Showing papers in "Journal of Chromatography A in 2010"

TL;DR: This review focuses on the extra steps in sample preparation for application of DLLME in different matrixes such as food, biological fluids and solid samples and its applications in conjunction with different extraction techniques such as solid-phase extraction, solidification of floating organic drop and supercritical fluid extraction are summarized.

TL;DR: The acetate-buffered version of QuEChERS using MeCN exhibited advantages compared to the other tested methods in the study, and worked equally well for all matrices tested.

TL;DR: It is remarkable the strong impact of SFE to extract high value compounds from food and natural products but also its increasing importance in areas such as heavy metals recovery, enantiomeric resolution or drug delivery systems.

TL;DR: This tutorial review is mainly focused on mechanisms of chiral recognition and enantiomer distinction of popular chiral selectors and corresponding chiral stationary phases and attempts to provide the reader with vivid images of molecular recognition mechanisms of selected chiral selector-selectand pairs on basis of solid-state X-ray crystal structures and simulated computer models.

TL;DR: The review discusses the pitfalls of the matrix effect in mass spectrometry detection hyphenated to liquid chromatography separation and proposes hypotheses to explain the observed behaviours and proposes methods and strategies to overcome the matrix effects.

TL;DR: The conclusion from this overview is that the adoption of new technologies to improve its performance converts Soxhlet extraction in almost a "panacea" in this field.

TL;DR: A vast variety of methods that have meanwhile emerged for the preparation of monoliths comprising standard free radical polymerizations, including stable free radicals, atom transfer radical polymerization, and ring-opening metathesis polymerization are presented.

TL;DR: With some modifications, a scaled-up PHWE could extract a higher amount of desirable compounds from solid and powdered samples such as plant and food materials, which can be a potential lead for drug discovery or development of disease-resistant food crops.

TL;DR: These studies indicate that the solution properties of ionic liquids are similar to those of polar organic solvents, which is of interest for applications in separation science.

TL;DR: This review will describe and discuss a selected number of crucial developments in ionization, instrumentation, and application of MS based imaging that extend spatial resolution, mass resolving power, mass accuracy, tandem-MS capabilities, and offer new gas-phase separation capabilities.

TL;DR: A view on method optimisation, limitations, potential solutions such as in-house coatings and derivatisation and novel applications in multi-residue analysis and passive sampling are revised.

TL;DR: This review article pretends to focus on the most important features and different applications of SPE using CNTs (including matrix solid-phase dispersion and solid- phase microextraction) covering articles published since their introduction up to now (September 2009).

TL;DR: Main attention in this review is on the achievements that have been possible because of the latest advances and novelties in mass spectrometry and how these progresses have influenced the best control of food allowing an increase in the food safety and quality standards.

TL;DR: The basic terms, sources of uncertainty, and methods of calculating the combined uncertainty that any presentation of final determinations should include are presented.

TL;DR: The extraction of anti-cancer drugs, beta-blockers drugs, local anaesthetics, neurotransmitters and antibiotics from biological samples using MEPS technique will be illustrated.

TL;DR: The aim of the present review is to provide a general overview and an update of the last developments of MSPD.

TL;DR: The extraction methodologies together with the separation and detection techniques which are currently applied in the determination of PAHs in food and beverages, including specific extraction conditions, performance characteristics, chromatographic and detection parameters are discussed.

TL;DR: The optimized method was successfully applied to the determination of 16 PAHs in real environmental water samples, and several condition parameters, such as extraction adsorbents, elution solvents and volumes, and sample loading flow rate and volume were optimized.

TL;DR: This review article summarizes the historical development and various modes of the technique, some theoretical and practical aspects, recent trends and selected applications of single drop microextraction.

TL;DR: This review outlines recent progress in the research on some new classes of sorbents for extraction and microextraction techniques and focuses on recent advanced developments in the design, synthesis and application of sol-gel in preparation of coatings for the SPME fibers.

TL;DR: Differences in selectivity between these various columns indicate that the stationary phase cannot function merely as an inert support for a water layer into which the solutes partition from the bulk mobile phase.

TL;DR: Current knowledge on graphitic carbon stationary phases is described, based on over 400 fundamental studies and applications, that were invented 30 years ago and commercially available for 20 years.

TL;DR: The ability of the three studied environmentally friendly extraction techniques to obtain bioactives from natural sources is demonstrated.

TL;DR: This paper critically reviews the published determination methods of Sudan I-IV dyes and suggests that UV-vis absorbance detection is applied more and more often as it offers more reliable identification possibilities.

TL;DR: This review evaluates several alternatives to the currently established platforms for the downstream processing biopharmaceuticals, with main focus on aqueous two-phase extraction.

TL;DR: An overview of liquid chromatography-mass spectrometry methods used for the determination of trace organic contaminants in environmental samples is presented, focusing on five groups of emerging contaminants that raised most concern as environmental contaminants and therefore attracted attention of a research community.

TL;DR: This review considers some of the difficulties encountered with the analysis of ionised bases using reversed-phase chromatography, such as detrimental interaction with column silanol groups, and overloading which both lead to poor peak shapes.

TL;DR: This new SPE method provides several advantages, such as high extraction efficiency, high breakthrough volumes, convenient extraction procedure, and short analysis times, for the first time that Fe(3)O(4)/C nanoparticles are used for the pretreatment of environmental water samples.

TL;DR: A sensitive and selective multi-residue method for simultaneous determination and quantification of 23 pharmaceuticals and synthetic hormones from different therapeutic classes in water samples to determine the levels of target analytes in various samples, including river water and STP effluents.

TL;DR: The performance of the new Kinetex-C(18) column was investigated and the liquid-solid mass transfer of proteins is exceptionally fast on Kinetx-C (18) much faster than on the Halo-C-18 column, breaking the legendary record set 3 years ago.