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Europium(III) ion detection in water by a new luminescent optical fibre sensor

机译:铕(III)通过新的发光光纤传感器在水中检测

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A new europium(III) luminescent optical fibre sensor based on a tridentate bis(phosphinic amide)-phosphine oxide PhPO(C_6H_4POPhN(CH(CH_3)_2)_2)_2 is described. The ligand was successfully immobilized on PVC membrane on optical fibre by dip coating technique. The reaction between europium(III) ion and ligand produced a strong luminescent complex of stoichiometry [1:2], which possessed a maximum emission peak at 612 nm. The sensor luminescence response showed an exponential behavior versus logarithmic concentration of europium(III) ions (10~(-8) - 10~(-3) M) in aqueous solution with a correlation factor of R~2 = 0.9918, and an acceptable response time (t_(90)-t_(10)) of 92 seconds. This optode is the first luminescent optical fibre sensor for detecting europium(III) ions in water.
机译:描述了一种基于三齿双(膦酰胺酰胺) - 氧化膦PHPO(C_6H_4POPHN(CH(CH_3)_2 _2)_2的新型铕(III)发光光纤传感器。 通过浸涂技术在光纤上成功地固定在PVC膜上的固定体。 铕(III)离子和配体之间的反应产生了化学计量[1:2]的强发光络合物,其在612nm处具有最大排放峰。 传感器发光响应显示了水溶液中铕(III)离子(III)离子(III)离子(III)离子(10〜(-8) - 10〜(-3)m)的指数行为,具有R〜2 = 0.9918的相关因子,以及可接受的 响应时间(t_(90)-t_(10))为92秒。 该光电极是第一发光光纤传感器,用于检测水中的铕(III)离子。

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