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Authors = Ruth F. V. V. Jaimes

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14 pages, 5022 KiB  
Article
Portable Multispectral Colorimeter for Metallic Ion Detection and Classification
by Mauro S. Braga, Ruth F. V. V. Jaimes, Walter Borysow, Osmar F. Gomes and Walter J. Salcedo
Sensors 2017, 17(8), 1730; https://doi.org/10.3390/s17081730 - 28 Jul 2017
Cited by 21 | Viewed by 7434
Abstract
This work deals with a portable device system applied to detect and classify different metallic ions as proposed and developed, aiming its application for hydrological monitoring systems such as rivers, lakes and groundwater. Considering the system features, a portable colorimetric system was developed [...] Read more.
This work deals with a portable device system applied to detect and classify different metallic ions as proposed and developed, aiming its application for hydrological monitoring systems such as rivers, lakes and groundwater. Considering the system features, a portable colorimetric system was developed by using a multispectral optoelectronic sensor. All the technology of quantification and classification of metallic ions using optoelectronic multispectral sensors was fully integrated in the embedded hardware FPGA ( Field Programmable Gate Array) technology and software based on virtual instrumentation (NI LabView®). The system draws on an indicative colorimeter by using the chromogen reagent of 1-(2-pyridylazo)-2-naphthol (PAN). The results obtained with the signal processing and pattern analysis using the method of the linear discriminant analysis, allows excellent results during detection and classification of Pb(II), Cd(II), Zn(II), Cu(II), Fe(III) and Ni(II) ions, with almost the same level of performance as for those obtained from the Ultravioled and visible (UV-VIS) spectrophotometers of high spectral resolution. Full article
(This article belongs to the Special Issue Fluorescent Probes and Sensors)
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