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| To Make a Good Infrared Spectrum in NaCl Aqueous Solution Where Lambert-Beer’s Law is Not to be Obeyed |
| YAO Meng, WANG Hai-shui* |
| School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China |
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Abstract If the solution concentration c and the spectral absorbance A is not obeyed Lambert-Beer’s Law，an individual solution sample should be prepared and acquired in order to obtain its infrared spectrum. The binary linear regression analysis and hybrid spectrum were applied to NaCl aqueous solution. The following conclusions have been reached: (1) The infrared spectra of NaCl aqueous solutions with concentrations of c1, c2 are Ac1, Ac2, respectively. Then the regression equation Ahc(c1, c2)=âAc1+ Ac2 is set up, where the relationship among c1, c2 and c is c1＜c＜c2. Hybrid spectrum Ahc(c1, c2) can be very similar to real spectrum Ac if â and values are selected properly. (2) The smaller difference between c2 and c1, the higher similarity between Ahc(c1, c2) and Ac is. (3) The regression equation Ahc(2%, 30%)=âA2%+A30% can be applied to the concentration range 2%～30%. (4) The relationships between â and c, and c are c=-3.592c+1.058 9 and =3.565c-0.055 15. If we select c, we can easily obtain â and then â and are substituted into regression equation Ahc(c1, c2)=âAc1+Ac2. All hybrid spectra are very similar to the real spectra and they can even replace the real spectra.
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Received: 2020-07-13
Accepted: 2020-10-28
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Corresponding Authors:
WANG Hai-shui
E-mail: wanghsh@scut.edu.cn
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[1] Han S Y, Jeong K M, Yoo D E, et al. Journal of Separation Science, 2017, 40(20): 4050.
[2] Chen N N, Chassenieux C, Nicolai T. Food Hydrocolloids, 2018, 77: 66.
[3] Ershov B G, Gordeev A V, Seliverstov A F. Ozone Science & Engineering, 2017, 39(2): 69.
[4] Zuniga-Hinojosa M A, Martinez J. Industrial & Engineering Chemistry Research, 2019, 58(27): 12369.
[5] Jiang H, Debenedetti P G, Panagiotopoulos A Z. Journal of Chemical Physics, 2019, 150(12): 124502.
[6] Wu X G，Lu W J，Ou W J, et al. Journal of Raman Spectroscopy, 2017, 48(2): 314.
[7] Koroleva A V, Matveev V K. Moscow University Physics Bulletin, 2018, 73(4): 388.
[8] Rauh F, Mizaikoff B. Appl. Spectrosc., 2016, 70(7): 1214.
[9] Peters R D, Noble S D. Journal of Near Infrared Spectroscopy, 2019, 27(2): 147.
[10] Max J J, Gessinger V, van Driessche C, et al. The Journal of Chemical Physics, 2007, 126(18): 184507.
[11] ZHANG Zhen，ZHANG De-cong(张 震，张德聪). Experiment Design and Data Evaluation(实验设计与数据评价). Guangzhou: South China University of Technology Press(广州: 华南理工大学出版社), 2014. 251.
[12] Kanou M, Kameoka T, Suehara K I, et al. Bioence Biotechnology & Biochemistry, 2017, 81(4): 735.
[13] Gofurov S, Makhmanov U, Kokhkharov A, et al. Appl. Spectrosc., 2019, 73(5): 503.
[14] Ito S, Iwaki M, Sugita S, et al. Journal of Physical Chemistry B, 2018, 122(1): 165.
[15] Sun Q. Vibrational Spectroscopy, 2012, 62: 110. |
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