smartphones and rgb analysis: the recent developments in analytical chemistry

Today's attractive aspects of in situ analysis have pushed the analytical chemists' community toward design of portable and integrated analysis systems. the bottle-neck in creation such systems are returned to the quantification step. already owned by the majority of the population in the world, smartphones equipped with high-resolution cameras, the ability to connect to the internet and install apps, fast processing systems, etc., are an inseparable part of today's life. thus, a smartphone camera as an accessible and portable detector for analysis can be a convenient way to achieve this goal. according to literature, applications of smartphones in analytical chemistry can be classified to optical detection (including colorimetric, and various types of luminescence detections, pixelation as well as label-free detection), electrochemical detection, barcode reading, chemometric applications and smartphone imaging with fluorescence microscopy. here, it is tried to have a brief discussion on these applications with focus on rgb analysis as well as their advantages and disadvantages.