Showing papers in "Talanta in 2006"

TL;DR: RQ was applied as a novel approach to estimate the environmental risk of pharmaceuticals that are most frequently detected in wastewater effluents, surface waters and sediments and its continuous introduction in the environment may make them "pseudopersistents".

TL;DR: The developed analytical method was successfully applied to the analysis of pharmaceutical residues in WWTP influents and effluents, as well as in river water, and justifying the selection of internal standard calibration as the most suitable approach for this study.

TL;DR: The quality control analyses of four pharmaceutical formulations were transferred from HPLC to UPLC system and differences and SST parameters, advantages and disadvantages are discussed.

TL;DR: Various off-line and on-line procedures developed for uranium(VI) and thorium(IV) prior to their analytical determination since 1990 were critically reviewed in terms of enrichment factor, retention/sorption capacity, validation using certified reference materials and application to complex real samples.

TL;DR: Emerging biological and chemical monitoring tools that may become part of a 'toolbox' of techniques for use by those in charge of assessing water quality are presented.

TL;DR: This overview introduces and discusses the main concepts behind the development of nanosensors and the most relevant applications in the field of environmental analysis.

TL;DR: A simple, rapid and sensitive method was developed for simultaneous determination of hydroquinone, resorcinol and phenol in this kind of samples and a recovery study on real samples was carried out.

TL;DR: A sensor with potential for the development of a "chemical barcode" for real-time monitoring of fish freshness and correlates with bacterial growth patterns in fish samples thus enabling the "real-time" monitoring of spoilage in various fish species.

TL;DR: A new amperometric biosensor for hydrogen peroxide was developed based on cross-linking horseradish peroxidase by glutaraldehyde with multiwall carbon nanotubes/chitosan (MWNTs) composite film coated on a glassy carbon electrode that had good repeatability and stability for the determination of H(2)O(2).

TL;DR: Good analytical performance was achieved from real-world water samples such as river water, reservoir water, tap water and wastewater after primary pretreatment with proposed method, indicating that the developed method could be used as an alternative for the routine analysis of atrazine and simazine in many real water samples

TL;DR: A critical review of preconcentration procedures for determining lead using spectroanalytical techniques is offered, citing 160 references.

TL;DR: The accuracy obtained by comparing the determined contents of the elements with certified values, using BCR CRM 701, certified for the extractable contents (mass fractions) of Cd, Cr, Cu, Ni, Pb and Zn in sediment following a modified BCR-three step sequential extraction procedure, was found to be satisfactory.

TL;DR: The use of genetic algorithms (GA) for variable selection methods was found to enhance the classification performance of the PLS-DA models, and various metabolites were identified that are responsible for the observed separations.

TL;DR: Compared with the conventional methods, the proposed method enabled a rapid and simple determination of organophosphorus pesticides in water and fruit juice with minimal solvent consumption and a higher concentration capability.

TL;DR: A detailed description of today's most commonly used methods and of novel techniques for the quantification of these aspects is presented in this report citing 182 references in order to provide the reader with an understanding of the current state of the art assessment of liposome quality.

TL;DR: Partial last square regression (PLS) and artificial neural network (ANN) combined to FTIR-ATR and FTNIR spectroscopies have been used to design calibration models for the determination of methyl ester content in biodiesel blends (methyl ester+diesel).

TL;DR: This review describes recent tendencies for metal-binding and metalloprotein analysis, emphasizing metal quantification in proteins through X-ray, atomic absorption, mass spectrometric techniques, and others.

TL;DR: CeO(2)/Chitosan (CHIT) composite matrix was firstly developed for the single-stranded DNA (ssDNA) probe immobilization and the fabrication of DNA biosensor related to the colorectal cancer gene, showing the enhanced loading of ssDNA probe on the surface of electrode.

TL;DR: The use of liposomes as analytical and bioanalytical reagents has been shown to be successful of in a variety of different applications that will be reviewed here, including the growing number of other non-immunoassay applications as an evidence of their immense versatility.

TL;DR: The proposed method was successfully applied to the determination of trace amount of estrogens in wastewater treatment plant (WWTP) effluent water and exposure water with 10ngmL(-1) E2 for toxicological study in the authors' lab.

TL;DR: The amounts of free iron were detected using a catalytic action of Fe(III) and Fe(II) on the oxidation of N,N-dimethyl-p-phenylenediamine in the presence of hydrogen peroxide.

TL;DR: The advantages of this sensor were high sensitivity, inherent stability and simplicity and ability for simultaneous determination of uric acid, catecholamines and ascorbic acid without using any chromatography or separation systems.

TL;DR: The method involves pre-concentration and clean-up by solid phase extraction (SPE) using Oasis HLB extraction catridges and final analysis of the selected pharmaceutical compounds was carried out by high-performance liquid chromatography (HPLC) coupled with diode array detector (DAD).

TL;DR: The contents of spironolactone in pharmaceutical tablets were determined by the proposed method and the results agreed with the claimed values.

TL;DR: The chemiluminometric method was successfully applied to the determination of paracetamol in commercial pharmaceutical formulations and the chemiluminescence intensity is enhanced by the presence of manganese(II) ions.

TL;DR: Laser induced breakdown spectroscopy was applied for the elemental analysis of Arabian crude oil residue samples and the results achieved were compared with conventional technique like inductively coupled plasma.

TL;DR: The synthesized chelating polymeric sorbent shows superior binding affinity towards U(VI) and Th(IV) under selective pH conditions and is tested with some synthetic mixtures for the separation of U( VI) andTh( IV) from each other and also from La(III), Cu(II) and Pb(II).

TL;DR: The preliminary results illustrated that CdTe QDs prepared in water phase were highly luminescent, water-soluble, stable, and easily conjugated with biomolecules since their surface were coated with MPA containing free carboxyl group.

TL;DR: Chiralpak IA column gave better results than Chiralpak IB column for the reported molecules using the developed HPLC conditions, and Experimental conditions and the possible chiral recognition mechanisms have been discussed.

TL;DR: The synchronous fluorescence spectra show that the microenvironment of the tryptophan residues has not obvious changes, which obeys the phase distribution model and the thermodynamic data show that biliverdin molecules enter the hydrophobic cavity of BSA via hydrophilic interaction.