文章基本信息

标题：Development of a novel setup for direct colorimetric visualization of elemental mercury vapor adsorption on colloidal gold nanoparticles
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作者：Mohammad Javad Assari ; Abbas Rezaee ; Ahmad Jonidi Jafari 等
期刊名称：Iranian Journal of health, safety andenvironment
印刷版ISSN：2345-3206
电子版ISSN：2345-5535
出版年度：2014
卷号：.1No. 3
期号：5176
页码：6
语种：English
出版社：Iranian journal ofhealth, safety andenvironment
摘要：Mercury is a toxic, persistent, and bio-accumulative pollutant that has adverse effects on environmental and human health. Various studies have been conducted to monitor different forms of mercury. The objective of this study was to develop a novel setup for assessing gas phase elemental mercury vapor adsorption using colloidal gold nanoparticles solutions that display a characteristic surface plasmon resonance absorption peak in the visible spectrum. The UV-VIS-NIR spectrographs of gold nanoparticles blue shifts after exposure to mercury vapor. The surface plasmon resonances (SPR) of ∼4 and ∼30 nm gold nanoparticles were appeared with the sharp peaks at 515 and 528 nm respectively. The mercury vapor adsorbed in gold nanoparticles was related to the size. The amounts of mercury vapor adsorbed per grams of ∼4 and ∼30 nm gold nanoparticles solutions were obtained 1100 µg•g-1 and 1300 µg•g-1 respectively. A proposed novel setup based on UV-Vis spectroscopic undertaken to provide simplicity, use facilitating, potentially inexpensive, and sensitive enough is a suitable system for mercury vapor capture in many fields. It was demonstrated that the amount mercury adsorbed has been related to the sizes of gold nanoparticles. The color change was observed, when elemental mercury vapor adsorbed on the gold nanoparticles.