TY  - BOOK
AU  - Barbosa, Leila S. V. 
AU  - Strauch, Pietra | Santos, Daniele C. M. B. | Korn, Maria Graças A. | Santana, Rodolfo M. M. 
TI  - Homemade Paper Analytical Device and Digital Image Colorimetry as Tools for Learning about Calibration Curve Methods during the COVID Pandemic: : A Remote vs In-Person Class Evaluation  (Journal Article)
SN  - 0021-9584
PY  - 2023///
CY  - Washington DC 
PB  - :American Chemical Society
KW  - analytical chemistry| digital image colorimetry| paper analytical device| homemade instrumentals| distance learning| self-instruction| quantitative analysis| Covid-19| Pandemic
N1  -  ***______{For Hard Copy, Please visit Library.}________***
N2  -  Abstract: During the pandemic caused by SARS-CoV-2 (COVID-19), a paper analytical device (PAD) was proposed as a tool for remote laboratory classes for undergraduate chemistry to teach calibration curve concepts. For this experiment, students were taught how to prepare a PAD, calibrate standard solutions, construct a calibration curve, and treat data obtained by colorimetry digital image, by applying household utensils only. The proposed experiment was evaluated considering remote and in-person courses. More than 80% of the students in both groups reached grades greater than 60%. The students’ survey demonstrated that 80 to 100% of the students (n = 6) agreed or strongly agreed that the experiment achieved the learning outcomes concerning the calibration curve. For 50% of the group, it was also found that colorimetric reactions could be more effective than the simple dye impregnation method
UR  - https://doi.org/10.1021/acs.jchemed.2c01081
ER  -