液滴化学传感室温磷光法测定微量苏丹Ⅲ
Room Temperature Phosphorescence Determination of Traces of SudanⅢ by Dropping Phosphorescence Chemosensing Technique
摘 要
在室温和微量环己烷存在下,β-环糊精能诱导溴代菲产生出强烈的磷光发射.微量的苏丹Ⅲ能显著猝灭溴代菲的室温磷光.利用液滴磷光传感技术考察了苏丹Ⅲ的浓度与反应体系磷光强度之间的关系,并对试验条件进行了优化,提出了液滴化学传感室温磷光法测定微量苏丹Ⅲ的方法.试验结果显示测定苏丹Ⅲ的线性范围为2.0×10-7~6.0×10-5mol·L-1.方法的检出限(3S/N)为0.1 mg·L-1.
室温磷光
溴代菲
苏丹Ⅲ
Phosphorescence determination
Room temperature phosphorescence
9-Bromophenanthrene
SudanⅢ
Abstract
It was found that in the presence of microamounts of cyclohexane and under room temperature,strong phoshorescence was emitted by 9-bromophenanthrene (BrP) through induction of β-cyclodextrin (β-CD),and the phosphorescence was quenched obviously by the addition of trace amount of SudanⅢ.On the basis of the above mentioned phenomenon,and applying the dropping phosphorescence chemosensing technique simultaneously,a new method for determination of traces of SudanⅢ was proposed.Conditions of the phosphorescence reaction and working parameters of the phosphoro-spectrophotometer were studied and optimized.Phosphorescence intensity of the reaction mixutre (containing BrP,cyclohexane and β-CD,as well as the analyte,SudanⅢ) in the dropping liquid was measured at the wavelengths of 274 nm (λex) and 489 nm (λem).Linearity range for determination of SudanⅢ was obtained in the range of 2.0×10-7-6.0×10-5mol·L-1,and the detection limit (3S/N) found was 0.1 mg·L-1.
中图分类号 O657.3
所属栏目 试验与研究
基金项目 国家自然科学基金(20575057);山西省自然科学基金(20051031)
收稿日期 2009/4/3
修改稿日期
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备注李仁军(1979-),男,江西南昌人,硕士研究生,主要从事光分析化学研究.
引用该论文: LI Ren-jun,LIANG Wen-juan,BAI Yun-feng,CHEN Ze-zhong,FENG Feng. Room Temperature Phosphorescence Determination of Traces of SudanⅢ by Dropping Phosphorescence Chemosensing Technique[J]. Physical Testing and Chemical Analysis part B:Chemical Analysis, 2010, 46(1): 1～4
李仁军,梁文娟,白云峰,陈泽忠,冯锋. 液滴化学传感室温磷光法测定微量苏丹Ⅲ[J]. 理化检验－化学分册, 2010, 46(1): 1～4
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【3】CORNET V,GOVAERT Y,MOENS G,et al.Development of a fast analytical method for the determination of sudan dyes in chili- and curry-containing foodstuffs by high-performance liquid chromatography-photodiode array detection[J].J Agric Food Chem,2006,54(3):639-641．
【4】GB/T 19681-2005食品中苏丹红染料的检测方法高效液相色谱法[S]．
【5】WU Li-ping,LI Yuan-fang,HUANG Cheng-zhi,et al.Visual detection of sudan dyes based on the plasmon resonance light scattering signals of silver nanoparticles[J].Anal Chem,2006,78(15):5570-5572．
【6】CALBIAN I F,CARERI M,ELVIRI L,et al.Accurate mass measurements for the confirmation of sudan azo-dyes in hot chilli products by capillary liquid chromatography-electrospray tandem quadrupole orthogonal-acceleration time of flight mass spectrometry[J].J Chromatogr A,2004,1058:127-129．
【7】MONTSERRAT R,MARIA J,MARTA E.Room-temperature phosphorescent palladium porphine probe for DNA determination[J].Anal Chem,1997,69(13):2406-2409．
【8】刘佳铭,付艳.异硫氰酸荧光素标记抗体的固体基质室温磷光性质研究[J].高等学校化学学报,2001,22(10):1645-1649．
【9】PULGARN M,MOLINA A A,PARDO A.Determination of nafcillin by room temperature phosphorescence[J].Anal Chim Acta,2000,423(1):85-88．
【10】鹿贞彬,黄高凌,朱亚先,等.环己烷存在下β-环糊精诱导西维因室温磷光[J].分析测试学报,2005,24(4):21-23．
【11】FENG Feng,WANG Ke-ming,CHEN Ze-zhong,et al.Flow injection renewable drops spectrofluorimetry for sequential determination of Vitamins B1,B2 and B6[J].Anal Chim Acta,2004,527(2):187-190．
【12】冯锋,王柯敏,杨荣华,等.基于汞离子作用的硫胺素液滴光化学传感器的研究[J].高等学校化学学报,2003,24(12):2189-2190．
【13】董川,冯小花,李俊芬,等.环糊精诱导室温磷光发光机理研究进展[J].分析科学学报,2001,17(1):62-64．
【14】WEI Yan-sheng,JIN Wei-jun,ZHU Ruo-hua,et al.Determination of the pesticide carbaryl by chemical deoxygenation micellar-stabilized room temperature phosphorescence[J].Talanta,1994,41:1617-1619．
【15】JIN Wei-jun,WEI Yan-sheng,XU Ai-wu,et al.Cyclodextrin induced room temperature phosphorescence of some polyaromatic hydrocarbons and nitrogen heterocycles in the presence of cyclohexane[J].Spectrochimica Acta,1994,50A:1769-1772．
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