A Study on the Quantitative Measurement Method of Organoleptic Chromaticity for Sandy Water

摘要

Water landscape quality is an important part of environmental quality. However, in the environment impactassessment, there is no method at present that can quantitatively assess the colour changes of the waterlandscape affected by sediments. This paper presents a conception of organoleptic chromaticity accordingto the engineering requirement. Water organoleptic chromaticity is defined as a water chromaticity which iscaused by both soluble substances and insoluble substances and observed directly by naked eyes. Usingthe spectrophotometry, it was found that the maximum absorption peak of coloured-turbid water occurred at350nm which is defined as the characteristic wavelength of water organoleptic chromaticity. Based on thestandard turbidity and chromaticity solutions, the metric system of organoleptic chromaticity was established.The absorbance of water with different turbidity and chromaticity showed that it is linear with the organolepticchromaticity. Measuring the organoleptic chromaticity of different sandy waters, the results demonstratedthat the metric system of organoleptic chromaticity could apply to the quantitative assessment of landscapequality for engineering sandy water in practical engineering.