DETERMINATION OF TURBIDITY OF WATER WITH PHOTOGRAPHIC METHOD
Владимир Ильич Голованов, S. V. Golovanov, R. S. Batyshev · Industrial laboratory Diagnostics of materials · 2018
The study considers the possibility to use a digital camera with further computer processing of colorimetric characteristics of the image with the aim to measure kaolin turbidity of water. The calculations are made using a modified Jackson turbidimeter. It is showed that the contrast of the photographic picture of the adjustor is a suitable colorimetric function of the turbidity in the RGB color space. The interference of yellow coloring of water samples is smoothed when turbidity is measured on the green channel. The relation of the given contrast (degree of turbidity) and suspended particles concentration is determined. By its form, the relation is similar to the law of light absorbance. The rule of additivity of turbidities of the mixed solutions is determined by the method of multiple standard additions of kaolin suspension to tap water sample.