A simple method for the determination of benzoic acid based on room temperature phosphorescence of 1-bromopyrene/gamma-cyclodextrin complex in water

作者：Wang, Jinping; Guo, Xiangfeng^*; Jia, Lihua^*

来源：Talanta, 2017, 162: 423-427.

DOI：10.1016/j.talanta.2016.10.070

• Room temperature phosphorescence
• Benzoic acid
• 1-Bromopyrene

The addition of benzoic acid (BA) to an aqueous solution of 1-bromopyrene (1-BrPy) and gamma-cyclodextrin (gamma-CD) was found to form a ternary 1-BrPy/gamma-CD/BA inclusion complex that exhibited strong and stable room temperature phosphorescence (RTP) without deoxygenation. The effects of several different factors on the RTP emission from the inclusion complex were subsequently investigated. A good linear relationship between the RTP intensity and the concentration of BA over the range of 0-0.70 mM was identified (R-2=0.9917), and the detection limit was determined to be 0.68 mu m. Application of the new method was successfully proved for the detection of BA in various beverages with satisfactory results.

• 出版日期2017-1-1
• 单位黑龙江大学; 齐齐哈尔大学