Ionic liquid(IL),1-butyl-3-methylimdazoliuim chloride,was introduced into the chromazural S-aluminium spectrophotometric system for the first time which involves Triton X-100 as solubilizing agents.The presence of IL ...Ionic liquid(IL),1-butyl-3-methylimdazoliuim chloride,was introduced into the chromazural S-aluminium spectrophotometric system for the first time which involves Triton X-100 as solubilizing agents.The presence of IL resulted in a sensitivity increase of about 50%.Besides,IL also helped to eliminate the spume resulting from surfactant,which usually makes the analysis inconvenient.Molar absorptivity of the proposed system is 1.2×105 L·mol-1 ·cm-1 and maximum absorption wavelength occurred at 616 nm.Based on 3σ criterion,detection limit of 0.0016μg·mL-1 was obtained and Beer’s law was obeyed in the range of 0.002 μg·mL-1-0.2 μg·mL-1.The proposed method has been successfully applied to the determination of Al in tap water and food samples,with analytical results in good agreement with those by ICP-OES.The results of this study revealled that IL might be a potential sensitizer for spectrophotometric methods involving micellar media.展开更多
This study investigates the effect FeCl3 on the radiation stability of the ionic liquid,1-butyl-3-methylimidazolium chloride(BmimCl) over a wide dose range of 0 to 1000 kGy under γ-ray radiation.The ionic liquid spec...This study investigates the effect FeCl3 on the radiation stability of the ionic liquid,1-butyl-3-methylimidazolium chloride(BmimCl) over a wide dose range of 0 to 1000 kGy under γ-ray radiation.The ionic liquid species,BmimFeCl4,was formed by adding FeCl3 into BmimCl.The results showed that the presence of FeCl4-significantly improved the radiation resistance of BmimCl,wherein the effect was more pronounced at higher FeCl4-content.Meanwhile,under irradiation,Fe(II) was generated from Fe(III),which was reduced by solvated electron.In addition,the concentration of Fe(II) increased with low level of absorbed dose,but leveled off at higher doses.Moreover,the radiation yield of the solvated electrons of BmimCl was further estimated at approximately 0.358±0.01 μmol/J in BmimCl-7 mol% FeCl3 system.展开更多
文摘Ionic liquid(IL),1-butyl-3-methylimdazoliuim chloride,was introduced into the chromazural S-aluminium spectrophotometric system for the first time which involves Triton X-100 as solubilizing agents.The presence of IL resulted in a sensitivity increase of about 50%.Besides,IL also helped to eliminate the spume resulting from surfactant,which usually makes the analysis inconvenient.Molar absorptivity of the proposed system is 1.2×105 L·mol-1 ·cm-1 and maximum absorption wavelength occurred at 616 nm.Based on 3σ criterion,detection limit of 0.0016μg·mL-1 was obtained and Beer’s law was obeyed in the range of 0.002 μg·mL-1-0.2 μg·mL-1.The proposed method has been successfully applied to the determination of Al in tap water and food samples,with analytical results in good agreement with those by ICP-OES.The results of this study revealled that IL might be a potential sensitizer for spectrophotometric methods involving micellar media.
基金supported by the National Natural Science Foundation of China (20973192,11079007)
文摘This study investigates the effect FeCl3 on the radiation stability of the ionic liquid,1-butyl-3-methylimidazolium chloride(BmimCl) over a wide dose range of 0 to 1000 kGy under γ-ray radiation.The ionic liquid species,BmimFeCl4,was formed by adding FeCl3 into BmimCl.The results showed that the presence of FeCl4-significantly improved the radiation resistance of BmimCl,wherein the effect was more pronounced at higher FeCl4-content.Meanwhile,under irradiation,Fe(II) was generated from Fe(III),which was reduced by solvated electron.In addition,the concentration of Fe(II) increased with low level of absorbed dose,but leveled off at higher doses.Moreover,the radiation yield of the solvated electrons of BmimCl was further estimated at approximately 0.358±0.01 μmol/J in BmimCl-7 mol% FeCl3 system.
