本一致。结论 :F -ISME具有简便、快速、敏感、准确的性能 。AIM:To prepare fluoride ion-selective microelectrode (F-ISME) and to evaluate their feasibility in dental research. METHODS:The sense element of F-ISME is LaF 3 crystal.Its different properties were tested.The fluoride concentration of adult human saliva was measured and compared by both fluoride electrode and F-ISME. RESULTS:The lowest limitation of F-ISME was 2.5×10 -6 mol/L.The rate of recovery in sample with standard reference material was 95.5%. The linear response, reproducibility, stability, response time and pH range were good. The results of measurement of two methods in saliva were similar. CONCLUSION: The results indicate that the F-ISME has advantages of the simplicity, rapidity, sensitivity, accuracy and promises a considerable in field of dental research.

关 键 词：唾液 氟离子 氟离子选择性微电极 测定 

分 类 号：R333.1[医药卫生—人体生理学]