摘要
将1，8-萘二胺和苯并噻唑类试剂结合，并引入杂环三氮烯结构，合成了新荧光试剂1，8-双（2-苯并噻唑重氮氨基）萘（BBTANP），其结构经红外光谱、核磁共振谱和元素分析证实．研究结果表明，在碱性介质中，该试剂与Cu（Ⅱ）形成1：1的络合物，并在λex／λem=362nm／459nm处产生荧光增强作用．据此建立了BBTANP测定Cu（Ⅱ）的新型荧光分析法，该方法的线性范围为8．0×10^-7～1．0×10^-5mol／L，检测限为1．3×10^-7mol／L．将其应用于水样中Cu（Ⅱ）的测定，结果令人满意．
With the aid of combining 1,8-naphthalene with benthiazole through bis-triazene group, a new fluorescent reagent 1,8-his （2-benthiazolydiazoamino） naphthalene （BBTANP） was synthesized and confirmed by means of elemental analysis, ^1H NMR and infrared spectra. A chelate complex was formed by the reaction between BBTANP and Cu （ Ⅱ ） in a weak basic medium, which resulted in fluorescence enhancement. The possible response mechanism of BBTANP to Cu （ Ⅱ ） was discussed. The reaction showed a high selectivity and a high sensitivity for Cu （ Ⅱ ）. A new spectrofluorimetric method for the determination of trace Cu （ Ⅱ ） with this reagent was developed. The excitation and emission wavelengths of BBTANP/Cu （ Ⅱ ） system were 362 and 459 nm in a basic medium, respectively. Under the optimal conditions, a linear response to copper was obtained in the concentration range from 8.0 × 10^-7 to 1.0 × 10^-5 mol/L, and the detection limit was 1.3 × 10^-7 mol/L. The method is selective, sensitive and simple. It has been used to determine trace copper in lake water with satisfactory results.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
2008年第8期1560-1563,共4页
Chemical Journal of Chinese Universities
基金
国家自然科学基金(批准号:20575057)
山西省重点学科建设基金(批准号:20045037)资助
