Simplified Low-Cost Colorimetry for Education and Public Engagement

• J. O'Donoghue ^[1]
  1. [1] Trinity College Dublin

     Trinity College Dublin

     Irlanda

     
• Localización: Journal of chemical education, ISSN 0021-9584, Vol. 96, Nº 6, 2019, págs. 1136-1142
• Idioma: inglés
• Texto completo no disponible (Saber más ...)
• Resumen

  • This work describes the design, building, and testing of miniature, low-cost LED–LDR colorimeters for absorption-spectrophotometry experiments. It also describes using these colorimeters for simplified context-based-learning (CBL) activities in school teaching laboratories and for public-engagement events. The colorimeters are simple and robust, performing well against a conventional benchtop UV–vis spectrophotometer. Data collection and analysis is quick and intuitive, allowing for efficient turnaround between groups and making it particularly useful at public-engagement events. The experiments and activities described here are based on real-life examples to emphasize the usefulness of chemical analysis and quantification in everyday life.