Abstract

A method for determination of mercury(II) using polyurethane foam modified on the surface with silver triangular nanoplates that have an average edge length of 52 nm and thickness of 4 nm is developed. The method is based on the oxidation of silver nanoplates with mercury(II). This process is accompanied by a decrease in the surface plasmon resonance band of nanoparticles which allows us to consider the nanocomposite material as a solid-phase analytical reagent for the determination of mercury(II). The influence of the reaction time and pH on the sensitivity of mercury determination is studied. The detection limit of mercury under the selected conditions is equal to 50 μg/L; the range of determined contents is 150–1000 μg/L. The increase in the volume of the analyzed solution from 5.0 to 100.0 mL via concentration reduces the detection limit of mercury to 5 μg/L.

中文翻译：

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以聚氨基甲酸银泡沫改性的银三角形纳米材料为固相分析试剂的新型纳米复合材料，用于测定汞（II）

摘要

提出了一种使用在表面平均长度为52 nm，厚度为4 nm的银三角形纳米板改性的聚氨酯泡沫塑料测定汞（II）的方法。该方法基于汞（II）对银纳米板的氧化。该过程伴随着纳米颗粒表面等离子体共振带的减小，这使我们可以将纳米复合材料视为固相分析试剂，用于测定汞（II）。研究了反应时间和pH值对汞测定灵敏度的影响。所选条件下汞的检出限等于50μg/ L；测定的含量范围为150–1000μg/ L。分析溶液的体积从5.0增​​加到100。