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A Simple Method Based on the Application of a CCD Camera as a Sensor to Detect Low Concentrations of Barium Sulfate in Suspension
Universidade Federal do Rio de Janeiro (UFRJ), Instituto de Química, Avenida Athos da Silveira Ramos, 149 Bloco A–70 andar, Rio de Janeiro, 21941-909, Brazil
Instituto Nacional de Metrologia, Normalização e Qualidade Industrial, Xerém, Duque de Caxias, RJ, Brasil
Centro de Pesquisas e Desenvolvimento Leopoldo Américo Miguez de Mello, Rio de Janeiro, RJ, Brasil
* Author to whom correspondence should be addressed.
Received: 23 October 2010; in revised form: 10 December 2010 / Accepted: 15 December 2010 / Published: 13 January 2011
Abstract: The development of a simple, rapid and low cost method based on video image analysis and aimed at the detection of low concentrations of precipitated barium sulfate is described. The proposed system is basically composed of a webcam with a CCD sensor and a conventional dichroic lamp. For this purpose, software for processing and analyzing the digital images based on the RGB (Red, Green and Blue) color system was developed. The proposed method had shown very good repeatability and linearity and also presented higher sensitivity than the standard turbidimetric method. The developed method is presented as a simple alternative for future applications in the study of precipitations of inorganic salts and also for detecting the crystallization of organic compounds.
Keywords: imaging; precipitation; CCD camera; turbidity
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MDPI and ACS Style
Caciano de Sena, R.; Soares, M.; Pereira, M.L.O.; Cruz Domingues da Silva, R.; Ferreira do Rosário, F.; Cajaiba da Silva, J.F. A Simple Method Based on the Application of a CCD Camera as a Sensor to Detect Low Concentrations of Barium Sulfate in Suspension. Sensors 2011, 11, 864-875.
Caciano de Sena R, Soares M, Pereira MLO, Cruz Domingues da Silva R, Ferreira do Rosário F, Cajaiba da Silva JF. A Simple Method Based on the Application of a CCD Camera as a Sensor to Detect Low Concentrations of Barium Sulfate in Suspension. Sensors. 2011; 11(1):864-875.
Caciano de Sena, Rodrigo; Soares, Matheus; Pereira, Maria Luiza Oliveira; Cruz Domingues da Silva, Rogério; Ferreira do Rosário, Francisca; Cajaiba da Silva, Joao Francisco. 2011. "A Simple Method Based on the Application of a CCD Camera as a Sensor to Detect Low Concentrations of Barium Sulfate in Suspension." Sensors 11, no. 1: 864-875.