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《Chinese Journal of Spectroscopy Laboratory》 2012-06
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Determination of Water Colority Based on Spectrum and Calculation of Color Difference

HUANG Jie SHEN Wei-Min LOU Jun XU Ben YU Pan ZHAO Xiao-Wei(College of Optical & Electronic Science and Technology,China Jiliang University,Hangzhou 310018,P.R.China)  
In order to more accurately and conveniently determine water colority,based on the national standards for the determination of water colority(GB/T 11903-1989),the correlation between the color difference and the colority of platinum-cobalt method and the multiple of dilution multiple method were studied and obtained by spectroscopy and the calculation method of chromaticity,and the correlation equation was established.The experiment results showed that the relations between the color difference and the colority the multiple were well.The colority and dilution multiple of water sample can be obtained through the calculation of the color difference value based on the visible region spectral absorption data of water sample.Further,the converted relation between the colority and the dilution multiple was established with the color difference as relationship among quantity,and it was convenience to change and unify the unit.Applying the method based on spectrum and the calculation of the color difference,the calibrated system no longer needed the standard solutions,and the measured solution infinitized.This method can avoid the errors caused by personal subjective judgment which is more accurate and more reliable.
【Fund】: 浙江省公益技术应用研究项目(2011C23037);; 浙江省自然科学基金项目(Y5090150)
【CateGory Index】: X832;O657.3
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