Universidade Federal do Rio de Janeiro, Instituto de Química, Avenida Athos da Silveira Ramos, 149 Bloco A-7 andar, Rio de Janeiro, 21941-909, Brazil.
Sensors (Basel). 2011;11(1):864-75. doi: 10.3390/s110100864. Epub 2011 Jan 13.
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.
本文描述了一种简单、快速且低成本的方法，该方法基于视频图像分析，旨在检测低浓度的沉淀硫酸钡。所提出的系统主要由带有 CCD 传感器的网络摄像头和传统的二向色滤光片组成。为此，开发了一种基于 RGB（红、绿、蓝）颜色系统的数字图像处理和分析软件。所提出的方法具有很好的重现性和线性度，并且比标准比浊法具有更高的灵敏度。该方法可作为未来研究无机盐沉淀以及检测有机化合物结晶的简单替代方法。
