An electrochemically active tin telluride (SnTe) decorated graphene oxide (GO) (SnTe@GO) nanocomposite has been synthesized through simple experimental method and used the same for surface modification of glassy carbon electrode, thus developed a new efficient SnTe@GO/GCE which in turn has been demonstrated as a sensor for identification and quantification of nitrite species in water samples. Common analytical techniques are employed and established the physiochemical properties of SnTe@GO nanocomposite. The electrocatalytic activity of SnTe@GO/GCE has been examined towards sensing and quantification of nitrite through Cyclic Voltammetry and Differential Pulse Voltammetry techniques. The obtained results revel that SnTe@GO/GCE exhibited high sensitivity with wide linear range such as 9.8-162 mM and detection limit found to be 0.079 µM. In addition, in order to inspect the real time application of SnTe@GO/GCE, it is also employed and determined the concentration of nitrite in drinking water, pond water and well water samples which are collected from Rayapuram, Muttukadu and Guindy during the specific period. The LOD observed for drinking water collected from Rayapuram, Chennai are 1.63 μM, pond water collected from Muttukadu, Kanchipuram 2.5 μM, and the well water collected from Guindy, Chennai are 1.25 μM, and thus proves that the newly designed SnTe@GO/GCE is an excellent sensor for nitrite species even in real water sample analysis.

中文翻译：

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SnTe @ GO修饰玻碳电极对水中亚硝酸盐污染的电化学分析

通过简单的实验方法合成了一种电化学活性的碲化锡装饰的氧化石墨烯（SnTe @ GO）纳米复合材料，并将其用于玻璃碳电极的表面改性，从而开发了一种新型的高效SnTe @ GO / GCE。反过来，它已被证明是一种用于鉴定和定量水样品中亚硝酸盐物种的传感器。采用常用的分析技术，建立了SnTe @ GO纳米复合材料的理化性质。通过循环伏安法和微分脉冲伏安法研究了SnTe @ GO / GCE的电催化活性对亚硝酸盐的感测和定量。获得的结果表明，SnTe @ GO / GCE在9.8-162 mM的宽线性范围内显示出高灵敏度，并且检测极限为0.079 µM。此外，为了检查SnTe @ GO / GCE的实时应用，还使用并确定了特定时期从Rayapuram，Muttukadu和Guindy收集的饮用水，池塘水和井水样品中的亚硝酸盐浓度。从钦奈的Rayapuram收集的饮用水的LOD为1.63μM，从Kanchipuram的Muttukadu收集的池塘水为2.5μM，从钦奈的Guindy收集的井水为1.25μM，因此证明了新设计的SnTe @ GO / GCE即使在真实的水样分析中，也是亚硝酸盐物种的出色传感器。特定时期的Muttukadu和Guindy。从钦奈的Rayapuram收集的饮用水的LOD为1.63μM，从Kanchipuram的Muttukadu收集的池塘水为2.5μM，从钦奈的Guindy收集的井水为1.25μM，因此证明了新设计的SnTe @ GO / GCE即使在真实的水样分析中，也是亚硝酸盐物种的出色传感器。特定时期的Muttukadu和Guindy。从钦奈的Rayapuram收集的饮用水的LOD为1.63μM，从Kanchipuram的Muttukadu收集的池塘水为2.5μM，从钦奈的Guindy收集的井水为1.25μM，因此证明了新设计的SnTe @ GO / GCE即使在真实的水样分析中，也是亚硝酸盐物种的出色传感器。