Showing papers in "Analytica Chimica Acta in 2016"

TL;DR: This review presents and discusses the state-of-the-art analytical techniques and sample preparation methods suitable for dealing with complex samples, and single- and multi-method approaches applied to solve the nanometrological challenges posed by a variety of stakeholders.

TL;DR: The main objective is to offer an assessment of the state of the art and identify research needs and future trends in determining pesticide and veterinary drug residues in food by LC-MS.

TL;DR: This review focuses on recent and potential advances in chemometric methods in relation to data processing in metabolomics, especially in the combination with modern chemical analysis techniques, and dedicated statistical, and chemometric data analytical strategies.

TL;DR: The screening methods mentioned in this paper include approaches using the perfusion flow mode, the droplet mode, and the microarray mode and the future development of microfluidic based high throughput screening platform for drug discovery is discussed.

TL;DR: The low detection limits reported demonstrate the potential use of quantum dot based sensors for pesticide detection in different media as alternatives to expensive and time-consuming conventional techniques and highlight potential limitations that these probes may present when it comes to routine application.

TL;DR: The proposed analytical procedure was applied to detect the trace metal ions in drinking water samples with satisfactory results which demonstrates the suitability of the BiF/N/IL/G/SPCE to detect heavy metals in water samples and the results agreed well with those obtained by inductively coupled plasma mass spectrometry.

TL;DR: The structural tunability and paramagnetic properties of MILs have enabled magnet-based technologies that can easily be added to the analytical method workflow, complement needed extraction requirements, or target specific analytes.

TL;DR: Recent developments in both well-established microextraction techniques and recently appeared microext extraction procedures for the clinical analysis of biological samples will be reviewed and discussed.

TL;DR: A new term, designated as 'food identitation', has been introduced in order to complete the life cycle of the chemical-based food authentication process, and the strategies for Chromatographic signals acquisition and chromatographic data handling are unified in a single framework.

TL;DR: An overview of the electrochemical biosensors that have incorporated carbon and metal nanomaterials in their configurations for the detection of toxins and the roles, methods and advantages they provide to the analyses are summarised.

TL;DR: A critical overview of the current state of the use of MOFs as SPME coatings is provided, not only highlighting the advantages of these materials versus commercial SPMEs in terms of stability, selectivity, and sensitivity; but also insightfully describing the current methods to obtain reproducible MOF-based SPMe coatings.

TL;DR: This review aims to discuss the characteristics of the main analytical methods reported so far for the determination of mixtures of bisphenol analogs and/or derivatives in human and environmental exposure sources and biological fluids.

TL;DR: UV-vis spectrometry demonstrated that this hybridization-based method exhibited selective colorimetric responses to the presence or absence of target cells, which is detectable with naked eye.

TL;DR: A novel reagentless paper-based electrochemical phosphate sensor, manufactured with a simple and inexpensive approach, that readily allows for the determination of phosphate ions with high reproducibility and long storage stability.

TL;DR: A virtual special issue is introduced that reviews the development of analytical approaches to the determination of phosphorus species in natural waters, focusing on sampling and sample treatment, analytical methods and quality assurance of the data.

TL;DR: This review focuses on analytical methods for EVOO/VOO which use fast and smart approaches based on chemometric techniques in order to reduce time of analysis, reagent consumption, high cost equipment and manpower.

TL;DR: The rational design of molecularly imprinted polymers has been a major contributor to their reputation as "plastic antibodies" - high affinity robust synthetic receptors which can be optimally designed, and produced for a much reduced cost than their biological equivalents.

TL;DR: It is shown that this novel immunosensor is highly specific and sensitive to AIV H7, and the established assay could potentially be applied to rapidly detect other pathogenic microorganisms.

TL;DR: The Fc-S-Au/C NC/graphene/GCE exhibits a synergistic catalytic and amplification effects towards oxidation of AA, DA, UA and AC owing to the existence of the nanomaterial and electron mediator.

TL;DR: A localized version of standard normal variate (SNV) is proposed, in which the correction parameters are estimated from local spectral areas, and the method of determining the optimal spectral segmentation is presented.

TL;DR: A new way of on-chip flow control and a rational design simulation tool, which are required to underpin fully integrated and automated droplet-based microfluidic systems, are discussed.

TL;DR: A new variable selection method called bootstrapping soft shrinkage (BOSS) method, derived from the idea of weighted bootstrap sampling and model population analysis, which shows that BOSS is promising with improved prediction performance.

TL;DR: The results showed that the agarose gel can be used as one of the standard diffusive layers in DGT measurements for a wide range of inorganic and organic analytes.

TL;DR: N nanoparticle-based electrochemical, piezoelectric, optical, and immunodipstick assays for aflatoxins have been developed and novel concepts and promising applications in the field of food safety are illustrated.

TL;DR: Although biogenic amines have been determined in wine and other fermented beverages for decades, new advancements and technical possibilities have allowed to increase the accuracy and sensitivity of analytical methods, in order to overcome the challenges posed by the complex matrices and their high intrinsic variability.

TL;DR: The combination of deep eutectic solvents and molecular imprinted technology in this paper provides a new perspective for the recognition and separation of proteins.

TL;DR: A stable label-free amperometric immunosensor is presented based on gold nanoparticles and graphene oxide nanocomposites for detection of cardiac troponin-I in the early diagnosis of myocardial infarction and is capable of detecting cTnI at concentrations as low as 0.05 ng mL(-1), which is 100 times lower than that possible by conventional methods.

TL;DR: The purpose of the current review is to describe and critically compare the available methods that attempt at determining the range of ambiguity for the case of 3-component systems.

TL;DR: In this paper, the effects of three different cone combinations with the addition of N 2 on the performance of in situ S isotope analyses were investigated in detail, and the results showed that the signal intensities of S isotopes were improved by a factor of 2.3 and 3.6 using the X skimmer cone combined with the standard sample cone or the Jet sample cone, respectively.

TL;DR: It is reported for the first time that gold nanoparticles-catalyzed 3,3',5,5'-tetramethylbenzidine-H2O2 system can serve as an ultrasensitive colorimetric pH indicator and a novel sensing platform for the determination of urea, urease, and ure enzyme inhibitor.