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Novel integrated and portable endotoxin detection system based on an electrochemical biosensor

18-11-2014 | Ana Zuzuarregui; David Souto; Eva Perez-Lorenzo; Fernando Arizti; Susana Sánchez-Gómez; Guillermo Martínez de Tejada ..., Analyst, 2014

This paper describes the design, implementation and validation of a sensitive and integral technology solution for endotoxin detection. The unified and portable platform is based on the electrochemical detection of endotoxins using a synthetic peptide immobilized on a thin-film biosensor. The ...

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Making pyrophosphate visible: the first precipitable and real-time fluorescent sensor for pyrophosphate in aqueous solution

18-11-2014 | Shu-Yan Jiao; Kun Li; Xin Wang; Zeng Huang; Lin Pu; Xiao-Qi Yu, Analyst, 2014

An in situ generated BINOL–DPA–Zn(ii) complex is presented as a chemo-sensing ensemble for the recognition of phosphate-based molecules. The ensemble showed high sensitivity and selectivity for pyrophosphates (PPi), and it could be successfully applied in imaging PPi in living cells. Notably, the ...

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Arsenic-Rich Acid Mine Water with Extreme Arsenic Concentration: Mineralogy, Geochemistry, Microbiology, and Environmental Implications

14-11-2014 | Juraj Majzlan; Jakub Plášil; Radek Škoda; Johannes Gescher; Felix Kögler; Anna Rusznyak; Kirsten Küsel; Thomas R. Ne ..., Environmental Science & Technology, 2014

Extremely arsenic-rich acid mine waters have developed by weathering of native arsenic in a sulfide-poor environment on the 10th level of the Svornost mine in Jáchymov (Czech Republic). Arsenic rapidly oxidizes to arsenolite (As2O3), and there are droplets of liquid on the arsenolite crust with ...

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Sensors, Vol. 14, Pages 21535-21548: Magnetic Bead-Based Colorimetric Immunoassay for Aflatoxin B1 Using Gold Nanoparticles

14-11-2014 | Wang, Xu ; Niessner, Reinhard ; Knopp, Dietmar, Sensors, 2014

A competitive colorimetric immunoassay for the detection of aflatoxin B1 (AFB) has been established using biofunctionalized magnetic beads (MBs) and gold nanoparticles (GNPs). Aflatoxin B1-bovine serum albumin conjugates (AFB-BSA) modified MBs were employed as capture probe, which could ...

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Ionic‐liquid‐based, manual‐shaking‐ and ultrasound‐assisted, surfactant‐enhanced emulsification microextraction for the determination of three fungicide residues in juice samples

13-11-2014 | Xiaochu Chen, Xiangwei You, Fengmao Liu, Fan Hou, Xu Zhang, Journal of Separation Science, 2014

A novel manual shaking and ultrasound‐assisted surfactant‐enhanced emulsification microextraction method was developed for the determination of three fungicides in juice samples. In this method, the ionic liquid, 1‐ethyl‐3‐methylimidazolium bis[(trifluoromethyl)sulfonyl]imide, instead of a ...

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Evaluation of the combination of a dispersive liquid‐liquid microextraction method with micellar electrokinetic chromatography coupled to mass‐spectrometry for the determination of estrogenic compounds in milk and yogurt

13-11-2014 | Giovanni D'Orazio, María Asensio‐Ramos, Javier Hernández‐Borges, Miguel Ángel Rodríguez‐Delgado, Salvatore Fanali, ELECTROPHORESIS, 2014

In this work, the suitability of a methodology based on dispersive liquid‐liquid microextraction (DLLME) has been evaluated for the extraction of four endoestrogens (estriol, 17α‐estradiol, 17β‐estradiol and estrone), an exoestrogen (17α‐etynylestradiol) and a mycotoxin (zearalenone), together ...

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IJERPH, Vol. 11, Pages 11645-11663: Community-Based Lifestyle Intervention for Reducing Blood Pressure and Glucose among Middle-Aged and Older Adults in China: A Pilot Study

13-11-2014 | Lin, Aihua ; Zhang, Guanrong ; Liu, Zhiting ; Gu, Jing ; Chen, Weiqing ; Luo, Futian, International Journal of Environmental Research and Public Health, 2014

Although evidence suggests that lifestyle interventions can reduce blood pressure (BP) and glucose levels, there is little information about the feasibility of such interventions when implemented in community settings. This study evaluated the effectiveness of a community-based lifestyle ...

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Role of Air Bubbles Overlooked in the Adsorption of Perfluorooctanesulfonate on Hydrophobic Carbonaceous Adsorbents

13-11-2014 | Pingping Meng; Shubo Deng; Xinyu Lu; Ziwen Du; Bin Wang; Jun Huang; Yujue Wang; Gang Yu; Baoshan Xing, Environmental Science & Technology, 2014

Hydrophobic interaction has been considered to be responsible for adsorption of perfluorooctanesulfonate (PFOS) on the surface of hydrophobic adsorbents, but the long C–F chain in PFOS is not only hydrophobic but also oleophobic. In this study, for the first time we propose that air bubbles on ...

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Perspective: We need a global solution

13-11-2014 | Isaac Odame, Nature, 2014

Perspective: We need a global solution Nature. doi:10.1038/515S10a Author: Isaac Odame The disparity in outcomes for children with sickle-cell disease in developed and developing countries is an injustice, says Isaac Odame.

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Ink Dating Using Thermal Desorption and Gas Chromatography/Mass Spectrometry: Comparison of Results Obtained in Two Laboratories

12-11-2014 | Agnès Koenig, Jürgen Bügler, Dieter Kirsch, Fritz Köhler, Céline Weyermann, Journal of Forensic Sciences, 2014

Abstract An ink dating method based on solvent analysis was recently developed using thermal desorption followed by gas chromatography/mass spectrometry (GC/MS) and is currently implemented in several forensic laboratories. The main aims of this work were to implement this method in a new ...

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