info:eu-repo/semantics/article
Use of universal 3D-Printed smartphone spectrophotometer to develop a time-based analysis for hypochlorite
Fecha
2021-03-22Registro en:
Vidal, Ezequiel Martin; Lorenzetti, Anabela Silvana; Garcia, Carlos D.; Domini, Claudia Elizabeth; Use of universal 3D-Printed smartphone spectrophotometer to develop a time-based analysis for hypochlorite; Elsevier Science; Analytica Chimica Acta; 1151; 8249; 22-3-2021; 1-8
0003-2670
CONICET Digital
CONICET
Autor
Vidal, Ezequiel Martin
Lorenzetti, Anabela Silvana
Garcia, Carlos D.
Domini, Claudia Elizabeth
Resumen
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−1 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.