Abstract Cr2O72− is one of the most toxic ions which leads to skin allergies, kidney disease and cancer. Thus, highly efficient and sensitive detection of Cr2O72− has drawn wide attentions. In this work, we developed a wide range and high accuracy sensor basing on Allyltriethoxysilane modified nanopipette for the ultra-trace dichromate (Cr2O72−) ions' detection in an aqueous solution. The prepared Cr2O72− sensor showed a wide detection range from 10^(−16) M to 10^(−4) M and with an ultra-low detection limit down to 1.296 × 10^(−16) M.

中文翻译：

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烯丙基三乙氧基硅烷改性纳米通道对重铬酸盐 (Cr2O72−) 的检测和 FEM 研究

摘要 Cr2O72− 是毒性最强的离子之一，会导致皮肤过敏、肾脏疾病和癌症。因此，对Cr2O72-的高效灵敏检测引起了广泛关注。在这项工作中，我们开发了一种基于烯丙基三乙氧基硅烷改性纳米移液管的宽范围和高精度传感器，用于检测水溶液中的超痕量重铬酸盐 (Cr2O72−) 离子。制备的 Cr2O72− 传感器显示出从 10^(-16) M 到 10^(-4) M 的宽检测范围，并具有低至 1.296 × 10^(-16) M 的超低检测限。