A multi-led, microcontrolled, portable and inexpensive photometer

Química Nova

Universidade Federal da Paraíba, João Pessoa¹  Medeiros, Everaldo Paulo de¹  Araújo, Mário César Ugulino de¹  Lyra, Wellington da Silva¹  Gaião, Edvaldo da Nóbrega¹  Moreira, Pablo Nogueira Teles¹  Silva, Edvan Cirino da¹  Vasconcelos, Pablo Cavalcante de¹ 

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-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】

Unknown