溶胶凝胶溴离子选择电极的研制与应用

Development and Applications of Bromine Ion Selective Electrode Based on the Sol-Gel Technique

报道了一种以溶胶凝胶为载体的溴离子选择电极。电极信号响应线性范围为1 .0× 1 0 - 1～ 1 .0× 1 0 - 5mol/L,斜率为 5 7m V/pc;检出限为 2 .5× 1 0 - 6 mol/L。该电极响应快 ,体积小 ,稳定性和重现性好。电极用作测定溴离子浓度 。

The sol gel technique has a great future for immobilization. This paper reports the sol gel as a carrier for bromine ion selective electrode. The electrode showed Nernst response for bromine ion in the linear range of 1.0×10 -1 ～1.0×10 -5 mol/L with a slope of 57 mV/p c . The detection limit is 2.5×10 -6 mol/L. The electrode has the advantages of fast response, small size, good stability and repreducibility. The electrode was used to determine the bromine ion concentration. The results are satisfactory.