吲哚-3-丁酸无保护流体室温燐光和胶束增稳室温燐光性质的比较

仔细研究了吲哚-3-丁酸(IBA)的无保护流体室温燐光(NP-RTP)及以高分子分散剂聚乙二醇-200，聚乙二醇-400和非离子表面活性剂Tween-20，Tween-40, Tween-80，Tween-85，Brij35和乳化剂OP为介质的流体室温燐光性质。表面活性剂和高分子分散剂能抑制IBA燐光猝灭，使其具有更低的检出限，同时也使燐光强度-激发光照射时间曲线发生改变，但不影响IBA燐光光谱特性。无论是否存在表面活性剂或高分子分散剂，TlNO₃都不能诱导IBA产生燐光，KI却能诱导其产生强烈燐光。用于强化水样和土壤样品中IBA的测定，回收率95.2%～104%，相对标准偏差2.4%～4.0%。

Comparison of Non-Protected Fluid Room Temperature Phosphorescence and Micellar-Stabilized Room Temperature Phosphorescence Properties of Indole-3-Butyric Acid

For indole-3-butyric acid (IBA), the non-protected fluid room temperature phosphorescence (NP-RTP) and the fluid room temperature phosphorescence with polymeric dispersant polyethyleneglycol-200 (PEG-200), PEG-400 or non-ionic surfactant Tween-20, Tween-40, Tween-80, Tween-85, Brij35 and emulsifier OP as a medium have been studied in detail. When the surfactants or polymeric dispersants were added to the NP-RTP system, the profile of RTP spectrum was not changed, but the RTP intensity and the pre-irradiation time required to attain a stable RTP signal were increased. Whether the surfactants or polymeric dispersants were added to the system or not, no RTP signal was observed when TlNO 3 was used as a heavy atom perturber (HAP), but intense RTP emissions were observed when KI was present as HAP. Recoveries of 95.2%-104% with relative standard deviations of 2.4%-4.0% were obtained in spiked water and soil samples.