应用图像分析法构建食用亮蓝浓度与色度的定量关系

Application of Image Analysis Method to Establishment of Quantitative Relationship between Chromaticity and Concentration of Edible Brilliant Blue

实验室尺度的地下水溶质运移砂槽模型实验是探究溶质在地下含水介质中运移规律的常用方法,而砂槽模型实验中示踪剂的选择及浓度的监测方法是一项非常基础的研究工作,它直接影响到实验室砂槽模型实验的代表性及数据采集的可靠性。有色示踪剂可以通过色度随时间和空间的变化间接得到溶质在地下含水介质中运移规律,避免了实验过程中对含水介质和流场的扰动,已越来越多地被采用。食用亮蓝是一种常见的食品添加剂,它的水溶性强、无毒、不易被砂土颗粒吸附,非常适合地下水渗流示踪研究,但是其浓度与色度的定量关系尚未确定。为了更准确地定量揭示地下水溶质迁移规律,必须首先建立食用亮蓝浓度与色度的定量关系,本文利用图像分析法建立食用亮蓝浓度与色度的定量方程,为该示踪剂在地下水溶质运移示踪试验研究奠定了基础。

The laboratory-scale solute transport sand tank experiment is a common method for exploring the law of solute transport in underground aqueous media.The selection of tracers and the concentration monitoring method in the sand tank experiment is very basic research work.It directly affects the representativeness of laboratory sand tank experiments and the reliability of data collection.Colored tracers can indirectly obtain the solute migration law through the change of chromaticity with time and space,which avoids the disturbance of the aqueous medium and the flow field during the experiment,and is increasingly used.Edible brilliant blue is a common food additive.It has strong water solubility,non-toxicity,and is not easily adsorbed by sand particles.It is very suitable for groundwater seepage tracing research,but the relationship between chromaticity and concentration has not been determined.To reveal the groundwater solute migration rule,we must first establish the quantitative relationship between the chromaticity and concentration of edible brilliant blue.This paper establishes the quantitative equation of edible brilliant blue and concentration by image analysis,which lays the foundation for the experimental study of the tracer in groundwater solute transport.