Abstract To further optimize the convenience and universality of chemistry colorimetric experiments in high school, the element of iodine in kelp was measured using a smartphone application (Colorimetric Titration) for determining the concentration of iodine in solutions. The integration of image acquisition, data collection, data analysis, and result display has been achieved. Additionally, concentrations of potassium permanganate and iron content in iron supplements were measured. The results showed that the standard deviations (R2) of seven samples were all above 0.99, and there was no significant difference compared to the results obtained using UV-visible spectrophotometry. This confirms the method is high user-friendliness, accuracy, and rapidity, making it applicable for measuring various color-indicating ion concentrations. This experiment can stimulate students’ interest and innovation in experiments, providing new perspectives for high school chemistry colorimetric experiments and promoting the digitization of education.
QUE Rong-Hui, WU Yao, YIN Si-Ran. Application of Smartphones in Colorimetric Analysis Experiment in High School Chemistry[J]. Chinese Journal of Chemical Education, 2024, 45(11): 101-106.
