Development of a novel setup for direct colorimetric visualization of elemental mercury vapor adsorption on colloidal gold nanoparticles

سال انتشار: 1393
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 601

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شناسه ملی سند علمی:

JR_IJHSE-1-3_001

تاریخ نمایه سازی: 22 دی 1393

چکیده مقاله:

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

نویسندگان

Mohammad Javad Assari

Environmental and Occupational Health Department, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran

Abbas Rezaee

Environmental and Occupational Health Department, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran

Ahmad Jonidi Jafari

Environmental Health Engineering Department, School of Public Health, Iran university of Medical Sciences, Tehran, Iran

Abdolrahman Bahrami

Occupational Health Engineering Department, School of Public Health, Hamadan University of Medical Sciences, Hamadan, Iran