Detalhes bibliográficos
| Ano de defesa: |
2011 |
| Autor(a) principal: |
Soares, Tiago Furlanetto
 |
| Orientador(a): |
Ganzarolli, Edgard Moreira
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| Banca de defesa: |
Não Informado pela instituição |
| Tipo de documento: |
Dissertação
|
| Tipo de acesso: |
Acesso aberto |
| Idioma: |
por |
| Instituição de defesa: |
UNICENTRO - Universidade Estadual do Centro Oeste
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| Programa de Pós-Graduação: |
Programa de Pós-Graduação em Química (Mestrado)
|
| Departamento: |
Unicentro::Departamento de Química
|
| País: |
BR
|
| Palavras-chave em Português: |
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| Palavras-chave em Inglês: |
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| Área do conhecimento CNPq: |
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| Link de acesso: |
http://localhost:8080/tede/handle/tede/326
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Resumo: |
This work presents a automatic flow system for enrichment of aqueous samples based in solid-liquid extraction. Two syringe pumps, driven solutions of samples, complexation agent (bromocresol green 0.01%), eluent (ethanol), through a flow system, basicaly formed by six three way solenoid valves (Cole-Parmer-USA), one mini-column loaded with Amberlite XAD16 and a sampler mini-funeel. The syringes and valves were controled from a PC - AT386 with a paralel interface (ACL 8111-Adlink) and a serial (RS232C) interface. Also was emploied a interface based in ICULN2803A (SGS-Thomson Microelectronics). The system was optimized for Cd ²+ like test metal, however the proposed system may to be used for any metalic ion after definition of chemical parameter, as like: kind of metal, complexation agent, solid suport and eluent. The detection was performed off-line by flame atomic absorptiom spectrometry. For 10 mL of Cd²+ standards in 50 to 500 μg Lˉ¹ range and 200 μL of eluate was obtained a enrichment factor of 10.6 with a detection limit of 15 μgLˉ¹ and analytical frequency of five determinations/hour. |
