Dy-BPMPHD-CTMAB荧光体系的研究及其分析应用

Study of the Fluorescence System of Dy（Ⅲ）－BPMPHD－CTMAB and Its Analytical Application

本文对Dy－BPMPHD-CTMAB荧光体系进行了研究．研究发现，Dy3+能与BPMPHD和CTMAB形成离子缔合物，并发射出Dy3+的特征荧光峰．Gd3+、Y3+、Lu3+离子能增强体系的荧光强度，产生共发光效应．本文对该共发光体系进行了详细研究，由此提出了快速、灵敏测定痕量稀土Dy3+的新方法，其测定线性范围为1．0×10-7—1．3×10-5mol／L，检出限为2．

The fluorescence system of Dy（Ⅲ）－BPMPHD－CTMAB was studied．It was found that Dy3+ could form an ion association complex with BPMPHD and CTMAB and then emitted the intrinsic fluorescence of Dy3+.The fluorescence intensity of the system could be increased by Gd3+、Y3+、La3+． This is a newly found Co-luminescence system． Based on the Co-luminescence system， a rapid， simple and sensitive method was developed for thedetermination of trace amounts of Dy3+． The results indicated that the fluorescence intensity of the system is a linear relationship with the concentration of Dy3+ in the range of 1．0×10-7-1．3×10-mol／L，thedetection limit（S／N＝2）is 2．0-×10－8mol／L．