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α-萘氧乙酸和β-萘氧乙酸无保护流体室温磷光性质和有机溶剂的影响比较
Comparison of Non-protected Fluid Room Temperature Phosphorescence Properties of α-Naphthyloxyacetic Acid and β-Naphthyloxyacetic Acid
【摘要】 对比研究了α- 萘氧乙酸(α- NOA) 和β- 萘氧乙酸(β- NOA) 的流体室温磷光性质及有机溶剂的影响. 以KI或TlNO3 作重原子微扰剂, Na2SO3 作除氧剂, 两者均可在无保护性介质存在下发射强而稳定的室温磷光信号, 可用于分析测定. 不同有机溶剂的引入, 不仅对体系RTP强度和RTP强度稳定所需光诱导时间的影响不同, 且对重原子微扰剂的选择亦有一定影响. 相同条件下β- NOA的磷光强度比α- NOA 的低, 但检测限相当, 且受有机溶剂的影响比较小.
【Abstract】 A comparative study of properties of non-protected room temperature phosphorescence(NP-RTP) and effects of organic solvents for α-naphthyloxyacetic(α-NOA) and β-naphthyloxyacetic acid(β-NOA) has been carried out. Both α-NOA and β-NOA aqueous solutions can emit strong and stable RTP signal in the absence of a protecting medium by addition of KI or TlNO 3 as heavy atom pertuber(HAP) and Na 2 SO 3 as deoxygenator. A good linearity between the RTP intensity and the concentration of α-NOA or β-NOA was obtained with a detection of 10 nmol/L or 12 nmol/L respectively. The kind and amount of organic solvent added to the luminescent system not only affect the RTP intensity and the pre-irradiation time required to attain a stable RTP signal,but also the selection of HAP. Under the same conditions,the RTP intensity of the system using TlNO 3 as HAP is much stronger than that of the system using KI as HAP,but the detection limits of both systems for analytical determination are comparable. The RTP intensity of β-NOA is lower than that of α-NOA,but the influence of organic solvent on its RTP emission is also less.
【Key words】 naphthyloxyacetic acid; β-naphthyloxyacetic acid; non-protected fluid room temperature phosphorescence; organic solvent; heavy atom pertuber;
- 【文献出处】 福州大学学报(自然科学版) ,JOURNAL OF FUZHOU UNIVERSITY(NATURAL SCIENCES EDTION) , 编辑部邮箱 ,1999年S1期
- 【分类号】O656.31
- 【下载频次】68