Construção artesanal de um eletrodo íon seletivo a chumbo(II): uma alternativa para disciplinas experimentais Homemade construction of a lead(II) ion selective electrode: an alternative to experimental subjects
| Autor: | Jonatas Gomes da Silva, Arilson Lehmkuhl, Silvia Keli de Barros Alcanfor |
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| Jazyk: | English<br />Spanish; Castilian<br />Portuguese |
| Rok vydání: | 2009 |
| Předmět: | |
| Zdroj: | Química Nova, Vol 32, Iss 4, Pp 1055-1058 (2009) |
| Druh dokumentu: | article |
| ISSN: | 0100-4042 1678-7064 |
| DOI: | 10.1590/S0100-40422009000400039 |
| Popis: | This works proposes a homemade construction of a lead(II) ISE of solid membrane (Ag2S/PbS) to determine Pb2+ ions in potentiometric titrations, using damaged combined glass electrodes. This electrode can be constructed in teaching laboratories, using it as a learning tool related to the theoretical principle of ISE. The analytical curve obtained (y = 27.056x + 337.58; R = 0.996) was linear on the range of 1 x 10-5 to 1 mol L-1 and has presented a very close behavior of the Nernstian. The homemade ISE has presented a similar selectivity to the commercial electrodes, showing to be a good alternative to the experimental activities on teaching laboratories. |
| Databáze: | Directory of Open Access Journals |
| Externí odkaz: |
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