TbCl_(3)对水中Fe^(3+)的检测

Detection of Fe^(3+)in Water by TbCl_(3)

对TbCl_(3)溶液进行荧光测试,发现当Fe^(3+)存在时,Tb^(3+)会有一定的荧光猝灭,在一定范围内,Fe^(3+)的浓度与Tb^(3+)发光强度成线性关系,Tb^(3+)的发光会随着Fe^(3+)浓度的增加而减弱,由此建立了一种新的检测Fe^(3+)的方法。计算出用此方法检测Fe^(3+)的检测限为2.84×10^(-4)mol/L,且对Fe^(3+)的检测具有良好的特异性和选择性。

Fluorescence tests on TbCl_(3)solutions revealed a certain fluorescence quenching in the presence of Fe^(3+).In a certain range,the concentration of Fe^(3+)has a linear relationship with the luminous intensity of Tb^(3+).The photoluminescence intensity of Tb^(3+) has a gradual decrease with the increase in the Fe^(3+)concentration,thus establishing a new method for detecting Fe^(3+).The limit of detection was calculated to be 2.84×10^(-4) mol/L.This method has good specificity and selectivity for the detection of Fe^(3+).