Hatamie Amir, Zargar Behrooz, Jalali Amir
Department of Chemistry, Faculty of Sciences, Shahid Chamran Universitry, Ahvaz, Iran.
Department of Chemistry, Faculty of Sciences, Shahid Chamran Universitry, Ahvaz, Iran.
Talanta. 2014 Apr;121:234-8. doi: 10.1016/j.talanta.2014.01.008. Epub 2014 Jan 16.
This study introduces a new method for the visual and spectrophotometric detection of chemical species using copper nanoparticles (Cu NPs). A simple method for the synthesis of Cu NPs for rapid colorimetric visual detection of sulfide ions (S(2-)) in water samples is described. The Cu NPs sensor detects sensitive and selective color change in the presence of micromolar levels of S(2-) that can be observed with the naked eye and monitored using a UV-vis spectrophotometer. The color change quantitatively correlates with the concentration of S(2-) from 12.5 × 10(-6)M to 50.0 × 10(-6)M. Samples of tap water and river water were spiked and analyzed using the proposed system. The results showed that the sensor exhibited excellent detection for S(2-) in the water samples. A main advantage of the new method is that it provides good selectivity for detecting S(2-) without the need for complex readout equipment. The proposed method has a high potential for rapid environmental monitoring of sulfide ions.
本研究介绍了一种使用铜纳米颗粒（Cu NPs）对化学物质进行视觉和分光光度检测的新方法。描述了一种合成Cu NPs的简单方法，用于对水样中的硫化物离子（S(2-)）进行快速比色视觉检测。Cu NPs传感器在存在微摩尔水平的S(2-)时能检测到灵敏且选择性的颜色变化，这种变化可用肉眼观察并使用紫外可见分光光度计进行监测。颜色变化与12.5×10(-6)M至50.0×10(-6)M的S(2-)浓度定量相关。使用所提出的系统对自来水和河水样品进行加标并分析。结果表明，该传感器对水样中的S(2-)表现出优异的检测效果。新方法的一个主要优点是，它在检测S(2-)时具有良好的选择性，无需复杂的读出设备。所提出的方法在硫化物离子的快速环境监测方面具有很高的潜力。
