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Showing 1 to 12 of 3164 entries
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Evaluation and application of Diffusive Gradients in Thin Films (DGT) technique using Chelex®-100, Metsorb™ and Diphonix® binding phases in uranium mining environments.

Analytica chimica acta

Drozdzak J, Leermakers M, Gao Y, Phrommavanh V, Descostes M.
PMID: 26343428
Anal Chim Acta. 2015 Aug 19;889:71-81. doi: 10.1016/j.aca.2015.07.057. Epub 2015 Aug 12.

A new resin- Diphonix(®) in Diffusive Gradients in Thin Films (DGT) technique for the determination of uranium was investigated and compared with previously used binding phases for uranium, Chelex(®)-100 and Metsorb™. The DGT gel preparation and the elution procedure...

Advances in the determination of hindered amine light stabilizers - A review.

Analytica chimica acta

Klampfl CW, Himmelsbach M.
PMID: 27496993
Anal Chim Acta. 2016 Aug 24;933:10-22. doi: 10.1016/j.aca.2016.06.001. Epub 2016 Jun 05.

Within this paper we discuss analytical strategies for the characterization and quantitation of hindered amine light stabilizers (HALS) an important sub-group of polymer additives. For the determination of monomeric HALS a range of mature and reliable techniques exists, allowing...

A simple and rapid method for isotopic analysis of nickel, copper, and zinc in seawater using chelating extraction and anion exchange.

Analytica chimica acta

Takano S, Tanimizu M, Hirata T, Shin KC, Fukami Y, Suzuki K, Sohrin Y.
PMID: 28390480
Anal Chim Acta. 2017 May 15;967:1-11. doi: 10.1016/j.aca.2017.03.010. Epub 2017 Mar 21.

Stable isotope ratios of nickel, copper, and zinc are powerful tools for elucidating the biogeochemical cycling of trace metals in the ocean. However, analytical difficulties have impeded isotopic studies of these metals. We present a simple and rapid method...

Facile fabrication of a novel 3D graphene framework/Bi nanoparticle film for ultrasensitive electrochemical assays of heavy metal ions.

Analytica chimica acta

Shi L, Li Y, Rong X, Wang Y, Ding S.
PMID: 28395771
Anal Chim Acta. 2017 May 22;968:21-29. doi: 10.1016/j.aca.2017.03.013. Epub 2017 Mar 24.

In this work, a novel 3D graphene framework/Bi nanoparticle (GF/BiNP) film was fabricated with a facile preparation route. 3D graphene framework with porous structures was electrochemically reduced and in situ assembled on the electrode, and BiNPs with tunable morphologies...

Determination of elemental composition of metals using ambient organic mass spectrometry.

Analytica chimica acta

Shiea C, Huang YL, Cheng SC, Chen YL, Shiea J.
PMID: 28395774
Anal Chim Acta. 2017 May 22;968:50-57. doi: 10.1016/j.aca.2017.03.009. Epub 2017 Mar 24.

Conventional inorganic mass spectrometric (MS) analysis of metals can require time-consuming and tedious sample preparation. We thus report the novel and direct characterization of metals in solid samples using an organic MS technique known as electrospray laser desorption ionization...

Evaluation of coloured materials in microfluidic flow-cells for chemiluminescence detection.

Analytica chimica acta

Spilstead KB, Alexander R, Doeven EH, Haswell SJ, Barnett NW, Francis PS.
PMID: 28395776
Anal Chim Acta. 2017 May 22;968:66-73. doi: 10.1016/j.aca.2017.03.001. Epub 2017 Mar 10.

Recent advances in the construction of chemiluminescence flow-cells has included high precision milling of channels into a range of different polymer materials, in efforts to maximise the transfer of light from the chemical reaction to the photodetector. However, little...

Electrophoretic separations on paper: Past, present, and future-A review.

Analytica chimica acta

Nanthasurasak P, Cabot JM, See HH, Guijt RM, Breadmore MC.
PMID: 28864197
Anal Chim Acta. 2017 Sep 08;985:7-23. doi: 10.1016/j.aca.2017.06.015. Epub 2017 Jun 19.

Point-of-collection (POC) devices aim for a fast, on-site detection for medical and environmental purposes. In this area, microfluidic Paper-based Analytical Devices (μPADs) have recently gained popularity because these are potentially cheap and environmentally friendly to produce, and easy to...

Hybrid approach combining chemometrics and likelihood ratio framework for reporting the evidential value of spectra.

Analytica chimica acta

Martyna A, Zadora G, Neocleous T, Michalska A, Dean N.
PMID: 27282749
Anal Chim Acta. 2016 Aug 10;931:34-46. doi: 10.1016/j.aca.2016.05.016. Epub 2016 May 24.

Many chemometric tools are invaluable and have proven effective in data mining and substantial dimensionality reduction of highly multivariate data. This becomes vital for interpreting various physicochemical data due to rapid development of advanced analytical techniques, delivering much information...

X-ray photoelectron spectroscopic and electrochemical impedance spectroscopic analysis of RuO2-Ta2O5 thick film pH sensors.

Analytica chimica acta

Manjakkal L, Cvejin K, Kulawik J, Zaraska K, Socha RP, Szwagierczak D.
PMID: 27282750
Anal Chim Acta. 2016 Aug 10;931:47-56. doi: 10.1016/j.aca.2016.05.012. Epub 2016 May 20.

The paper reports on investigation of the pH sensing mechanism of thick film RuO2-Ta2O5 sensors by using X-ray photoelectron spectroscopy (XPS) and electrochemical impedance spectroscopy (EIS). Interdigitated conductimetric pH sensors were screen printed on alumina substrates. The microstructure and...

Collision cross section prediction of deprotonated phenolics in a travelling-wave ion mobility spectrometer using molecular descriptors and chemometrics.

Analytica chimica acta

Gonzales GB, Smagghe G, Coelus S, Adriaenssens D, De Winter K, Desmet T, Raes K, Van Camp J.
PMID: 27181646
Anal Chim Acta. 2016 Jun 14;924:68-76. doi: 10.1016/j.aca.2016.04.020. Epub 2016 Apr 25.

The combination of ion mobility and mass spectrometry (MS) affords significant improvements over conventional MS/MS, especially in the characterization of isomeric metabolites due to the differences in their collision cross sections (CCS). Experimentally obtained CCS values are typically matched...

Polybutylene terephthalate-nickel oxide nanocomposite as a fiber coating.

Analytica chimica acta

Bagheri H, Roostaie A.
PMID: 25732309
Anal Chim Acta. 2015 Mar 10;863:20-8. doi: 10.1016/j.aca.2015.01.025. Epub 2015 Jan 29.

A highly efficient polybutylene terephthalate (PBT)-based nanocomposite containing nickel oxide nanoparticles was synthesized by electrospinning technique and used as a fiber coating for solid phase microextraction. The influential morphological parameters and capability of the prepared nanocomposite including the NiO...

A high performance system to study the influence of temperature in on-line solid-phase extraction capillary electrophoresis.

Analytica chimica acta

Tascon M, Benavente F, Sanz-Nebot V, Gagliardi LG.
PMID: 25732315
Anal Chim Acta. 2015 Mar 10;863:78-85. doi: 10.1016/j.aca.2014.12.053. Epub 2014 Dec 31.

A novel high performance system to control the temperature of the microcartridge in on-line solid phase extraction capillary electrophoresis (SPE-CE) is introduced. The mini-device consists in a thermostatic bath that fits inside of the cassette of any commercial CE...

Showing 1 to 12 of 3164 entries