Abstract The article reports on the generation of Ru-morin nanocomposites using a simple methodology in presence and in absence of γ-irradiation. The nanocomposites were characterized using several techniques including, N2 adsorption-desorption, Brunauer−Emmett−Teller (BET) method, transmission electron microscopy (TEM), Fourier transform infra-red (FTIR) spectroscopy, powder X-ray diffractometric (XRD) technique, dynamic light scattering (DLS) and X-ray photoelectron spectroscopic (XPS) methods. The results revealed the production of comparatively smaller sized particles with smaller pores when prepared in presence of energetic γ-irradiation. The irradiated nanocomposite was found to be an eligible candidate for analytical sensing of Ce(IV), Ce(III) and Dy(III) out of a set of different lanthanoids. The lowest values of limit of detection (LOD) out of all the pH conditions for Ce(IV), Ce(III) and Dy(III) were 0.09 μM (at pH 12), 0.08 μM (at pH 12) and 5.37 μM (at pH 2) respectively using absorption spectroscopy. The LOD of Ce(IV) at pH 7 was found to be 0.35 μM by fluorescence spectroscopic method. It is established that the sensing is a pH dependent phenomenon which enables a selective and mutually exclusive sensing of these three lanthanoids individually. The study was also extended towards two environmental samples viz., tap water and ground water with significant recovery of Ce(IV), Ce(III) and Dy(III) from tap water and Ce(IV) and Dy(III) from ground water.

中文翻译：

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γ-辐照对用于痕量检测 Ce(IV)、Ce(III) 和 Dy(III) 的钌-morin 纳米复合材料的影响

摘要 本文报道了在存在和不存在 γ 辐射的情况下使用简单方法生成 Ru-morin 纳米复合材料的情况。使用多种技术表征纳米复合材料，包括 N2 吸附-解吸、Brunauer-Emmett-Teller (BET) 方法、透射电子显微镜 (TEM)、傅里叶变换红外 (FTIR) 光谱、粉末 X 射线衍射 (XRD) 技术、动态光散射 (DLS) 和 X 射线光电子能谱 (XPS) 方法。结果表明，当在高能 γ 辐射存在下制备时，产生了具有较小孔隙的相对较小尺寸的颗粒。发现经辐照的纳米复合材料是一组不同镧系元素中 Ce(IV)、Ce(III) 和 Dy(III) 的分析传感的合格候选物。Ce(IV)、Ce(III) 和 Dy(III) 在所有 pH 条件下的最低检测限 (LOD) 为 0.09 μM（pH 12）、0.08 μM（pH 12）和 5.37 μM (在 pH 2) 分别使用吸收光谱。通过荧光光谱法发现，Ce(IV) 在 pH 7 时的 LOD 为 0.35 μM。确定传感是一种依赖于 pH 值的现象，它能够分别对这三种镧系元素进行选择性和互斥的传感。该研究还扩展到两个环境样品，即自来水和地下水，从自来水中显着回收 Ce(IV)、Ce(III) 和 Dy(III) 以及从地下水中显着回收 Ce(IV) 和 Dy(III)水。通过荧光光谱法发现，Ce(IV) 在 pH 7 时的 LOD 为 0.35 μM。确定传感是一种依赖于 pH 值的现象，它能够分别对这三种镧系元素进行选择性和互斥的传感。该研究还扩展到两个环境样品，即自来水和地下水，从自来水中显着回收 Ce(IV)、Ce(III) 和 Dy(III) 以及从地下水中显着回收 Ce(IV) 和 Dy(III)水。通过荧光光谱法发现，Ce(IV) 在 pH 7 时的 LOD 为 0.35 μM。确定传感是一种依赖于 pH 值的现象，它能够分别对这三种镧系元素进行选择性和互斥的传感。该研究还扩展到两个环境样品，即自来水和地下水，从自来水中显着回收 Ce(IV)、Ce(III) 和 Dy(III) 以及从地下水中显着回收 Ce(IV) 和 Dy(III)水。