World Congress on Biosensors 2014

World Congress on Biosensors 2014
Biosensors 2014

Friday, 5 August 2011

Just Published: Analytica Chimica Acta

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:

A three-dimensional hierarchical nanoporous PdCu alloy for enhanced electrocatalysis and biosensing

03 August 2011, 21:54:41Go to full article
Publication year: 2011
Source: Analytica Chimica Acta, In Press, Accepted Manuscript, Available online 3 August 2011
Aihua, Liu , Haoran, Geng , Caixia, Xu , Huajun, Qiu
Nanoporous copper (NPC) obtained by dealloying CuAl alloy is used as both three-dimensional template and reducing agent for the fabrication of nanoporous PdCu alloy with hollow ligaments by a simple galvanic replacement reaction with H2PdCl4 aqueous solution. Electron microscopy and X-ray diffraction characterizations demonstrate that after the replacement reaction, the ligaments become hollow tubular structure and the ligament shell is also comprised of small pores and nanoparticles with a typical size of ∼4nm (third order porosity). The as-prepared nanotubular mesoporous PdCu alloy (NM-PdCu) structure exhibits remarkably improved electrocatalytic activity towards the oxidation of formic acid and H2O2 compared with nanoporous...

Graphical abstract

 Graphical abstract:  Highlights: ► Nantubular mesoporous PdCu (NM-PdCu) alloy is facilely fabricated via one-step metal replacement reaction between nanoporous Cu and H2PdCl4. ► The NM-PdCu exhibits remarkably improved structure stability and electrocatalytic activity towards formic acid and hydrogen peroxide oxidation compared with NP-Pd. ► When coupled with GOx, the GOx/NM-PdCu electrode can be used for sensitive detection of glucose over a wide concentration range.
image

Optimized Cleanup Method for the Determination of Short Chain Polychlorinated n-Alkanes in Sediments by High Resolution Gas Chromatography/Electron Capture Negative Ion-Low Resolution Mass Spectrometry

03 August 2011, 21:54:41Go to full article
Publication year: 2011
Source: Analytica Chimica Acta, In Press, Accepted Manuscript, Available online 3 August 2011
Yuan, Gao , Haijun, Zhang , Jiping, Chen , Qing, Zhang , Yuzeng, Tian , ...
The performances of three adsorbents, i.e. silica gel, neutral and basic alumina, in the separation of short chain polychlorinated n-alkanes (sPCAs) from potential interfering substances such as polychlorinated biphenyls (PCBs) and organochlorine pesticides were evaluated. To increase the cleanup efficiency, a two-step cleanup method using silica gel column and subsequent basic alumina column was developed. All the PCB and organochlorine pesticides could be removed by this cleanup method. The very satisfying cleanup efficiency of sPCAs has been achieved and the recovery in the cleanup method reached 92.7%. The method detection limit (MDL) for sPCAs in sediments was determined to be...

Graphical abstract

 Graphical abstract:  Highlights: ► The elution characters of sPCAs and interfering substances were evaluated on three adsorbents. ► An optimized cleanup method was developed for sPCAs with satisfying cleanup efficiency. ► The cleanup method combined with HRGC/ECNI-LRMS was applied for sPCAs analysis. ► The sPCAs levels range from 53.6ngg−1 to 289.3ngg−1 in tested sediment samples.
image

No comments:

Post a Comment