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Titanium (III) cation selective electrode based on synthesized tris(2pyridyl) methylamine ionophore and its application in water samples

机译:合成的三(2-吡啶基)甲胺离子基钛(III)阳离子选择电极及其在水样中的应用

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摘要

The introduction of low detection limit ion selective electrodes (ISEs) may well pave the way for the determination of trace targets of cationic compounds. This research focuses on the detection of titanium (III) cation using a new PVC-membrane sensor based on synthesized tris(2pyridyl) methylamine (tpm) ionophore. The application and validation of the proposed sensor was done using potentiometric titration, inductively coupled plasma atomic emission spectrometry (ICP-AES), and atomic absorption spectrometry (AAS). The membrane sensor exhibited a Nernstian response to the titanium (III) cation over a concentration range of 1.0 × 10−6–1.0 × 10−2 M and pH range from 1–2.5. The Nernstian slope, the lower of detection (LOD), and the response time (t95%) of the proposed sensor were 29.17 ± 0.24 mV/dec, 7.9 × 10−7 M, and 20 s, respectively. The direct determination of 4–39 μg/ml of titanium (III) standard solution showed an average recovery of 94.60 and a mean relative standard deviation of 1.8 at 100.0 μg/ml. Finally, the utilization of the electrodes as end-point indicators for potentiometric titration with EDTA solutions for titanium (III) sensor was successfully carried out.
机译:低检测限离子选择性电极(ISE)的引入可能为确定阳离子化合物的痕量目标铺平了道路。这项研究的重点是使用一种基于合成的三(2-吡啶基)甲胺(tpm)离子载体的新型PVC膜传感器检测钛(III)阳离子。使用电位滴定法,电感耦合等离子体原子发射光谱法(ICP-AES)和原子吸收光谱法(AAS)对提出的传感器进行了应用和验证。膜传感器在1.0×10 -6 –1.0×10 -2 M的pH范围从1的浓度范围内,对钛(III)阳离子表现出能斯特响应。 –2.5。拟议传感器的能斯特斜率,检测下限(LOD)和响应时间(t95%)分别为29.17±0.24 mV / dec,7.9×10-7 M和20 s。钛(III)标准溶液的直接测定为4-39μg/ ml,在100.0μg/ ml处的平均回收率为94.60,平均相对标准偏差为1.8。最后,成功地利用电极作为用于钛(III)传感器的EDTA溶液进行电位滴定的终点指示剂。

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