CAJ | 학술논문

对尿素水溶液液膜厚度和浓度进行定量分析在工业应用中至关重要，而传统的测量方法只能对液膜厚度和浓度分别进行测量。提出了一种用于尿素水溶液液膜厚度和浓度高精度同步在线测量的新方法。通过灵敏度分析和内部交叉验证，选取了测量精度及灵敏度最高的一对波长组合(7040.75 cm?1与6761.00 cm?1)。由内部交叉验证可知，该方法测量液膜厚度误差小于1.40%，浓度误差小于5.76%。
대뇨소수용액액막후도화농도진행정량분석재공업응용중지관중요，이전통적측량방법지능대액막후도화농도분별진행측량。제출료일충용우뇨소수용액액막후도화농도고정도동보재선측량적신방법。통과령민도분석화내부교차험증，선취료측량정도급령민도최고적일대파장조합(7040.75 cm?1여6761.00 cm?1)。유내부교차험증가지，해방법측량액막후도오차소우1.40%，농도오차소우5.76%。
Measurement of film thickness and concentration of urea-water solution is very important in many practical applications. However, these two important parameters can only be determined separately by conventional measurement methods. Here, a novel online measurement method by laser spectroscopy was developed to obtain the film thickness and concentration of urea-water solution simultaneously. By sensitivity analysis and cross-validation, an optimal wavelength pair (7040.75 cm?1 and 6761.00 cm?1) was chosen to determine film thickness and concentration. As shown from cross-validation, uncertainties of the developed method were smaller than 1.40%for thickness measurement and 5.76%for concentration measurement.