Listar por tema "liquid chromatography"
Mostrando ítems 1-16 de 16
-
Analytical methodologies based on LC–MS/MS for monitoring selected emerging compounds in liquid and solid phases of the sewage sludge
Elsevier (2016)In this work, two analytical methodologies based on liquid chromatography coupled to tandem mass spectrometry (LC–MS/MS) were developed for quantification of emerging pollutants identified in sewage sludge after a previous ... -
Contributions of MS metabolomics to gilthead sea bream (Sparus aurata) nutrition. Serum fingerprinting of fish fed low fish meal and fish oil diets
Elsevier (2019-01-01)The aim of this study was to evaluate the impact of fish meal (FM) and fish oil (FO) replacement by plant proteins and oils in the serum metabolome of two-year old gilthead sea bream (Sparus aurata) fed from early life ... -
Cromatography hyphenated to high resolution mass spectrometry in untargeted metabolomics for investigation of food (bio) markers
Universitat Jaume I (2020-09-09)Currently, there is a growing demand by our society, authorities and science to increase the knowledge about the food consumed and its relationship with health and disease. Untargeted metabolomics approaches are emerging ... -
Development and Application of Liquid Chromatographic Retention Time Indices in HRMS-Based Suspect and Nontarget Screening
American Chemical Society (2021)There is an increasing need for comparable and harmonized retention times (tR) in liquid chromatography (LC) among different laboratories, to provide supplementary evidence for the identity of compounds in high-resolution ... -
Development of a fast analytical method for the individual determination of pyrethrins residues in fruits and vegetables by liquid chromatography–tandem mass spectrometry
Elsevier (2013-09)Pyrethrins are natural insecticides derived from chrysanthemum flowers containing a mixture of six components: pyrethrin I, cinerin I, jasmolin I, pyrethrin II, cinerin II, and jasmolin II. In this work, a rapid and sensitive ... -
Development of a Retention Time Interpolation scale (RTi) for liquid chromatography coupled to mass spectrometry in both positive and negative ionization modes
Elsevier (2018-07)The accuracy and sensitivity of high resolution mass spectrometry (HRMS) enables the identification of candidate compounds with the use of mass spectrometric databases among other tools. However, retention time (RT) data ... -
Evaluation of uncertainty sources in the determination of testosterone in urine by calibration-based and isotope dilution quantification using ultra high performance liquid chromatography tandem mass spectrometry
Elsevier (2017-06)Three quantification methodologies, namely calibration with internal standard (Cal-IS, non-weighted), weighted calibration with internal standard (wCal-IS) and isotope pattern deconvolution (IPD) have been used for the ... -
Investigating the presence of pesticide transformation products in water by using liquid chromatography-mass spectrometry with different mass analyzers
John Wiley & Sons (2008)Many pesticide transformation products (TPs) can reach environmental waters as a consequence of their normally having a higher polarity than their parent pesticides. This makes the development of analytical methodology ... -
Prediction of chromatographic retention by artificial neural networks building a retention index database
Universitat Jaume I (2016-06-28)Kovats retention index became a tool of paramount importance for the comparison between gas chromatography systems. However, a robust methodology comparable with the Kovats index in relation to liquid chromatographic ... -
Quadrupole-time-of-flight mass spectrometry screening for synthetic cannabinoids in herbal blends
John Wiley & Sons (2013-05)‘Legal highs’ are novel substances which are intended to elicit a psychoactive response. They are sold from ‘head shops’, the internet and from street suppliers and may be possessed without legal restriction. Several months ... -
Qualitative screening of 116 veterinary drugs in feed by liquid chromatography-high resolution mass spectrometry. Potential application to quantitative analysis
Elsevier (2014)Veterinarian and human pharmaceuticals may be intentionally added to animal feed to enhance animal production. Monitoring these substances is necessary for protecting the consumers. In this work, a screening method covering ... -
Qualitative Screening of Undesirable Compounds from Feeds to Fish by Liquid Chromatography Coupled to Mass Spectrometry
American Chemical Society (2013)This paper describes the development, validation, and application of a rapid screening method for the detection and identification of undesirable organic compounds in aquaculture products. A generic sample treatment was ... -
Recent advances on ionic liquid uses in separation techniques
Elsevier (2017-09)The molten organic salts with melting point below 100 °C, commonly called ionic liquids (ILs) have found numerous uses in separation sciences due to their exceptional properties as non molecular solvents, namely, a negligible ... -
Screening of Pharmaceuticals and Illicit Drugs in Wastewater and Surface Waters of Spain and Italy by High Resolution Mass Spectrometry using UHPLC-QTOF MS and LC-LTQ-Orbitrap MS
Springer (2015)The existence of pharmaceuticals and illicit drugs (PIDs) in environmental waters has led many analytical chemists to develop screening methods for monitoring purposes. Water samples can contain a huge number of possible ... -
Study of pharmaceutical determination in water by solid phase extraction followed by liquid chromatography-mass spectrometry
Universitat Jaume I (2020-07-24)An analytical method has been studied for the determination of selected pharmaceuticals in different water samples by liquid chromatography coupled to tandem mass spectrometry (LCMS/MS). Samples studied were 9 in total ... -
Study on potential transfrnce of pesticides and polycyclic aromatic hidrocarbons from feed to farmed fish
Universitat Jaume I (2015-07-31)Throughout the last decades the huge demand on fish supply has led the world fish stocks to be over exploited. Aquaculture has appeared to be the solution for this situation, becoming the essential way of supplying the ...