Showing papers in "Talanta in 2013"

TL;DR: This review article aims to collect together the latest information on the causes of ion suppression in LC-MS analysis and to consider the efficacy of common approaches to eliminate or reduce the problem using relevant examples published in the literature.

TL;DR: The aim of the present review is to give an overview of the most recent sample preparation and analytical approaches (such as pressurized liquid extraction, solid-phase microextraction, supercritical fluid extraction, etc.), to introduce such a topic to researchers who want to approach it for the first time.

TL;DR: The research demonstrated that TS-HSI technique has a potential for rapid and non-destructive determination of bacterial spoilage in salmon flesh during the spoilage process and was considered to be the best for the TVC determination of salmon flesh.

TL;DR: The results demonstrated that the laborious and time-consuming tradition analytical techniques could be replaced by spectral data in order to provide rapid, low cost and non-destructive testing technique for adulterate detection in minced lamb meat.

TL;DR: The carbon dots obtained shows a strong emission at the wavelength of 400 nm with an optimum excitation of 305 nm and the fluorescence of the carbon dots was significantly quenched particularly by lead (II) ions in a selective manner.

TL;DR: The developed method provided a valuable tool for investigating the occurrence, behavior, transport, and the fate of PPCPs, EDCs and ASs in the aquatic environment.

TL;DR: The results of the study show that the identification of mercury species by the method of thermal desorption is possible and represents a significant step forward in direct mercury analysis in solid samples.

TL;DR: Hyperspectral imaging is demonstrated to be an effective tool for nondestructive measurement of Pseudomonas in raw chicken breast fillets and extraction of mean spectra is more efficient for representation of sample spectra than computation of median spectra.

TL;DR: The modified electrode modified with platinum nanoflowers supported on graphene oxide exhibited strong and sensitive amperometric responses to glucose even in the presence of a high concentration of chloride ions, and was promising for the development of a novel non-enzymatic electrochemical glucose sensor.

TL;DR: This review focuses on general properties of the most frequently used organic ligands in cloud-point extraction and on literature data concerning the use of modern techniques in determination of metal ions' content in various materials.

TL;DR: The proposed sensor displayed good selectivity, sensitivity, stability with appreciable consistency and precision, and superior electrocatalytic activity towards the oxidation of DA and PA, when compared with either pristine MWCNT or GO.

TL;DR: The as-prepared CuS NPs (covellite) was demonstrated to possess intrinsic peroxidase-like activity and was exploited as a new type of biosensor for detection and estimation of glucose through a simple, cheap and selective colorimetric method.

TL;DR: The qualitative and quantitative experimental results showed that the cellular uptake of SNPs toward HeLa cells is size-dependent, which will facilitate more development of size-defined SNPs as the transporters for various purposes.

TL;DR: Sensing principles, enzyme immobilization techniques, the electrode types, different approaches and various matrices used for biosensor fabrication are presented along with their benefits and limitations.

TL;DR: A novel nonenzymatic amperometric glucose sensor based on CuO nanoneedle/graphene/carbon nanofiber modified electrode with good stability and repeatability and high electrocatalytic activity toward the oxidation of glucose is reported.

TL;DR: Proteins and peptides from plant derived foods exerting antihypertensive, antioxidant, hypocholesterolemic, antithrombotic, and immunostimulating capacities or ability to reduce food intake have been reviewed.

TL;DR: The hybrid material of a copper-based metal-organic framework and graphite oxide (GO) was explored as the solid-phase microextraction (SPME) coating for the first time and indicated the MOF-199/GO composite provided a promising alternative in sample pretreatment.

TL;DR: A novel gold nanoparticle-modified graphite pencil electrode (AuNP-GPE) is prepared just by immersing a bare GPE in AuNP solution, followed by heating for 15 min, and satisfactory results are obtained.

TL;DR: A critical evaluation of the methods and electrode materials employed for mercury analysis is presented according to the following classifications: bare electrodes, chemically modified electrodes and nanostructured electrodes.

TL;DR: The presented procedure was successfully applied for determination of Pb(II) and Mn (II) contents in lipstick, rice samples and accuracy was evaluated analyzing a certified reference material Seronorm(™) Urine LOT NO2525.

TL;DR: The electrochemical sensor for BPA based on magnetic nanoparticles-reduced graphene oxide (rGO) composites and chitosan was presented and has been successfully applied to the determination of BPA in real samples with satisfactory results.

TL;DR: Taking advantage of highly effective chromatographic separation of 20 GAs and very sensitive mass spectrometric detection, the presented bioanalytical method serves as a useful tool for plant biologists studying the physiological roles of these hormones in plant development.

TL;DR: The major advantages of this Hg(2+) assay are its water-solubility, simplicity, low cost and high sensitivity, and this method provides a potentially useful method for the Hg (2+) detection in aqueous solution.

TL;DR: Near infrared (NIR) hyperspectral imaging (HSI) and different spectroscopic transforms were investigated for their potential in detecting total viable counts in raw chicken fillets and multi-spectral imaging systems were suggested to be developed for online applications.

TL;DR: The developed IL-DMME method, based on a combination of dispersive liquid-liquid microextraction and dispersive micro solid-phase extraction, successfully applied to the determination of lead in water, plant and hair samples.

TL;DR: The DLLME as a pretreatment procedure combined with reversed phase liquid chromatographic separation on C18 column and isocratic elution for simultaneous MS/MS determination of selected neonicotinoid insecticides in honey provides reliable, simultaneous, and quantitative method applicable for the routine laboratory analysis of seven neonicsotinoid residues in real honey samples.

TL;DR: A novel ZnO QDs based fluorescent probe has been successfully designed to detect DA with high selectivity and sensitivity and has a potential for the practical application in clinical analysis.

TL;DR: The QCM immunosensor developed with gold-nanoparticles showed good sensitivity and selectivity for Salmonella in the presence of other bacteria in real food samples and helped in reducing the pre-enrichment step, demonstrating the potential of this technology for the rapid and sensitive microbial analysis.

TL;DR: This review covers the progress made in the development of sensors for inorganic and organic phosphates that are significant pollutants within the environmental and biological systems.

TL;DR: A simple optical metal sensing platform was established by taking Ni(2+) as an example, and using the nickel ion-specific chelating reagent, dimethylglyoxime (DMG), to replace EDTA, a detection limit of 4.1 μM was obtained in standard solution.