四氟硼酸鹽離子液體的熒光及紅外光譜分析
發(fā)布時間：2018-07-16 11:38
【摘要】：實(shí)驗(yàn)用熒光光譜法研究了四氟硼酸N-戊基吡啶、四氟硼酸N-己基吡啶、四氟硼酸N-庚基吡啶、四氟硼酸N-戊基咪唑和硝酸N-戊基吡啶離子液體(AP-BF_4、HP-BF_4、HEP-BF_4、AMIM-BF_4和APC-NO_3)對十二烷基苯磺酸鈉(SDBS)熒光強(qiáng)度的影響;四氟硼酸N-烷基吡啶離子液體(PP-BF_4、BP-BF_4、AP-BF_4、HP-BF_4、HEP-BF_4和OP-BF_4)對羅丹明B的熒光強(qiáng)度的影響。離子液體對SDBS熒光強(qiáng)度影響由大到小的順序?yàn)?AP-BF_4、HP-BF_4、HEP-BF_4,隨著離子液體烷基鏈的加長,熒光猝滅增強(qiáng),導(dǎo)致SDBS的熒光強(qiáng)度隨之減弱;咪唑環(huán)和四氟硼酸對SDBS熒光強(qiáng)度的影響更顯著;羅丹明B的熒光強(qiáng)度隨著羅丹明B濃度的增大而增大,當(dāng)增大到一定程度,熒光強(qiáng)度反之減小,羅丹明B在離子液體中的熒光效果比在純水中的熒光效果好,但不是很明顯,表明離子液體有輕微的增敏作用。實(shí)驗(yàn)研究了四氟硼酸N-丁基咪唑離子液體(BMIM-BF_4)雙水相萃取熒光法測定維生素B6(VB6)含量,該法可實(shí)際運(yùn)用于痕量測定樣品中VB6含量。實(shí)驗(yàn)考察了對四氟硼酸N-丁基吡啶、四氟硼酸N-戊基吡啶、四氟硼酸N-己基吡啶、四氟硼酸N-庚基吡啶和四氟硼酸N-辛基吡啶離子液體(BP-BF_4、AP-BF_4、HP-BF_4、HEP-BF_4和OP-BF_4)離子液體的紅外光譜定量分析,得到離子液體在不同濃度下的最大吸光度,在最大吸光度繪制了標(biāo)準(zhǔn)工作曲線,采用標(biāo)準(zhǔn)加入法測得了離子液體在乙腈中的回收率,加標(biāo)回收率為98.2%~104.6%。實(shí)驗(yàn)研究了四氟硼酸N-戊基吡啶(AP-BF_4)離子液體在乙醇、水、甲醇和乙腈中的紫外光譜,離子液體的紫外光譜易受到溶劑的極性以及酸堿性的影響,用紫外光譜法定量分析了乙醇、水、甲醇以及乙腈中AP-BF_4的含量。在最大吸收波長處繪制了標(biāo)準(zhǔn)工作曲線。采用標(biāo)準(zhǔn)加入法測得了離子液體在乙醇、水、甲醇以及乙腈中的回收率,加標(biāo)回收率為96.4%~102.2%。
[Abstract]:The fluorescence spectra of N-pentylpyridine tetrafluoroborate, N-hexylpyridine tetrafluoroborborate, N-heptylpyridine tetrafluoroborborate were studied. The effects of N-pentylimidazole tetrafluoroboric acid and N-pentylpyridine nitrate ionic liquids (AP-BF4HP-BF4HP-BF4HP-BF4HP-BF4 and APC-NO3) on the fluorescence intensity of sodium dodecylbenzene sulfonate (SDBS), and the effect of P-BF4BF4HP-BF4HP-BF4HEP-BF4 and OP-BF4 on the fluorescence intensity of rhodamine B (PP-BF4BF4HP-BF4HP-BF4 and OP-BF4). The influence of ionic liquids on the fluorescence intensity of SDBs is in the order of: AP-BF4s, HP-BF4s, HEP-BF4s. With the increase of alkyl chain of ionic liquids, fluorescence quenching increases, which leads to the weakening of fluorescence intensity of SDBs, and the effect of imidazole ring and tetrafluoroboric acid on the fluorescence intensity of SDBs is more obvious. The fluorescence intensity of Rhodamine B increases with the increase of Rhodamine B concentration. When the fluorescence intensity decreases to a certain extent, the fluorescence effect of Rhodamine B in ionic liquids is better than that in pure water, but it is not obvious. The results show that ionic liquids have slight sensitizing effect. The determination of vitamin B _ 6 (VB _ 6) in trace samples by aqueous two-phase extraction fluorescence method with N- Ding Ji imidazole tetrafluoroborate ionic liquid (BMIM-BF4) was studied. The method can be applied to the determination of VB6 in trace samples. The infrared spectroscopic analysis of N- Ding Ji pyridine tetrafluoroborborate, N- pentylpyridine tetrafluoroborborate, N-hexylpyridine tetrafluoroborborate, N-heptylpyridine tetrafluoroborborate and N-octylpyridine tetrafluoroborborate ionic liquid (BP-BF4AP-BF4AP-BF4HP-BF4HP-BF4) ionic liquids were investigated. The maximum absorbance of ionic liquids at different concentrations was obtained, and the standard working curve was drawn at the maximum absorbance. The recovery rate of ionic liquids in acetonitrile was determined by standard addition method, and the recovery rate was 98.2% and 104.6%. The UV spectra of N-pentylpyridine tetrafluoroboric acid (AP-BFST4) ionic liquids in ethanol, water, methanol and acetonitrile were studied experimentally. The UV spectra of ionic liquids were easily affected by the polarity of solvents and the acidity and alkalinity. The content of AP-BF4 in water, methanol and acetonitrile. The standard working curve is drawn at the maximum absorption wavelength. The recoveries of ionic liquids in ethanol, water, methanol and acetonitrile were determined by standard addition method.
