Please use this identifier to cite or link to this item:
http://acervodigital.unesp.br/handle/11449/71037
- Title:
- Espectrofotometria de longo caminho óptico em espectrofotô metro de duplo-feixe convencional: uma alternativa simples para investigações de amostras com densidade óptica muito baixa
- Long optical path length spectrophotometry in conventional double-beam spectrophotometers: A simple alternative for investigating samples of very low optical denshy
- Universidade Estadual Paulista (UNESP)
- 0100-4042
- 1678-7064
- We describe the design and tests of a set-up mounted in a conventional double beam spectrophotometer, which allows the determination of optical density of samples confined in a long liquid core waveguide (LCW) capillary. Very long optical path length can be achieved with capillary cell, allowing measurements of samples with very low optical densities. The device uses a custom optical concentrator optically coupled to LCW (TEFLON® AF). Optical density measurements, carried out using a LCW of ̃ 45 cm, were in accordance with the Beer-Lambert Law. Thus, it was possible to analyze quantitatively samples at concentrations 45 fold lower than that regularly used in Spectrophotometric measurements.
- 15-Jun-2009
- Quimica Nova, v. 32, n. 2, p. 488-492, 2009.
- 488-492
- Light concentrator
- Liquid core waveguide (LCW)
- Very long path length
- http://dx.doi.org/10.1590/S0100-40422009000200036
- Acesso aberto
- outro
- http://repositorio.unesp.br/handle/11449/71037
There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.