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为了更加准确方便的测定水质色度,基于水质色度测定国家标准(GB/T11903-1989),采用光谱学与色度学计算方法,研究色差与铂钴比色法色度、稀释倍数法倍数之间的相关性,建立了相关性方程。研究结果表明:色差与色度、倍数都有良好的相关性,通过采集水样可见区吸收光谱数据,经色差计算即可获得水样色度或倍数。进一步,以色差作为中间关系量,建立了色度与稀释倍数的转换关系式,方便单位转换统一。利用光谱及色差计算测定水质色度的方法,系统定标后就无需标准溶液,待测溶液颜色也不受限制,并且避免人为主观判断误差,更准确、更可靠。
In order to determine the colorimetric accuracy of water more precisely and accurately, based on the national standard of water colorimetric determination (GB / T11903-1989), the chromaticity, The correlation between the established correlation equation. The results show that the color difference has good correlation with the chromaticity and multiples. By collecting the data of absorption spectra in the visible region of the water sample, the chromaticity or multiples of the water sample can be obtained by colorimetric calculation. Further, taking the color difference as the intermediate relation, the conversion relation between the chromaticity and the dilution factor is established, which makes it convenient for the units to be converted and unified. Using spectrum and color difference calculation to measure the colorimetric method of water quality, the system does not require standard solution after calibration, and the color of the solution to be tested is not limited. And it avoids the subjective judgment error by man and is more accurate and reliable.