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Low cost method for copper determination in sugarcane spirits using Photometrix UVC® embedded in smartphone
Fernanda C Böck1, Gilson A Helfer2, Adilson B da Costa2
1Universidade Federal do Rio Grande do Sul, Instituto de Química, Av. Bento Gonçalves, 9500 Porto Alegre, RS, Brazil.
Food Chemistry
|August 8, 2021
Summary
Smartphone image analysis enables accurate copper quantification in cachaça by forming a blue complex with cuprizone. This portable, low-cost method offers an alternative to traditional techniques for analyzing alcoholic beverages.
Area of Science:
- Analytical Chemistry
- Food Science
Background:
- Copper contamination in beverages like cachaça is a concern.
- Accurate quantification of copper is essential for quality control.
Purpose of the Study:
- To develop and validate a smartphone-based method for copper quantification in cachaça.
- To compare the smartphone method with UV-Vis spectrophotometry.
Main Methods:
- Copper quantification using digital image analysis of the copper-cuprizone complex via smartphone.
- Optimization of complexation reaction conditions and image acquisition parameters.
- Validation using univariate and multivariate (Partial Least Squares - PLS) calibration modes.
Main Results:
- The smartphone method accurately determined copper levels in cachaça samples.
- Results showed good agreement with the reference UV-Vis spectrophotometry method.
- The method demonstrated portability, low cost, and reduced reagent consumption.
Conclusions:
- Smartphone-based digital image analysis is a viable and accurate technique for copper determination in cachaça.
- This method offers practical advantages over traditional analytical techniques for beverage analysis.
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