Determination of trace copper by solid substrate-room temperature phosphorescence quenching method based on lead carboxymethyl cellulose [Pb(CMC)(2)] particles containing luminescent salicyl fluorones molecules

作者：Liu Jia Ming^*; Lin Xuan; Xu Shan Shan; Lu Qiao Mei; Zeng Li Qing; Lin Shao Qin

来源：Spectroscopy Letters, 2006, 39(4): 311-320.

DOI：10.1080/00387010600779179

• determination of copper
• quenching method
• solid substrate-room temperature phosphorescence

Luminescent particles of lead carboxymethyl cellulose [Pb(CMC)(2)] that contain luminescent salicyl fluorones (SAF) {[Pb(CMC)(2)]-SAF} were synthesized by sol-gel method, using sodium carboxymethyl cellulose (NaCMC) as precursor and Pb2+ as precipitator. [Pb(CMC)(2)]-SAF can emit intense and stable solid substrate room temperature phosphorescence (SS-RTP) on filter paper. EDTA ( ethylenediaminetetraacetic acid) can chelate the Pb2+ in [Pb(CMC)(2)]-SAF, causing it to decompose into aqueous soluble components PbY2-, CMC-, and SAF, and these components can react with Cu2+ to form [Cu(CMC)(2)]s-SAF, causing decrease of phosphorescence intensity. Based on the facts above, a new method for the determination of trace mercury by SS-RTP quenching method was established. This method has been applied to the determination of trace copper in human hair and tea samples with satisfactory results.

• 出版日期2006
• 单位闽南师范大学; 福建教育学院