Determinación de cinc a microescala en un medicamento especifico
This work presents zinc determination in certain medicines that contain zinc oxide and zinc undecylenate. The technique consists of a spectrophotometric micro-scale titration, where EDTA is used as titrant, and xylenol orange as an indicator, in a medium adjusted to pH = 6 with acetic acid and sodium acetate. After each added portion of EDTA, the absorbance value is measured at a selected wavelength, in order to detect the end-point of the spectrophotometric titration. The results already obtained are satisfactory and promote student's interest. An additional contribution intends to propose the use of micro-scale techniques.
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| Main Authors: | , |
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| Format: | Digital revista |
| Language: | Spanish / Castilian |
| Published: |
Sociedade Brasileira de Química
2004
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| Online Access: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422004000500025 |
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