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1.
PAPER CURRENT
Temporal and Spatial Variations in Fine and Coarse Particles in Seoul, Korea (2014)
Publication Date: 2014-10-31
Description: Aerosol and Air Quality Research. Articles In Press Young Sung Ghim, Young-Soo Chang, Kweon Jung
Print ISSN: 1680-8584
Electronic ISSN: 2071-1409
Topics: Energy, Environment Protection, Nuclear Power Engineering
2.
PAPER CURRENT
Electrochemically controlled in-tube solid phase microextraction (2014)
Publication Date: 2014-10-31
Description: Publication date: Available online 30 October 2014 Source:Analytica Chimica Acta Author(s): Seyyed Hamid Ahmadi , Ahmad Manbohi , Kourosh Tabar Hydar We report a new in-tube solid phase microextraction approach named electrochemically controlled in-tube solid phase microextraction (EC in-tube SPME). This approach, which combined electrochemistry and in-tube SPME, led to decrease in total analysis time and increase in sensitivity. At First, pyrrole was elctropolymerized on the inner surface of a stainless steel tube. Then, the polypyrrole (PPy)-coated in-tube SPME was coupled on-line to liquid chromatography (HPLC) to achieve automated in-tube SPME–HPLC analysis. After the completion of EC-in-tube SPME–HPLC setup, the PPy-coated tube was used as working electrode for uptake of diclofenac as target analyte. Extraction ability of the tube in presence and in absence of applied electrical field was investigated. It was found that, under the same extraction conditions, the extraction efficiency could be greatly enhanced by using the constant potential. Important factors are also optimized. The detection limit (S/N=3) and precision were 0.1μgL−1 and 4.4%, respectively. Graphical abstract
Print ISSN: 0003-2670
Electronic ISSN: 1873-4324
Topics: Chemistry and Pharmacology
Published by Elsevier
3.
PAPER CURRENT
Visual and Portable Strategy for Copper(II) Detection Based on a Striplike Poly(Thymine)-Caged and Microwell-Printed Hydrogel (2014)
Publication Date: 2014-10-31
Description: Analytical ChemistryDOI: 10.1021/ac502843t
Print ISSN: 0003-2700
Electronic ISSN: 1520-6882
Topics: Chemistry and Pharmacology
4.
PAPER CURRENT
All-in-One Centrifugal Microfluidic Device for Size-Selective Circulating Tumor Cell Isolation with High Purity (2014)
Publication Date: 2014-10-31
Description: Analytical ChemistryDOI: 10.1021/ac5035049
Print ISSN: 0003-2700
Electronic ISSN: 1520-6882
Topics: Chemistry and Pharmacology
5.
PAPER CURRENT
Ultratrace determination of cadmium(II) ions in water samples using graphite furnace atomic absorption spectrometry after separation and preconcentration using magnetic activated carbon nanocomposites (2014)
Publication Date: 2014-10-31
Description: Anal. Methods, 2014, Advance ArticleDOI: 10.1039/C4AY02031F, PaperSamira Mohajer, Mahmoud Chamsaz, Mohammad H. EntezariThis work has studied the sorption/preconcentration of trace amounts of cadmium using a magnetic activated carbon nanocomposite (MAC) in water samples using graphite furnace atomic absorption spectrometry.To cite this article before page numbers are assigned, use the DOI form of citation above.The content of this RSS Feed (c) The Royal Society of Chemistry
Print ISSN: 1759-9660
Electronic ISSN: 1759-9679
Topics: Chemistry and Pharmacology
6.
PAPER CURRENT
Sheathless Capillary Electrophoresis-Tandem Mass Spectrometry for Top-Down Characterization of Pyrococcus furiosus Proteins on a Proteome Scale (2014)
Publication Date: 2014-10-31
Description: Analytical ChemistryDOI: 10.1021/ac503439n
Print ISSN: 0003-2700
Electronic ISSN: 1520-6882
Topics: Chemistry and Pharmacology
7.
PAPER CURRENT
Weak generalized and numerical solution for a quasilinear pseudo-parabolic equation with nonlocal boundary condition (2014)
Publication Date: 2014-10-31
Description: This paper investigates the one dimensional mixed problem with nonlocal boundary conditions, for the quasilinear parabolic equation. Under some natural regularity and consistency conditions on the input data, the existence, uniqueness, convergence of the weak generalized solution, and also continuous dependence upon the data of the solution are shown by using the generalized Fourier method. We construct an iteration algorithm for the numerical solution of this problem.
Print ISSN: 1687-1839
Electronic ISSN: 1687-1847
Topics: Mathematics
Published by SpringerOpen
8.
PAPER CURRENT
Quantitative Serine Protease Assays Based on Formation of Copper(II)-Oligopeptide Complexes (2014)
Publication Date: 2014-10-31
Description: Analyst, 2014, Accepted ManuscriptDOI: 10.1039/C4AN01731E, PaperXiaokang Ding, Kun-Lin YangA quantitative protease assay based on the formation of copper-oligopeptide complex is developed. In this assay, when a tripeptide GGH fragment is cleaved from an oligopeptide chain by serine proteases,...The content of this RSS Feed (c) The Royal Society of Chemistry
Print ISSN: 0003-2654
Electronic ISSN: 1364-5528
Topics: Chemistry and Pharmacology
9.
PAPER CURRENT
Modelling the electrophoretic migration behaviour of peptides and glycopeptides from glycoprotein digests in capillary electrophoresis-mass spectrometry (2014)
Publication Date: 2014-10-31
Description: Publication date: Available online 29 October 2014 Source:Analytica Chimica Acta Author(s): Albert Barroso , Estela Giménez , Fernando Benavente , José Barbosa , Victoria Sanz-Nebot In this study, the classical semiempirical relationships between the electrophoretic mobility and the charge-to-mass ratio (me vs. q/Mα) were used to model the migration behaviour of peptides and glycopeptides originated from the digestion of recombinant human erythropoietin (rhEPO), a biologically and therapeutically relevant glycoprotein. The Stoke's law (α =1/3), the classical polymer model (α =1/2) and the Offord's surface law (α =2/3) were evaluated to predict migration of peptides and glycopeptides, with and without sialic acids (SiA), in rhEPO digested with trypsin and trypsin-neuraminidase. The Stoke's law resulted in better correlations for the set of peptides used to evaluate the models, while glycopeptides fitted better with the classical polymer model. Once predicted migration times with both models, it was easy to simulate their separation electropherogram. Results were later validated predicting migration and simulating separation of a different set of rhEPO glycopeptides and also human transferrin (Tf) peptides and glycopeptides. The excellent agreement between the experimental and the simulated electropherograms with rhEPO and Tf digests confirmed the potential applicability of this simple strategy to predict, in general, the peptide-glycopeptide electrophoretic map of any digested glycoprotein. Graphical abstract
Print ISSN: 0003-2670
Electronic ISSN: 1873-4324
Topics: Chemistry and Pharmacology
Published by Elsevier
10.
PAPER CURRENT
Femtogram-Scale Photothermal Spectroscopy of Explosive Molecules on Nanostrings (2014)
Publication Date: 2014-10-31
Description: Analytical ChemistryDOI: 10.1021/ac503318e
Print ISSN: 0003-2700
Electronic ISSN: 1520-6882
Topics: Chemistry and Pharmacology