Results 61 to 70 of about 107,390 (195)

Modification of the existing maximum residue levels for sodium 5‐nitroguaiacolate, sodium o‐nitrophenolate and sodium p‐nitrophenolate (sodium nitrocompounds) in table olives and olives for oil production

open access: yesEFSA Journal, 2020
In accordance with Article 6 of Regulation (EC) No 396/2005, the applicant Asahi Chemical Europe s.r.o. submitted a request to the competent national authority in Greece to modify the existing maximum residue levels (MRLs) for the active substances ...
European Food Safety Authority (EFSA)   +21 more
doaj   +1 more source

Determination of sensitivity limit in quantative analysis of polycyclic aromatic hydrocarbons by Gc-ms [PDF]

open access: yesActa Periodica Technologica, 2004
The limit of detection (LOD) and the limit of quantitation (LOQ) for 16 individual PAHs from the Environmental Protection Agency (EPA) list (naphthalene, acenaphthylene, acenaphtene, fluorene, phenanthrene antrachene, fluoranthene, pyrene, benzo(a ...
Marjanović Nikola J.   +3 more
doaj   +1 more source

Concentrations of higher dicarboxylic acids C5 – C13 in fresh snow samples collected at the High Alpine Research Station Jungfraujoch during CLACE 5 and 6 [PDF]

open access: yes, 2008
Samples of freshly fallen snow were collected at the high alpine research station Jungfraujoch (Switzerland) in February and March 2006 and 2007, during the Cloud and Aerosol Characterization Experiments (CLACE) 5 and 6. In this study a new technique has
Fries, Elke   +5 more
core  

Fast determination of biogenic amines in beverages by a core-shell particle column [PDF]

open access: yes, 2015
A fast and reliable HPLC method for the determination of 11 biogenic amines in beverages has been performed. After pre-column derivatization with dansyl-chloride a Kinetex C18 core–shell particle column (100 mm × 4.6 mm, 2.6 μm particle size) has been ...
Giuliana Vinci   +3 more
core   +1 more source

New high-performance liquid chromatography-dad method for analytical determination of arbutin and hydroquinone in rat plasma [PDF]

open access: yes, 2015
Natural substances present in herbal preparations should be carefully used because they can give toxic or therapeutic effects despite of their amount or the way of administration.
Altieri, I.   +5 more
core   +2 more sources

Portable EDXRF spectrometer: determination of linearity, LOD, LOQ, and working range for the analysis of base and precious metals in liquid matrices

open access: yesJournal of Physics: Conference Series, 2023
Abstract Utilizing a portable energy dispersive X-ray fluorescence (EDXRF) spectrometer and certified reference materials, this study aimed to determine the linearity, limit of detection (LOD), limit of quantification (LOQ), and working range of the method for quantitative analysis of base and precious metals in liquid matrices.
A Krummenauer   +3 more
openaire   +1 more source

Multiwalled Carbon Nanotube for One-Step Cleanup of 21 Mycotoxins in Corn and Wheat Prior to Ultraperformance Liquid Chromatography–Tandem Mass Spectrometry Analysis

open access: yesToxins, 2018
One-step solid-phase extraction (SPE) using a multiwalled carbon nanotube (MWCNT) for simultaneous analysis of 21 mycotoxins, including nine trichothecenes, zearalenone (ZEN) and its derivatives, four aflatoxins, and two ochratoxins, in corn and wheat ...
Dongmei Jiang   +5 more
doaj   +1 more source

A liquid chromatography tandem mass spectrometry method for simultaneous analysis of 46 atmospheric particulate-phase persistent organic pollutants and comparison with gas chromatography/mass spectrometry, [PDF]

open access: yes, 2017
A novel multi-analyte method for the simultaneous determination of 46 compounds of environmental concern, most of them belonging to the category of persistent organic pollutants, was developed using high-performance liquid chromatography and the results ...
Buiarelli, Francesca   +4 more
core   +1 more source

Unlocking the potential of NMR spectroscopy for precise and efficient quantification of microplastics

open access: yesMicroplastics and Nanoplastics
Precise, fast, and reliable identification and quantification of microplastic contamination are essential for determining their environmental concentrations for risk assessments.
Julia Schmidt   +3 more
doaj   +1 more source

Determination and Occurrence of Phenoxyacetic Acid Herbicides and Their Transformation Products in Groundwater Using Ultra High Performance Liquid Chromatography Coupled to Tandem Mass Spectrometry [PDF]

open access: yes, 2014
This research is funded by the National Development Plan, through the Research Stimulus Fund, administered by the Department of Agriculture, Food and Marine (RS-544) and the Teagasc Walsh Fellowship Scheme.peer-reviewedA sensitive method was developed ...
Coxon, Catherine E.   +4 more
core   +2 more sources

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