A green chemical analysis of ethanol using a smart phone

This research presents a novel method for measuring ethanol concentrations using a smartphone. The method involves an oxidation reaction with potassium dichromate and concentrated sulfuric acid, resulting in a green-blue color formation. The color intensity, corresponding to ethanol concentrations r...

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Bibliographic Details
Published in:MethodsX 2024-12, Vol.13, p.102809, Article 102809
Main Authors: Hassan, Jalal, Shermeh, Safdar Mehdizadeh, Koohi, Mohammad Kazem, Pourshaban-Shahrestani, Ali, Zayerzadeh, Ehsan
Format: Article
Language:English
Subjects:
absorbance
calibration
cameras
chemical analysis
Chemistry
color
detection limit
Digital image
Ethanol
mobile telephones
oxidation
photography
potassium
Smartphone
sulfuric acid
Water
wheat
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Summary:This research presents a novel method for measuring ethanol concentrations using a smartphone. The method involves an oxidation reaction with potassium dichromate and concentrated sulfuric acid, resulting in a green-blue color formation. The color intensity, corresponding to ethanol concentrations ranging from 0 to 100%, was captured using a smartphone camera within a specialized photography box. The images were then analyzed using a specific application, converting the color signal into an absorbance value. The calibration curve demonstrated excellent linearity in the range of 0-0.55 v/v % and its detection limit is 0.01 v/v%, with a correlation coefficient exceeding 0.995. The method was successfully applied to measure ethanol in real samples, including ordinary rose water and a bitter wheat drink.•The method is inexpensive.•The method is rapid.•The method is green. [Display omitted]
ISSN:2215-0161
2215-0161
DOI:10.1016/j.mex.2024.102809