基于金纳米粒子的用于灵敏直接测定硫化物离子的探针。
Probe for sensitive direct determination of sulphide ions based on gold nanoparticles.
作者信息
Shahbazi Neda, Zare-Dorabei Rouholah
机构信息
Research Laboratory of Spectrometry & Micro and Nano Extraction, Department of Chemistry, Iran University of Science and Technology, Tehran 16846-13114, Iran.
出版信息
IET Nanobiotechnol. 2018 Dec;12(8):1140-1143. doi: 10.1049/iet-nbt.2018.5153.
A highly selective and sensitive optical sensor based on localised surface plasmon resonance (LSPR) of gold nanoparticles (AuNPs) for the determination of a sulphide ion in aqueous solution is presented. The existence of sulphide is change the intensity of the LSPR band around 520 nm. In this sensor, sulphide ions were recognised and measured by UV-vis spectrophotometry. Three factors such as pH, time and concentration of AuNPs have been studied. The optimisation of effective parameters is done by one at a time method. This method was simple, rapid and cost efficient for the detection of sulphide. The linear range is 1.00-10.00 (4.16-41.63 µM) ppm with the correlation coefficient of 0.9874 and the detection limit of 0.54 ppm. The relative standard deviation of the reported method is 1.01%.
本文介绍了一种基于金纳米颗粒（AuNPs）局域表面等离子体共振（LSPR）的高选择性和灵敏的光学传感器，用于测定水溶液中的硫化物离子。硫化物的存在会改变520 nm附近LSPR带的强度。在该传感器中，通过紫外可见分光光度法识别和测量硫化物离子。研究了pH值、时间和AuNPs浓度等三个因素。有效参数的优化采用一次一个因素的方法。该方法用于检测硫化物简单、快速且成本低。线性范围为1.00 - 10.00（4.16 - 41.63 µM）ppm，相关系数为0.9874，检测限为0.54 ppm。所报道方法的相对标准偏差为1.01%。
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