World Congress on Biosensors 2014

World Congress on Biosensors 2014
Biosensors 2014

Tuesday 9 April 2013

Just Published: Journal of Chromatography A


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:
Journal of Chromatography A
Selected papers from the latest issue:



2.

Highlights

► EAE and PLE are employed for the first time to obtain antioxidant compounds from lemon balm. ► Enzyme treatment increases the extraction of total phenols and antioxidant capacity of extracts. ► PLE allows extracting more efficiently phenolic compounds from this sample. ► LC–MS/MS is employed to identify a diverse group of phenolic compounds present on the extracts.



  Column Liquid Chromatography


3.
Rapid detection of economic adulterants in fresh milk by liquid chromatography–tandem mass spectrometry   Original Research Article

Pages 10-20
Grant Abernethy, Kerianne Higgs

Highlights

► A rapid LCMS means to spot 36 N-compounds that could be used to adulterate milk. ► Biuret may be used as a marker for synthetic (fertilizer) urea adulteration in milk. ► We threshold our interest to those levels where economic adulteration is plausible. ► The method provides a presence/absence indication for each analyte in ppm range. ► The method screens samples abnormal by FTIR to reduce numbers sent to evidential tests.



4.
Immunocapture couples with matrix-assisted laser desorption/ionization time-of-flight mass spectrometry for rapid detection of type 1 dengue virus   Original Research Article

Pages 21-27
Wen-Hung Chen, I-Hsiang Hsu, Yuh-Chang Sun, Yu-Kuo Wang, Tung-Kung Wu

Highlights

► Immunocapture coupled with MALDI-TOF MS method for DV1 detection was developed. ► Detection limit of 105pfu/mL was low enough for early detection of DF and DHF. ► Complex serum samples were tested to demonstrate the feasibility of this method.



5.

Highlights

► HSCCC was applied in separating 3 related substances in low level from Sodium Tanshinone IIA Sulfonate (STIIAS) bulk drug. ► Ammonium acetate was added into the solvent system to inhibit the emulsification in separating amphiphilic substances. ► The solvent system composed of chloroform–n-butanol–methanol–water was established and optimized to 17:0.3:14:9. ► Seven compounds were enriched by HSCCC as pretreatment of LC–MSn. To the best of our knowledge six compounds are first reported here.



6.
Conical coils counter-current chromatography for preparative isolation and purification of tanshinones from Salvia miltiorrhiza Bunge   Original Research Article

Pages 35-39
Junling Liang, Jie Meng, Mengzhe Guo, Zhi Yang, Shihua Wu

Highlights

► In this work, we built a novel conical coil counter-current chromatography. ► The conical coils were wound on the tapered holders, producing an extra gradient centrifugal force. ► The gradient centrifugal force gradient was distributed both in axial and radial directions. ► Thus it enabled CCC to retain more stationary phase than conventional helical coils. ► By use of the conical coil CCC, four tanshinones were well purified fromSalvia miltiorrhizaBunge.



7.
Overcoming matrix effects in electrospray: Quantitation of β-agonists in complex matrices by isotope dilution liquid chromatography–mass spectrometry using singly 13C-labeled analogues   Original Research Article

Pages 40-47
Ana González-Antuña, Juan C. Domínguez-Romero, Juan F. García-Reyes, Pablo Rodríguez-González, Giuseppe Centineo, J. Ignacio García Alonso, Antonio Molina-Díaz

Highlights

► A novel strategy based on isotope dilution mass spectrometry for LC–MS is proposed. ► Significant minimization of matrix effects occurring in electrospray LC–MS. ► Study of parameters affecting the measurement of isotope abundances by LC–TOFMS. ► Increased accuracy and precision for ultratrace level detection in complex matrices. ► Applied successfully to ultratrace detection of β-agonists in urine and liver.



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10.
Analysis of multi-class pharmaceuticals in fish tissues by ultra-high-performance liquid chromatography tandem mass spectrometry   Original Research Article

Pages 63-72
B. Huerta, A. Jakimska, M. Gros, S. Rodríguez-Mozaz, D. Barceló



11.



12.


  Gas Chromatography


13.

Highlights

► Acid-activated halloysite is active adsorbent for chlorinated hydrocarbons. ► Two methods maximum and division peak of inverse gas chromatography are comparable.



14.
Effect of impregnating agent and relative humidity on surface characteristics of sorbents determined by inverse gas chromatography   Original Research Article

Pages 101-104
M. Kasperkowiak, J. Kołodziejek, B. Strzemiecka, A. Voelkel

Highlights

►IGC was applied to evaluate the surface properties of zeolite and ion-exchange resins. ► Studied sorbents were impregnated with selected components of the post-fermentation broth. ► Effect of various impregnating agent on the surface properties of solids. ► Effect of different carrier gas humidity on IGC derived surface parameters.



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17.
Qualitative and quantitative analysis of vetiver essential oils by comprehensive two-dimensional gas chromatography and comprehensive two-dimensional gas chromatography/mass spectrometry   Original Research Article

Pages 127-148
Jean-Jacques Filippi, Emilie Belhassen, Nicolas Baldovini, Hugues Brevard, Uwe J. Meierhenrich


  Electrophoresis and Electrochromatography


18.
Determination of association constants between 5′-guanosine monophosphate gel and aromatic compounds by capillary electrophoresis   Original Research Article

Pages 149-154
Kaori Yamaguchi, Nobuyuki Takeyasu, Takashi Kaneta


  Short Communication

  Column Liquid Chromatography


19.

Highlights

► A selective determination method for MeHg+and EtHg+was developed. ► The developed method was applied to various soil/sediment samples. ► EtHg+was first detected from ERM CC 580 of certified reference material. ► Preliminary study concerning a relationship between T-Hg and MeHg+was performed.

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