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1,432 Newest Publications about the topic mercury

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Voltammetric Determination of Nitrofurantoin at a Mercury Meniscus Modified Silver Solid Amalgam Electrode

21-11-2014 | Zuzana Krejčová, Jiří Barek, Vlastimil Vyskočil, Electroanalysis, 2014

Abstract Electrochemical behavior of nitrofurantoin (NF) was studied by direct current voltammetry (DCV), differential pulse voltammetry (DPV), and cyclic voltammetry (CV) using a mercury meniscus modified silver solid amalgam electrode (m‐AgSAE). Voltammetric behavior of NF was studied in ...

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IJERPH, Vol. 11, Pages 12029-12041: Surveying Mercury Levels in Hair, Blood and Urine of under 7-Year Old Children from a Coastal City in China

20-11-2014 | Chen, Guixia ; Chen, Xiaoxin ; Yan, Chonghuai ; Wu, Xingdong ; Zeng, Guozhang, International Journal of Environmental Research and Public Health, 2014

Aim: The average mercury load in children under 7-years old was determined in a populated but not overly industrial coastal area in China. Methods: 395 blood samples, 1072 urine samples, and 581 hair samples were collected from 1076 children, aged 0 to 6 years, from eight representative ...

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Contamination of Mercury during the Wintering Period Influences Concentrations at Breeding Sites in Two Migratory Piscivorous Birds

19-11-2014 | Raphael A. Lavoie; Christopher J. Baird; Laura E. King; T. Kurt Kyser; Vicki L. Friesen; Linda M. Campbell, Environmental Science & Technology, 2014

Many aquatic fish-eating birds migrate long distances and are exposed to different mercury concentrations ([Hg]) during their annual cycle. Here we examined the importance of migration on [Hg] in two colonial migratory fish-eating bird species. We determined temporal trends of [Hg] and stable ...

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Speciation of mercury in various samples from the micro-ecosystem of East Lake by hollow fiber-liquid–liquid–liquid microextraction-HPLC-ICP-MS

18-11-2014 | Beibei Chen; Yunli Wu; Xueqin Guo; Man He; Bin Hu, Journal of Analytical Atomic Spectrometry, 2014

A novel method by combining hollow fiber-liquid–liquid–liquid microextraction (HF-LLLME) with HPLC-ICP-MS was developed for the speciation of inorganic mercury (Hg2+) and organomercury including methylmercury (MeHg+), ethylmercury (EtHg+) and phenylmercury (PhHg+), in the micro-ecosystem of East ...

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Label-Free in Situ Quantification of Drug in Living Cells at Micromolar Levels Using Infrared Spectroscopy

17-11-2014 | K. L. Andrew Chan; Pedro L. V. Fale, Analytical Chemistry, 2014

Quantifying the rate and the amount of drug entering live cells is an essential part of the medicine development process. Infrared spectroscopy is a label-free, chemically selective tool for analyzing the composition of live cells in culture that has the potential to quantify, in situ, the amount ...

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X-ray Structure of a Hg2+ Complex of Mercuric Reductase (MerA) and Quantum Mechanical/Molecular Mechanical Study of Hg2+ Transfer between the C-Terminal and Buried Catalytic Site Cysteine Pairs

13-11-2014 | Peng Lian; Hao-Bo Guo; Demian Riccardi; Aiping Dong; Jerry M. Parks; Qin Xu; Emil F. Pai; Susan M. Miller; Dong-Qing ..., Biochemistry, 2014

Mercuric reductase, MerA, is a key enzyme in bacterial mercury resistance. This homodimeric enzyme captures and reduces toxic Hg2+ to Hg0, which is relatively unreactive and can exit the cell passively. Prior to reduction, the Hg2+ is transferred from a pair of cysteines (C558′ and C559′ using ...

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Isotopic composition analysis of dissolved mercury in seawater with purge and trap preconcentration and a modified Hg introduction device for MC-ICP-MS

12-11-2014 | Haiying Lin; Dongxing Yuan; Bingyan Lu; Shuyuan Huang; Lumin Sun; Fan Zhang; Yaqin Gao, Journal of Analytical Atomic Spectrometry, 2014

This study aimed to solve the common problems in Hg isotope analysis of water samples at low concentration. The isotope composition of dissolved Hg in seawater is reported for the first time. A modified device for introducing Hg into a multi-collector inductively coupled plasma mass spectrometer ...

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Mercury Re-Emission in Flue Gas Multipollutants Simultaneous Absorption System

11-11-2014 | Yue Liu; Qingfeng Wang; Rongjun Mei; Haiqiang Wang; Xiaole Weng; Zhongbiao Wu, Environmental Science & Technology, 2014

Recently, simultaneous removal of SO2, NOx and oxidized mercury in wet flue gas desulfurization (WFGD) scrubber has become a research focus. Mercury re-emission in traditional WFGD system has been widely reported due to the reduction of oxidized mercury by sulfite ions. However, in ...

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Rapid, Selective, and Ultrasensitive Fluorimetric Analysis of Mercury and Copper Levels in Blood Using Bimetallic Gold–Silver Nanoclusters with “Silver Effect”-Enhanced Red Fluorescence

10-11-2014 | Ning Zhang; Yanmei Si; Zongzhao Sun; Lijun Chen; Rui Li; Yuchun Qiao; Hua Wang, Analytical Chemistry, 2014

Bimetallic alloying gold–silver nanoclusters (Au-AgNCs) have been synthesized by a one-pot biomineralization synthesis route at a vital molar ratio of Au/Ag precursors in the protein matrix. Unexpectedly, the prepared Au-AgNCs could exhibit dramatically enhanced red fluorescence, which is about ...

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A sensitive assay of mercury using fluorescence correlation spectroscopy of gold nanoparticles

07-11-2014 | Zhancheng Xu, Tao Lan, Xiangyi Huang, Chaoqing Dong, Jicun Ren, Luminescence, 2014

ABSTRACT We described a new and sensitive method for the determination of mercury ions (Hg2+) on the basis of fluorescence correlation spectroscopy (FCS) and recognition of oligonucleotides. In this assay, 30‐nm gold nanoparticles (GNPs) were modified with oligonucleotides containing thymine ...

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