نتایج جستجو برای: hg

تعداد نتایج: 30963  

For the first time, the present study removes ions of mercury, in the form of Hg (I) and Hg (II) ions, from aqueous solutions by adsorbing them onto titanium dioxide nanoparticles. The effects of various parameters, such as solution's initial pH, temperature, sorbent dosage, initial mercury concentration, and contact time have been examined on the adsorption process. The experimental results ha...

Journal: Pollution 2017

For the first time, the present study removes ions of mercury, in the form of Hg (I) and Hg (II) ions, from aqueous solutions by adsorbing them onto titanium dioxide nanoparticles. The effects of various parameters, such as solution's initial pH, temperature, sorbent dosage, initial mercury concentration, and contact time have been examined on the adsorption process. The experimental results ha...

Journal: :jundishapur journal of microbiology 0
nima mirzaei department of microbiology, science and research branch, islamic azad university, tehran, ir iran; department of microbiology, science and research branch, islamic azad university, tehran, ir iran. tel: +98-2188984446, fax: +98-2188957409 hilda rastegari department of microbiology, jahrom branch, islamic azad university, jahrom, ir iran mehdi kargar department of microbiology, jahrom branch, islamic azad university, jahrom, ir iran

background mercury is one of the most toxic heavy metals. even a small amount of it is toxic for all living organisms. some of bacteria have developed special resistance mechanisms against mercury, in addition to resistant to different antibiotics. these bacteria usually acquire hg and antibiotic resistance genes via horizontal gene transfer in their habitat. objectives the aim of this study wa...

ژورنال: علوم آب و خاک 2018

Dust particles are suspended particles created from various natural and anthropogenic sources. Dust particles contain toxic metals, such as mercury (Hg), which can have harmful effects on the human health. In this study, to investigate the contamination level of Hg in the street dust in Ahvaz, 95 dust samples were collected from the pavements in the main streets. The concentration of Hg in the ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه کاشان - پژوهشکده علوم نانو 1391

در این پروژه نانوساختارهای جیوه سلنید با روش سونوشیمی و با استفاده از سلنیم تتراکلرید (secl4) تهیه شدند و اثر انواع پارامترهای موثر در این روش نظیر :تغییر نوع سورفکتانت، زمان فرآیند سونیکاسیون، تغییر توان دستگاه فراصوت، اثر نوع کاهنده و ... بر روی اندازه و مورفولوژی نانوساختارها بررسی شد. برای نخستین بار از سلنیم تتراکلرید به عنوان منبع سلنیم و نیز از کمپلکس های [hg(salen)]، [hg(salophen)] و [h...

2015
Aleksandra Szkudlarek Alfredo Rodrigues Vaz Yucheng Zhang Andrzej Rudkowski Czesław Kapusta Rolf Erni Stanislav Moshkalev Ivo Utke

In this paper we study in detail the post-growth annealing of a copper-containing material deposited with focused electron beam induced deposition (FEBID). The organometallic precursor Cu(II)(hfac)2 was used for deposition and the results were compared to that of compared to earlier experiments with (hfac)Cu(I)(VTMS) and (hfac)Cu(I)(DMB). Transmission electron microscopy revealed the deposition...

2014
Dong-Hee Kang Hao Zhang Hanbyeol Yoo Hyun Hwi Lee Sooheyong Lee Geun Woo Lee Hongbo Lou Xiaodong Wang Qingping Cao Dongxian Zhang Jianzhong Jiang

Glass is a freezing phase of a deeply supercooled liquid. Despite its simple definition, the origin of glass forming ability (GFA) is still ambiguous, even for binary Cu-Zr alloys. Here, we directly study the stability of the supercooled Cu-Zr liquids where we find that Cu64Zr36 at a supercooled temperature shows deeper undercoolability and longer persistence than other neighbouring composition...

Journal: :ACS earth and space chemistry 2021

Author(s): Poulin, BA; Janssen, SE; Rosera, TJ; Krabbenhoft, DP; Eagles-Smith, CA; Ackerman, JT; Stewart, AR; Kim, E; Baumann, Z; JH; Manceau, A | Abstract: The robust application of stable mercury (Hg) isotopes for source apportionment and risk assessment necessitates the understanding mass-dependent fractionation (MDF) as a result internal transformations within organisms. Here, we used high ...

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