Results 21 to 30 of about 61,869 (301)

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

Development and application of an UHPLC-MS/MS method for the simultaneous determination of 17 steroidal hormones in equine serum [PDF]

open access: yes, 2017
A new, fast and simple analytical method that is able to identify and quantify simultaneously 17 steroid hormones and metabolites (Pregnenolone, 17-OH-Pregnenolone, Progesterone, 17-OH Progesterone, Androsterone, Androstenedione, DHEA, DHEAS ...
Allis   +20 more
core   +1 more source

Determination of Paraquat in Arabidopsis Tissues and Protoplasts by UHPLC-MS/MS

open access: yesBIO-PROTOCOL, 2023
Paraquat is a cost-effective herbicide, widely used in many countries, that can induce severe oxidative stress in photosynthetic tissues. Studying plant herbicide resistance or antioxidant stress mechanisms requires determining the cellular paraquat level when plants are treated by paraquat.
Mingming Zhao   +5 more
openaire   +3 more sources

Application of chromatographic methods for quality control of cannabinoid impurities in products containing Cannabidiol [PDF]

open access: yesPharmacia
Strict quality control of impurities in legitimate cannabidiol products and in cannabis “novel foods” is necessary due to the increased health risks from side effects associated with these impurities.
Dobrina Tsvetkova   +2 more
doaj   +3 more sources

Determination by UHPLC – UV – MS of polyphenol content of Amaranthus retroflexus

open access: yesNotulae Botanicae Horti Agrobotanici Cluj-Napoca, 2023
Having a very large area globally, the genus Amaranthus has been known since ancient times and used as a medicinal plant used in the treatment of various ailments.
Aida P. SĂRĂCIN   +6 more
doaj   +1 more source

Rapid Environmental Impact Assessment of Penicillin G in a Veterinary Product Using an Original Software Method and Monitoring by SPE-Online-UHPLC-MS/MS

open access: yesMolecules, 2023
Veterinary antibiotics have become a major concern due to potential environmental effects. This study presents an investigation of the exposure and environmental effects of the veterinary medicinal product in powder form, administered in the drinking ...
Viviana Carmen Ciucă   +6 more
doaj   +1 more source

Optimisation of pressurized liquid extraction using a multivariate chemometric approach for the determination of anticancer drugs in sludge by ultra high performance liquid chromatography–tandem mass spectrometry [PDF]

open access: yes, 2013
The present paper describes an analytical method for the determination of 2 widely administered anticancer drugs, ifosfamide and cyclophosphamide, contained in sewage sludge. The method relies on the extraction from the solid matrix by pressurized liquid
Albasi, Claire   +5 more
core   +4 more sources

Two New Fumarprotocetraric Acid Lactones Identified and Characterized by UHPLC-PDA/ESI/ORBITRAP/MS/MS from the Antarctic Lichen Cladonia metacorallifera

open access: yesSeparations, 2022
Lichens are symbiotic organisms between algae and fungi, which are makers of secondary compounds named as lichen substances. Hyphenated techniques have significantly helped natural product chemistry, especially UHPLC/ESI/MS/MS in the identification ...
Beatriz Sepúlveda   +4 more
doaj   +1 more source

Determination of lesinurad in rat plasma by a UHPLC–MS/MS assay [PDF]

open access: yesChemistry Central Journal, 2017
Lesinurad is an oral inhibitor of urate-anion exchanger transporter 1 and has been approved by the US Food and Drug Administration for combination therapy with a xanthine oxidase inhibitor for the treatment of hyperuricemia associated with refractory gout.
Xiao-Yang Zhou   +6 more
openaire   +3 more sources

Residue analyses and exposure assessment of the Irish population to nitrofuran metabolites from different food commodities in 2009–2010 [PDF]

open access: yes, 2013
peer-reviewedAn exposure assessment to nitrofuran residues was performed for three human populations (adults, teenagers and children), based on residue analyses of foods of animal origin (liver, honey, eggs and aquaculture) covering the 2-year period ...
Conroy, Emma-Rose   +4 more
core   +1 more source

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