Verificação de metodologia de análise de corantes na indústria de produtos automotivos

Abstract

With the increase in the automotive fleet in Brazil, the demand for products and services that maintain and revitalize the aesthetics of vehicles has also expanded, making it more necessary to guarantee the visual and functional quality of the products offered by the car care industry. Therefore, a viable method for the quantification of dyes in the industrial routine is essential to promote the quality of production processes. Spectrophotometric analysis emerges as an alternative, as it is a low-cost methodology, especially in comparison with other methods applied for the same analysis, with high reproducibility and good precision and accuracy. This work aims to evaluate the applicability of this method in an industrial environment, avoiding possible sources of error and analyzing the best conditions for analyzing dyes before and after being manipulated in products, through the spectrophotometric analysis of solutions with known concentrations of tartrazine yellow, rhodamine-B, and turquoise blue dyes. At the end of the analysis, the positive aspects of the method were perceived, such as high reproducibility and the easy experimental procedure required for the analysis, and possible points for improvement, such as a better choice of standard solution concentrations for the construction of calibration curves and use the same equipment for all the analysis. Therefore, the methodology proved to be consistent with the dynamism and speed required in the daily routine of an industrial quality control laboratory.