【學(xué)位授予單位】：沈陽師范大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：O645.1;O657.3
本文編號：2126269
[Abstract]:The fluorescence spectra of N-pentylpyridine tetrafluoroborate, N-hexylpyridine tetrafluoroborborate, N-heptylpyridine tetrafluoroborborate were studied. The effects of N-pentylimidazole tetrafluoroboric acid and N-pentylpyridine nitrate ionic liquids (AP-BF4HP-BF4HP-BF4HP-BF4HP-BF4 and APC-NO3) on the fluorescence intensity of sodium dodecylbenzene sulfonate (SDBS), and the effect of P-BF4BF4HP-BF4HP-BF4HEP-BF4 and OP-BF4 on the fluorescence intensity of rhodamine B (PP-BF4BF4HP-BF4HP-BF4 and OP-BF4). The influence of ionic liquids on the fluorescence intensity of SDBs is in the order of: AP-BF4s, HP-BF4s, HEP-BF4s. With the increase of alkyl chain of ionic liquids, fluorescence quenching increases, which leads to the weakening of fluorescence intensity of SDBs, and the effect of imidazole ring and tetrafluoroboric acid on the fluorescence intensity of SDBs is more obvious. The fluorescence intensity of Rhodamine B increases with the increase of Rhodamine B concentration. When the fluorescence intensity decreases to a certain extent, the fluorescence effect of Rhodamine B in ionic liquids is better than that in pure water, but it is not obvious. The results show that ionic liquids have slight sensitizing effect. The determination of vitamin B _ 6 (VB _ 6) in trace samples by aqueous two-phase extraction fluorescence method with N- Ding Ji imidazole tetrafluoroborate ionic liquid (BMIM-BF4) was studied. The method can be applied to the determination of VB6 in trace samples. The infrared spectroscopic analysis of N- Ding Ji pyridine tetrafluoroborborate, N- pentylpyridine tetrafluoroborborate, N-hexylpyridine tetrafluoroborborate, N-heptylpyridine tetrafluoroborborate and N-octylpyridine tetrafluoroborborate ionic liquid (BP-BF4AP-BF4AP-BF4HP-BF4HP-BF4) ionic liquids were investigated. The maximum absorbance of ionic liquids at different concentrations was obtained, and the standard working curve was drawn at the maximum absorbance. The recovery rate of ionic liquids in acetonitrile was determined by standard addition method, and the recovery rate was 98.2% and 104.6%. The UV spectra of N-pentylpyridine tetrafluoroboric acid (AP-BFST4) ionic liquids in ethanol, water, methanol and acetonitrile were studied experimentally. The UV spectra of ionic liquids were easily affected by the polarity of solvents and the acidity and alkalinity. The content of AP-BF4 in water, methanol and acetonitrile. The standard working curve is drawn at the maximum absorption wavelength. The recoveries of ionic liquids in ethanol, water, methanol and acetonitrile were determined by standard addition method.
【學(xué)位授予單位】：沈陽師范大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：O645.1;O657.3
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