摘要
在碱性条件下，Ｍｎ（Ⅱ）与铍试剂Ⅱ形成１：２的荧光络合物，其荧光峰为λｅｘ／λｅｍ＝ ３６７／４６７（ｎｍ），表面活性剂十二烷基苯磺酸钠（ＳＤＢＳ）对体系具有强烈增敏作用，基于此建立了痕量锰的测定方法。本文研究了测定的最佳条件，即０．０１％铍试剂Ⅱ４．０ｍＬ，０．１ｍｏｌ／Ｌ ＮａＯＨ ６．０ｍＬ，１％ＳＤＢＳ ４．０ｍＬ，反应温度为９０℃ ；时间１０ｍｉｎ，线性范围为０～１６０μｇ／Ｌ， 回归方程Ｘ（μｇ／Ｌ）＝２．７７６△Ｆ－３．６８４，检测下限为０．１５μｇ／Ｌ，此方法用于实际样品的测定，结果令人满意。
In NaOH medium, Mn(Ⅱ) and berryllon Ⅱ react to form a 1: 2 complex whose peak is at λex/λex=367/467 (nm). Sodium dodecyl benzene sulfonate (SDBS) can increase the fluorescence intensity of the system greatly. A fluorimetric method has been developed for the determination of trace Mn (Ⅱ) with berryllon Ⅱ. The experimental conditions were 0. 01 % berryllon 4. 0 mL, 0. 1 mol/L NaOH 6. 0 ml, 1% SDBS 4. 0 mL, temperature 90℃, reaction time 10 min. The linear range is 0-160 μg/L, the regression equation is X(μg/L) =2. 776 △F-3. 684, and the detection limit is 0. 15 μg/L. This method has been successful- ly applied to the determination of Mn(Ⅱ) in real samples.
出处
《分析化学》
SCIE
EI
CAS
CSCD
北大核心
1997年第5期567-569,共3页
Chinese Journal of Analytical Chemistry
基金
江西省自然科学基金
南昌大学基础理论基金项目
关键词
铍
锰
十二烷基
苯磺酸钠
荧光法
痕量分析
增敏
Berryllon Ⅱ, manganese (Ⅱ), sodium dodecyl benzene sulfonate, fluorimetry
