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首页> 外文期刊>Sensors and Actuators >Differential Fresnel-reflection-based fiber biochemical sensor with temperature self-compensation for high-resolution measurement of Cd~(2+) concentration in solution
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Differential Fresnel-reflection-based fiber biochemical sensor with temperature self-compensation for high-resolution measurement of Cd~(2+) concentration in solution

机译：具有温度自补偿的基于菲涅耳反射的差分纤维生化传感器，用于高分辨率测量溶液中的Cd〜（2+）浓度

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摘要

A fiber biochemical sensor system was developed to measure cadmium (Cd2+) solution based on differential temperature self-compensation, which exhibits high sensitivity in detecting Cd2+. The device only consists of a light source, three couplers, two photodetectors, and two fiber sensing ends. Utilizing the efficient adsorption of cadmium ion by allylthiourea, the sensing head was prepared. The estimated concentration resolution of 4.9 x 10(-7) mol/L and the standard deviation of concentration of 4.6 x 10(-6) mol/L in large temperature range are achieved. The measured data is fitted to a second-order polynomial equation with good agreement. Moreover, the differential technique of the sensor can effectively eliminate concentration errors resulting from temperature fluctuations and environment effects, and thus real-time monitoring can be obtained.
机译：开发了一种纤维生化传感器系统，用于基于差温自补偿的镉（Cd2 +）溶液测量，该系统在检测Cd2 +方面具有很高的灵敏度。该设备仅包括一个光源，三个耦合器，两个光电探测器和两个光纤传感端。利用烯丙基硫脲对镉离子的有效吸附，制备了传感头。在较大的温度范围内，获得的估计浓度分辨率为4.9 x 10（-7）mol / L，浓度的标准偏差为4.6 x 10（-6）mol / L。将测量数据拟合到具有良好一致性的二阶多项式方程。而且，该传感器的差分技术可以有效地消除由于温度波动和环境影响而引起的浓度误差，从而可以获得实时监测。

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