Vidal Ezequiel, Lorenzetti Anabela S, Garcia Carlos D, Domini Claudia E
INQUISUR, Departamento de Química, Universidad Nacional del Sur (UNS)-CONICET, Av. Alem 1253, 8000, Bahía Blanca, Argentina.
INQUISUR, Departamento de Química, Universidad Nacional del Sur (UNS)-CONICET, Av. Alem 1253, 8000, Bahía Blanca, Argentina.
Anal Chim Acta. 2021 Mar 22;1151:338249. doi: 10.1016/j.aca.2021.338249. Epub 2021 Jan 26.
A fully-functional smartphone-based spectrophotometer was designed and built using 3D printing. The major advantage of this approach is its capacity to be interfaced with a variety of smartphones, allowing the use of the smartphone's camera and display, and regardless of the relative position of the camera. The analytical performance of the device was analyzed using a model dye (crystal violet), leading to a proportional response for concentrations in the 0.06-15.0 mg L range, with a variability of 1.0% (intra-day) and 2.6% (inter-day). To demonstrate the functionality of the device, the degradation process of the dye by sodium hypochlorite was studied. The results obtained were applied to develop a paper-based test for NaClO in sanitation solutions, in which the time required to bleach the dye was used to estimate the concentration of the solution. This device represents a simple and inexpensive tool for everyday laboratory use and could address important analytical challenges in low-income communities and features a versatile arrangement, that is compatible with a wide variety of smartphones and software platforms.
利用3D打印设计并制造了一种功能齐全的基于智能手机的分光光度计。这种方法的主要优点是能够与各种智能手机连接，利用智能手机的摄像头和显示屏，且不受摄像头相对位置的影响。使用一种模型染料（结晶紫）分析了该设备的分析性能，得出在0.06 - 15.0 mg/L范围内浓度呈比例响应，日内变异性为1.0%，日间变异性为2.6%。为证明该设备的功能，研究了次氯酸钠对染料的降解过程。所得结果被用于开发一种针对卫生溶液中次氯酸钠的纸质测试，其中利用染料褪色所需时间来估计溶液浓度。该设备是一种适用于日常实验室使用的简单且廉价的工具，可应对低收入社区的重要分析挑战，具有通用的配置，能与多种智能手机和软件平台兼容。
