光谱学与光谱分析, 2017, 37 (5): 1466, 网络出版: 2017-06-20
聚丙烯酰胺溶液的光谱特性及其浓度光学检测
Optical Property and Concentration Optical Detection of Polyacrylamide Solution
聚丙烯酰胺溶液 光谱特性 浓度 光学检测 Polyacrylamide solution Spectrum characteristics Concentration Optical detection
摘要
提出了光学检测聚丙烯酰胺溶液的方法, 利用TU-1901/1900双光束紫外可见分光光度计、 IRPrestige-21傅立叶变换红外光谱仪测量5~600 mg·L-1浓度范围内聚丙烯酰胺溶液的透射光谱, 研究了其在波段190~900 nm和400~4 000 cm-1的光谱特性, 进行了其浓度的反演分析。 研究表明: 聚丙烯酰胺溶液在200~300 nm和400~920 cm-1, 2 986~3 684 cm-1范围存在较强吸收特性, 其透光度在220 nm, 2 623 cm-1处有一定的线性关系; 在紫外波段基于2, 3和4个透光度测量值反演其未知浓度的计算误差最大值分别为6.98%, 2.34%和0.79%。
Abstract
The method of optical detection to test polyacrylamide solution was developed which took advantage of TU-1901/1900 double-beam UV-Vis spectrophotometer and IRPrestige-21 FT-IR Spectrometer to measure the transmitted spectrum of polyacrylamide solution in the range of 5~600 mg·L-1 concentration. The spectrum characteristics and inverse analysis their concentrations of polyacrylamide solution within the wavelength of 190~900 nm and 400~4 000 cm-1 were investigated. The results show that there are strong absorption of polyacrylamide solution in 200~300 nm, 400~920 cm-1, 2986~3 684 cm-1 and the transmittances of solution with different concentrations have linear relationship at 220 nm and 2 623 cm-1; the maximum calculation error to inverse the unknown concentrations successively are 6.98%, 2.34% and 0.79%, when inversion calculation uses 2, 3, 4 measured values in ultraviolet band.
齐晗兵, 李舒婷, 王秋实, 吴国忠, 李栋. 聚丙烯酰胺溶液的光谱特性及其浓度光学检测[J]. 光谱学与光谱分析, 2017, 37(5): 1466. QI Han-bing, LI Shu-ting, WANG Qiu-shi, WU Guo-zhong, LI Dong. Optical Property and Concentration Optical Detection of Polyacrylamide Solution[J]. Spectroscopy and Spectral Analysis, 2017, 37(5): 1466.