An organically modified sol-gel membrane for detection of lead ion by using 2-hydroxy-1-naphthaldehydene-8-aminoquinoline as fluorescence probe

作者：Guo Liangqia; Hong Songchen; Lin Xucong; Xie Zenghong; Chen Guonan^*

来源：Sensors and Actuators B: Chemical , 2008, 130(2): 789-794.

DOI：10.1016/j.snb.2007.10.041

• sol-gel
• sensor
• lead ion

A fluorescent reagent, 2-hydroxy-1-naphthaldehydene-8-aminoquinoline (HNAAQ) was synthesized, and an organically modified sol-gel membrane for detection of lead ion by using HNAAQ as fluorescence probe was fabricated. Under the optimum conditions, by a coplanar effect and the degree of molecular conjugation due to the complexation of Ph2+ with HNAAQ the relative fluorescence intensity I-100/I-0 of the sensing membrane is linearly increased over the Pb2+ concentration range of 1.9 x 10(-7) to 1.9 x 10(-4) mol/L with the detection limit of 8.3 x 10(-8) mol/L. The preparation of this organically modified sol-gel membrane and its characteristics were investigated in detail.

• 出版日期2008-3-28
• 单位福州大学