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:

Analytica Chimica Acta
http://rss.sciencedirect.com/publication/science/5216

Selected papers from the latest issue:

2.

The enzyme thermistor—A realistic biosensor concept. A critical review   Review Article Pages 1-12 Maria Yakovleva, Sunil Bhand, Bengt Danielsson Graphical abstract . Highlights ► Major principles and features of enzyme thermistor are described. ► Different types of enzyme thermistors are overviewed and compared. ► Applications of enzyme thermistor for determination of various analytes are presented. ► Advantages and drawbacks of the analytical method are highlighted.

3.

Native fluorescence detection of biomolecular and pharmaceutical compounds in capillary electrophoresis: Detector designs, performance and applications: A review   Review Article Pages 13-33 Bregje J. de Kort, Gerhardus J. de Jong, Govert W. Somsen Graphical abstract Highlights ► The use of native fluorescence detection in capillary electrophoresis is reviewed. ► Various detector designs are discussed, and their performances are evaluated. ► Specific attention is devoted to fluorescence detection in microfluidic systems. ► Applications of biomolecular and pharmaceutical compound analysis are described.

Chemometrics

4.

Chemometrics assisted resolving of net faradaic current contribution from total current in potential step and staircase cyclic voltammetry   Original Research Article Pages 34-46 Afsaneh Safavi, Bahram Hemmateenejad, Fatemeh Honarasa Graphical abstract Highlights ► A new method for treating of charging current in voltammetry has been proposed. ► Chemometrics analysis of voltammetric data revealed the presence of faradaic, step charging and induced charging currents. ► MCR-ALS analyses could separate the contribution of each current type in the total signal. ► The results were in agreement with previous theoretical models.

Electrochemistry

5.

A derivative photoelectrochemical sensing platform for 4-nitrophenolate contained organophosphates pesticide based on carboxylated perylene sensitized nano-TiO2   Original Research Article Pages 47-52 Hongbo Li, Jing Li, Qin Xu, Zhanjun Yang, Xiaoya Hu Graphical abstract Highlights ► A novel enzymeless photoelectrochemical sensor for 4-nitrophenolate contained OPs. ► Sensors have performances of rapid response, good sensitivity and selectivity. ► PTCA as sensitizer can form ultrastable thin film and is economic as well. ► The strategy extends the application of PTCA for photoelectrochemical sensor.

6.

Characterisation of iron binding ligands in seawater by reverse titration   Original Research Article Pages 53-60 Jeffrey A. Hawkes, Martha Gledhill, Douglas P. Connelly, Eric P. Achterberg Graphical abstract Highlights ► We have applied the reverse titration technique for analysis of Fe(III) speciation. ► The technique can be used in waters with high Fe(III). ► We examine the technique with dFOB, coastal seawater and hydrothermal plume water.

Extraction and Sample Handling

7.

Natural deep eutectic solvents as new potential media for green technology   Original Research Article Pages 61-68 Yuntao Dai, Jaap van Spronsen, Geert-Jan Witkamp, Robert Verpoorte, Young Hae Choi Graphical abstract Highlights ► Natural products were used as a source for deep eutectic solvents and ionic liquids. ► We define own chemical and physical properties of natural deep eutectic solvents. ► Interaction between natural deep eutectic solvents and solutes was confirmed by NMR. ► The developed natural deep eutectic solvents were applied as green media.

8.

Ultrasound-assisted hydrolysis and chemical derivatization combined to lab-on-valve solid-phase extraction for the determination of sialic acids in human biofluids by μ-liquid chromatography-laser induced fluorescence   Original Research Article Pages 69-76 M.I. Orozco-Solano, F. Priego-Capote, M.D. Luque de Castro Graphical abstract Highlights ► Semiautomated approach for determination of sialic acids in different biofluids. ► Ultrasound-enhanced hydrolysis and derivatization to shorten the analysis time. ► Lab-on-valve approach for automated solid-phase extraction with high concentration and cleanup efficiency. ► Validation of the method by application to biological samples with different characteristics.

Mass Spectrometry

9.

Coffee-ring effects in laser desorption/ionization mass spectrometry   Original Research Article Pages 77-82 Jie-Bi Hu, Yu-Chie Chen, Pawel L. Urban Graphical abstract Highlights ► Coffee rings occur during sample preparation for MALDI-MS and LDI-MS. ► They partly contribute to chemical heterogeneity of sample deposits. ► Coffee rings may be hidden within sample spots. ► Occurrence of coffee rings permits partial separation of sample components. ► In some cases, formation of coffee rings can be suppressed during sample preparation.

Sensors and Bioselective Reagents

10.

Lectin sensitized anisotropic silver nanoparticles for detection of some bacteria   Original Research Article Pages 83-87 Vardan K. Gasparyan, Inga L. Bazukyan Graphical abstract A novel approach for quantitative detection of bacteria in biological fluids was developed. Lectin sensitized anisotropic silver nanoparticles are able to bind Gram positive as well as Gram negative bacterial species. In this case the spectra of nanoparticles undergo serious changes. Highlights ► A novel approach for quantitative detection of bacteria in biological fluids was developed. ► Lectin sensitized anisotropic silver nanoparticles are able to bind as Gram positive as well Gram negative bacterial species. ► In this case the optical spectra of nanoparticles undergo a serious changes.

11.

Colorimetric assay for T4 polynucleotide kinase activity based on the horseradish peroxidase-mimicking DNAzyme combined with λ exonuclease cleavage   Original Research Article Pages 88-93 Cheng Jiang, Chunyan Yan, Jianhui Jiang, Ruqin Yu Graphical abstract Highlights ► The strategy was based on the coupled reaction triggered by polynucleotide kinase. ► The strategy was a colorimetric assay visible to the naked eye. ► The strategy had obvious advantages in controlling cost and simplifying operations. ► The strategy exhibited an improved signal to noise ratio and a wide linear range. ► The strategy could be extended to high-throughput phosphorylation investigations.

12.

A rapid and highly sensitive portable chemiluminescent immunosensor of carcinoembryonic antigen based on immunomagnetic separation in human serum   Original Research Article Pages 94-99 Shuxue Qu, Juntao Liu, Jinping Luo, Yiqing Huang, Wentao Shi, Bin Wang, Xinxia Cai Graphical abstract Highlights ► The anti-CEA antibody can bound to the bead with a conjugation rate of 73%. ► IMBs could be stored for 2 months without reduction of biological activity. ► The limit of detection (LOD) of this method was as low as 5.0pgmL−1(S/N=3). ► The novel immunosensor was highly sensitive with an assay time of <35min. ► There was a good agreement between our method and ELISA kit. ► A home-made luminometer was used to detect the optical signal.