Detalhes bibliográficos
| Ano de defesa: |
2005 |
| Autor(a) principal: |
Oliveira, Daniel Batista de |
| Orientador(a): |
Nogueira, Ana Rita de Araújo
 |
| Banca de defesa: |
Não Informado pela instituição |
| Tipo de documento: |
Dissertação
|
| Tipo de acesso: |
Acesso aberto |
| Idioma: |
por |
| Instituição de defesa: |
Universidade Federal de São Carlos
|
| Programa de Pós-Graduação: |
Programa de Pós-Graduação em Química - PPGQ
|
| Departamento: |
Não Informado pela instituição
|
| País: |
BR
|
| Palavras-chave em Português: |
|
| Área do conhecimento CNPq: |
|
| Link de acesso: |
https://repositorio.ufscar.br/handle/20.500.14289/6401
|
Resumo: |
In this work, development of a multicommutation system for the determination of total amino acids in samples of plants were proposed. The system is based on the complexition of amino functional groups of amino acids by ninhydrin. As system detection was used an spectrophotometer working in the visible range. The multicommutation developed system employed five solenoid valves for solution management and a peristaltic pump for the fluid propulsion. The time and sequence of switching of valves, the velocity of peristaltic pump and the data acquisition were performed through the development program in the Labview plataform using a computer with an eletronic interface. The system shows a linear reponse up to 2.0 x10-3 mol L-1, with relative standard deviation of 1.09% (n = 10), , sample troughput of 15 determinations per hour and a detection limit of 3.6 x10-5 mol L-1. The system was applied to plant samples and the results obtained using the standard addition test presented receiver between 96 and 101%. |
