Um fotômetro multi-led microcontrolado, portátil e de baixo custo

Química Nova

Edvaldo Da Nóbrega Gaião¹  Everaldo Paulo De Medeiros¹  Wellington Da Silva Lyra¹  Pablo Nogueira Teles Moreira¹  Pablo Cavalcante De Vasconcelos¹  Edvan Cirino Da Silva¹  Mário César Ugulino De Araújo¹ 

[1] ,Universidade Federal da Paraíba Centro de Ciências Exatas e da Natureza Departamento de QuímicaJoão Pessoa PB

关键词: Multi-LED photometer;    microcontroller;    ferrous ion;   

DOI  :  10.1590/S0100-40422005000600026

来源: SciELO

【 摘 要 】

A microcontrolled, portable and inexpensive photometer is described. It uses six light-emitting diodes (LEDs) as radiation sources and a phototransistor as detector, as well as a microcontroller (PIC - Programmable Controller of Interruption). This device provided total autonomy to the proposed photometer, which was successfully applied to determination of Fe2+ in ferrous syrups and of seven clinical biochemical parameters. As the components are cheap (~U$30.00) and easy to find, the proposed photometer is an economical alternative for routine chemical analyses in small laboratories, for research and teaching. Being portable and microcontrolled, it allows doing field chemical analyses.

【 授权许可】

CC BY-NC   
 All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License