Uso de scanner em espectrofotometria de absorção molecular: aplicação em experimento didático enfocando a determinação de ácido ascórbico Molecular absorption spectrophotometry using a scanner: proposal of a didactic experiment for ascorbic acid determination
<abstract language="eng">Quantitative analysis of colored substances is generally performed using a spectrophotometer for detection of radiation. However, the combination of digital images and mathematical conversion of colors is an alternative for quantitative procedures based on co...
| الحاوية / القاعدة: | Química Nova |
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| المؤلفون الرئيسيون: | , , , |
| التنسيق: | مقال |
| اللغة: | الإنجليزية |
| منشور في: |
Sociedade Brasileira de Química
2008-01-01
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| الموضوعات: | |
| الوصول للمادة أونلاين: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422008000600050 |
| الملخص: | <abstract language="eng">Quantitative analysis of colored substances is generally performed using a spectrophotometer for detection of radiation. However, the combination of digital images and mathematical conversion of colors is an alternative for quantitative procedures based on colored chemical reactions. This work proposes a didactic experiment using a scanner for determination of ascorbic acid in medicines based on the formation of the Prussian blue complex. Results were in good agreement with a conventional spectrophotometer method and the procedure is attractive for instrumental analysis undergraduate courses. |
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| تدمد: | 0100-4042 1678-7064 |