基于普鲁士蓝修饰的金和铂丝网印刷电极的传感器和生物传感器。
Sensor and biosensor based on Prussian Blue modified gold and platinum screen printed electrodes.
作者信息
de Mattos Ivanildo Luiz, Gorton Lo, Ruzgas Tautgirdas
机构信息
Department of Analytical Chemistry, University of Lund, P.O. Box 124, S-22100 Lund, Sweden.
出版信息
Biosens Bioelectron. 2003 Mar;18(2-3):193-200. doi: 10.1016/s0956-5663(02)00185-9.
Gold (Au) and platinum (Pt) screen-printed electrodes were modified with Prussian Blue (PB) for the development of amperometric sensors selective for hydrogen peroxide detection. The sensors exhibited sensitivities towards H(2)O(2) equal to 2 A M(-1) cm(-2) for Au and 1 A M(-1) cm(-2) for Pt electrodes. The sensors were also employed as the basis for construction of glucose biosensors through further modification with crystallised glucose oxidase immobilised in a Nafion membrane. In order to improve the operational stability of the modified electrodes a buffer solution containing tetrabutylammonium toluene-4-sulfonate was used. The long-term performance of the sensors and biosensors were evaluated by continuous monitoring of hydrogen peroxide and glucose solutions (50 microM and 1 mM, respectively) in the flow-injection mode for 10 h.
金（Au）和铂（Pt）丝网印刷电极用普鲁士蓝（PB）进行修饰，以开发用于选择性检测过氧化氢的电流型传感器。这些传感器对过氧化氢的灵敏度，金电极等于2 A M⁻¹ cm⁻²，铂电极等于1 A M⁻¹ cm⁻²。通过用固定在Nafion膜中的结晶葡萄糖氧化酶进一步修饰，这些传感器还被用作构建葡萄糖生物传感器的基础。为了提高修饰电极的操作稳定性，使用了含有四丁基甲苯-4-磺酸盐的缓冲溶液。通过在流动注射模式下连续监测过氧化氢和葡萄糖溶液（分别为50 μM和1 mM）10小时，评估了传感器和生物传感器的长期性能。
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