Abstract:The interaction between tetradecyl dimethyl benzyl ammonium chloride (TDBAC) and fatty alcohol polyoxyethylene ether (AEO-9) could significantly interfere with the ultraviolet absorption intensity of TDBAC in an aqueous solution. The results showed that AEO-9 can improve the ultraviolet absorption intensity of TDBAC and can greatly decrease the apparent critical micelle concentration (cmc) of TDBAC. When the concentration of AEO-9 increased from 0 to 0.150 and 0.300 mmol·L-1, the apparent cmc of TDBAC decreased from 1.901 to 1.739 mmol·L-1 and 1.584 mmol·L-1, respectively. In TDBAC/AEO-9 aqueous solution, the ultraviolet absorption intensity of TDBAC was enhanced by adding 1∶1 β-cyclodextrin (β-CD) according to the molar amount of TDBAC, with the addition of 0.800 mmol·L-1 β-CD, the ultraviolet absorption intensity of TDBAC increased from 0.259 to 0.270. When the concentrations of AEO-9 increased from 0 to 0.150 or 0.300 mmol·L-1, TDBAC micelles could not be formed in the range of 0.600~2.800 mmol·L-1 in aqueous solutionby adding 1∶1 β-CD. What is more, the interference of AEO-9 on UV Spectrum of TDBAC could be greatly reduced, and the recovery rate of TDBAC in TDBAC/AEO-9 aqueous solution changed from 86.3%~107.5% to 101.9%~103.9%, which showed that the detection accuracy of TDBAC was significantly improved. The results of Job’s experiments showed that TDBAC/AEO-9 inclusion should be formed with the molar ratio of 1∶1 in an aqueous solution. The results of FTIR andTG-DSC showed that TDBAC molecules were more likely to form inclusion complexes with β-CD rather than micelles in aqueous solution, which exhibited that the interference of AEO-9 on quantitative determination of TDBAC could be significantly reduced because of the formation of TDBAC/β-CD inclusion in TDBAC/AEO-9 aqueous solutions.
[1] Solomonov A V, Kochergin B A, Romanova G N, et al. Russian Chemical Bulletin, 2018, 67(7): 1287.
[2] Wagay T A, Shergujri M A, Askari H. Journal of Dispersion Science and Technology, 2020, doi: 10.1080/01932691.2019.1710186.
[3] Owiwe M T, Ayyad A H, Takrori F M. Colloid and Polymer Science, 2020, 298(9): 1197.
[4] Carrillo M, Siebe C, Dalkmann P, et al. Journal of Soils and Sediments, 2016, 16(9): 2186.
[5] Denisova S A, Kudryashova O S, Elokhov A M, et al. Russian Journal of Inorganic Chemistry, 2019, 64(6): 810.
[6] Song X, Cvelbar U, Strazar P, et al. ACS Applied Materials and Interfaces, 2020, 12(1): 298.
[7] Wu H Y, Shih C L, Lee T, et al. Talanta, 2019, 194: 778.
[8] Ramcharan T, Bissessur A. Journal of Surfactants and Detergents, 2016, 19(1): 209.
[9] Salem J K, El-Nahhal I M, Salama S F. Chemical Physics Letters, 2019, 730: 445.
[10] Váňová J, Vav( rˇ )íková M, Smetanová Z, et al. Chromatographia, 2019, 82(4): 733.
[11] Ziolkowska D, Syrotynska I, Shyichuk A, et al. Molecular Crystals and Liquid Crystals, 2018, 672(1): 142.
[12] Mohd N I, Raoov M, Mohamad S, et al. RSC Advances, 2018, 8(24): 13556.
[13] SHI Dong-po, HUANG Hong-yi, YIN Xian-qing, et al(石东坡, 黄弘毅, 尹先清, 等). Spectroscopy and Spectral Analysis(光谱学与光谱分析), 2019,39(6): 1812.
[14] Celebioglu A, Yildiz Z I, Uyar T. International Journal of Food Science & Technology, 2018, 53(1): 112.
[15] Li M, Li F, Wang T, et al. Journal of Biomaterials Applications, 2020, 34(6): 851.