A self-designed versatile and portable sensing device based on smart phone for colorimetric detection
A self-designed versatile and portable sensing device based on smart phone for colorimetric detection
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自行设计的基于智能手机的多功能便携式比色检测传感装置
DOI：
10.1007/s00216-020-03024-6
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发表时间：
2020-11
影响因子：
4.3
通讯作者：
Yang Jiao
中科院分区：
文献类型：
--
作者：
Li Binghan;Wang Jihong;Tu Honghua;Yang Zhijie;Zhao Dongfang;Feng Huanhuan;Yang Jiao
紫外可见光谱仪作为一种重要的分析仪器，已被广泛应用于各种物质的分析。然而，需要昂贵的设备和熟练的操作人员，这限制了它在实验室外和日常测量中的广泛应用。在本工作中，自行设计了一种基于智能手机的传感设备，作为一种灵敏、经济、方便、便携的测试工具。通过3D打印制作的传感装置用于放置样品溶液并产生光信号，智能手机上的光学传感器作为换能器。该装置中的光源产生宽波长的辐射，通过内部滤光片，只有指定波长的光才能到达测试液。然后，透射光的强度由安装在大多数智能手机中的光学传感器测量，信号也在那里进行处理。通过对实际水样中四种常见重金属离子的检测，验证了该装置的可行性，检测结果与紫外可见光谱仪测定结果吻合较好。这项工作有望为基于智能手机的传感器的构建提供一些启示，这些传感器具有良好的便携性、简单的操作、低成本、高灵敏度和良好的准确性。
A UV-vis spectrometer, as a sort of important analytical instrument, has been widely used to analyze various substances. However, expensive equipment and skilled operators are required, which limits its broad applications for out-of-lab and daily measurements. In this work, a self-designed sensing device based on smart phone was developed as a sensitive, cost-effective, facile, and portable testing tool. The sensing device fabricated by 3D printing was used to lodge a sample solution and produce a light signal, and the optical sensor on a smart phone worked as a transducer. The light source in the device generated wide-wavelength radiation, which passed through an inner filter and only light of a designated wavelength reached the testing solution. The intensity of transmitted light was then measured by an optical sensor internally installed in most smart phones, where the signals were processed as well. The feasibility of our device was verified by detecting four kinds of common heavy metal ions in actual water samples, and the testing results showed good agreement with those obtained from the UV-vis spectrometer. This work is expected to shed some light on the construction of smart phone–based sensors, featuring decent portability, simple operation, low cost, high sensitivity, and good accuracy.
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