A multi-led, microcontrolled, portable and inexpensive photometer

Quimica nova

Medeiros, Everaldo Paulo de¹  Araújo, Mário César Ugulino de¹  Lyra, Wellington da Silva¹  Gaião, Edvaldo da Nóbrega¹  Moreira, Pablo Nogueira Teles¹  Vasconcelos, Pablo Cavalcante de¹  Silva, Edvan Cirino da¹ 

[1] Universidade Federal da Paraíba, João Pessoa

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

DOI  :  10.1590/S0100-40422005000600026

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

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

【 授权许可】

CC BY