CAJ | 학술논문

建立了测定水中微量氟化物的催化动力学光度方法。在硫酸介质中,微量氟化钠对高碘酸钾氧化罗丹明6G具有催化作用,使罗丹明6G的荧光强度减弱。结果表明：溶液的荧光激发波长和发射波长分别为535nm、556nm,氟化钠浓度在0．04~2．8μg·mL-1时与荧光强度ΔF呈良好的线性关系。其线性回归方程与相关系数为△F=26．94C+45．135,R2=0．9909,检出限为0．023μg·mL-1。回收率为98．8%~101%,RSD为0．02~0．85,该方法简便,快速,灵敏度好,准确度高,可用于水中微量氟化物的测定。
건립료측정수중미량불화물적최화동역학광도방법。재류산개질중,미량불화납대고전산갑양화라단명6G구유최화작용,사라단명6G적형광강도감약。결과표명：용액적형광격발파장화발사파장분별위535nm、556nm,불화납농도재0．04~2．8μg·mL-1시여형광강도ΔF정량호적선성관계。기선성회귀방정여상관계수위△F=26．94C+45．135,R2=0．9909,검출한위0．023μg·mL-1。회수솔위98．8%~101%,RSD위0．02~0．85,해방법간편,쾌속,령민도호,준학도고,가용우수중미량불화물적측정。
A novel catalytic fluorescence method for the determination trace NaF was developed. In sulphuric acid media,trace NaF have the catalysis effect on the oxidation reaction of potassium periodate to rhodamine 6 G,which makes fluorescence decrease. The results showed that the fluorescence excitation wavelength and emission wavelength of the solution were respectively 535 nm and 556 nm,and when the concentration of sodium fluoride is in the range of 0. 04~0. 04 g·mL-1 ,the intensity of fluorescence have a good linear relationship with concentration of sodium fluoride,the linear regression equation and coefficient data were △F=26. 94C+45. 135 and R2=0. 9909 with respectively. The limit of detection was 0. 023 μg·mL-1 ,the recoveries ranged from 98. 8%to 101%and RSDs were 0. 02% ~0. 85%. This method is simple,rapid,sensitivity and high accuracy,and it can be used in the determina-tion of trace fluoride in water.