Brest University, UMR CNRS 6521 CEMCA, Université Européenne de Bretagne, 6 av. Le Gorgeu, 29285 Brest cedex 3, France.
J Fluoresc. 2011 May;21(3):843-50. doi: 10.1007/s10895-009-0583-7. Epub 2010 Jan 19.
This work presents spectroscopic properties of some Endocrine Disrupting Compounds (EDCs), frequently found in food and in natural water. Studied molecules belong to the groups of phenolic and phthalate EDCs. In a first part, we have examined their absorption and fluorescence properties. Fluorescence emission wavelengths are about 300 nm for phenolic compounds and 360 nm for phtalate compounds; main excitation wavelengths being comprised between 210 nm and 230 nm. Fluorescence lifetimes measured are short (about 4 ns) and the fluorescence quantum yield has been determined. In a second part, to avoid the time consuming solvent extraction step, an analytical application to evaluate the performance of a direct analysis by laser induced fluorescence spectroscopy of ECDs traces in tap water and in raw water is presented. Good detection limits have been obtained, i.e.: 0.35 µg.L(-1) of chlorophenol in tap water, which are always lower than the reported Predictive Non Efficient Concentration (PNEC).
本工作介绍了一些内分泌干扰化合物（EDCs）的光谱性质，这些化合物通常存在于食物和天然水中。所研究的分子属于酚类和邻苯二甲酸酯类 EDCs 组。在第一部分中，我们检查了它们的吸收和荧光性质。酚类化合物的荧光发射波长约为 300nm，邻苯二甲酸酯化合物的荧光发射波长约为 360nm；主要激发波长在 210nm 至 230nm 之间。测量的荧光寿命很短（约 4ns），并确定了荧光量子产率。在第二部分，为了避免耗时的溶剂萃取步骤，提出了一种分析应用，用于评估直接分析激光诱导荧光光谱法在自来水和原水中痕量 ECDs 的性能。已获得良好的检测限，即在自来水中检测到 0.35µg·L(-1)的氯苯酚，这些检测限始终低于报道的预测非有效浓度（PNEC）。
