World Congress on Biosensors 2014

World Congress on Biosensors 2014
Biosensors 2014

Wednesday, 15 June 2011

Just Published: Talanta

A new issue of this journal has just been published. To see abstracts of the papers it contains (with links through to the full papers) click here:

Selected papers from this issue;

Continuous flow method for the simultaneous determination of phosphate/arsenate based on their different kinetic characteristics

12 June 2011, 21:37:04Go to full article
Publication year: 2011
Source: Talanta, In Press, Accepted Manuscript, Available online 12 June 2011
Laura, Borgnino , Valeria, Pfaffen , Pedro J., Depetris , Miriam, Palomeque
This paper proposes a new automated spectrophotometric method for the simultaneous determination of phosphate and arsenate without pre-treatment, which is faster, simpler, less expensive and hazardous than other well-known methods used with water samples. Such method is based on the different kinetic characteristics of complex formation of phosphate and arsenate with ammonium molybdate. A flow system was used in order to achieve good mixing and to provide precise time control. All the measurements were performed at the isosbestic point wavelength (885nm). Chemical variables were optimized by factorial design (ammonium molybdate 0.015molL−1, potassium antimony tartrate 1×10−4molL−1, and sulphuric acid 0.7molL−1). An...

Synthesis of orientedly bioconjugated core/shell Fe3O4@Au magnetic nanoparticles for cell separation

12 June 2011, 21:37:04Go to full article
Publication year: 2011
Source: Talanta, In Press, Accepted Manuscript, Available online 12 June 2011
Yi-Ran, Cui , Chao, Hong , Ying-Lin, Zhou , Yue, Li , Xiao-Ming, Gao , ...
Orientedly bioconjugated core/shell Fe3O4@Au magnetic nanoparticles were synthesized for cell separation. The Fe3O4@Au magnetic nanoparticles were synthesized by reducing HAuCl4 on the surfaces of Fe3O4 nanoparticles, which were further characterized in detail by TEM, XRD and UV-Vis spectra. Anti-CD3 monoclonal antibody was orientedly bioconjugated to the surface of Fe3O4@Au nanoparticles through affinity binding between the Fc portion of the antibody and protein A that covalently immobilized on the nanoparticles. The oriented immobilization method was performed to compare its efficiency for cell separation with the non-oriented one, in which the antibody was directly immobilized onto the carboxylated nanoparticle surface. Results showed...

A Luminol-Based Micro-Flow-Injection Electrochemiluminescent System to Determine Reactive Oxygen Species

12 June 2011, 21:37:04Go to full article
Publication year: 2011
Source: Talanta, In Press, Accepted Manuscript, Available online 12 June 2011
Chen, Ming , Wei, Xiuhua , Tu, Yifeng
A flow injection analysis (FIA) system with electrochemiluminescent (ECL) detection has been established. Based on a specially designed flow-through ECL cell with a very simple structure, the system possesses rapid response and high sensitivity. With luminol as the ECL reagent, the response of hydrogen peroxide (H2O2) was investigated on the developed FIA-ECL system. After optimizing the experimental conditions, such as the electric parameters, the buffer condition and the flow rate, it was demonstrated that the developed FIA-ECL system works well for quantified assays. Compared with reported works, the present results indicate that the developed FIA-ECL system has the lowest limit...

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