Determinação de íons metálicos utilizando métodos colorimétricos e dispositivos microfluídicos em papel: uma revisão da literatura

Abstract

The quantitative determination of metal ions is of economic, human health and environmental interest, due to the contaminating/polluting characteristics, but also due to their vast applications and functions, from metabolic in the human body to industrial uses. For the development of chemical analysis, it is necessary that reliable analytical methods are developed and, for this task, several analytical techniques have been used. Despite producing reliable, sensitive and selective results, the most common analytical methodologies have high cost, low portability and may require laborious procedures. With the popularization and recognition of a low cost, high sensitivity and selectivity analytical platform, paper-based microfluidic devices (µPAD's) combined with colorimetric detection via digital image processing have been used for wide applications in the determination of metal ions for environmental analysis, industrial and biological. The objective of this undergraduate thesis of the chemistry course is to review and provide an overview of recent advances in the development of analytical methods for metal ion determination using microfluidic paper devices (µPAD's) and colorimetric detection via digital imaging, discussing some works developed in the area from 2017 to 2022. The device manufacturing steps, the types of image processing used and the performance of the device developed in the determination of iron (III, nickel (II), copper (II), mercury (II).