摘要
合成了新荧光试剂苯偶氮水杨醛异烟酰腙（BSIH）.研究了试剂与铜的荧光反应新体系的最适宜条件.在pH=9.0的乙醇/水（3.5：6.5,V/V）溶液中,该试剂与铜离子形成稳定的络合物,组成比为1：1（金属：试剂）,λex/em=244.8/423.0nm。所建立铜的荧光分析方法的线性范围为0.5～100.0μg/L,检出限为0.20μg/L,方法成功的应用于矿泉水中铜的测定.
A new fluorescent reagent, benzeneazosalicyladehyde- isonicotinyl- hydrazone （BSIH）, was synthesized and the fluorescent reaction of this reagent with copper ions was studied in detail. Based on this chelation reaction, a spectrofluorimetric method was developed for the determination of copper in an ethanol-water （3. 5：6. 5,V/V） medium at pH 9. 0. Under these conditions the Cu2＋-BSIH complex has excitation and emission maxima at 244. 8nm and 423. 0nm respectively. The molar ratio of copper to reagent is 1： 1. The linear range of the method is from 0. 5 to 120. 0μg/L and the detection limit is 0. 2μg/L of copper. The method has been used to determine copper trace in mineral water and water samples with satisfactory results.
出处
《陇东学院学报（自然科学版）》
2007年第1期45-47,共3页
Journal of Longdong University:Natural Science Edition
关键词
苯偶氮水杨醛异烟酰腙
铜
荧光分析
benzeneazosalicyladehyde-isonicotinyl-hydrazone
copper
spectrofluorimetry
