Chemical Characteristics of Organic Aerosols in Shanghai: A Study by Ultrahigh‐Performance Liquid Chromatography Coupled With Orbitrap Mass Spectrometry
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Geophysical Research"
DOI: 10.1002/2017jd026930
Abstract: PM2.5 filter samples were collected in July and October 2014 and January and April 2015 in urban Shanghai, and analyzed using ultra-high-performance liquid chromatography (UHPLC) coupled to Orbitrap mass spectrometry (MS). The measured chromatogram-mass spectra… read more here.
Keywords: mass; chemical; liquid chromatography; coupled orbitrap ... See more keywords
Bile acid profiles in bile and feces of obese mice by a high-performance liquid chromatography-tandem mass spectrometry.
Sign Up to like & getrecommendations! Published in 2020 at "Biotechnology and applied biochemistry"
DOI: 10.1002/bab.2055
Abstract: Bile acids (BAs) play a pivotal role in manipulating the development of metabolic diseases. However, due to the compositional complexity and functional variation of BAs, it remains unclear about the changes in BA pool for… read more here.
Keywords: bas; bile feces; bas bile; liquid chromatography ... See more keywords
New chiral stationary phases for liquid chromatography based on small molecules: Development, enantioresolution evaluation and chiral recognition mechanisms.
Sign Up to like & getrecommendations! Published in 2019 at "Chirality"
DOI: 10.1002/chir.23142
Abstract: Recently, we reported the development of new chiral stationary phases (CSPs) for liquid chromatography (LC) based on chiral derivatives of xanthones (CDXs). Based on the most promising CDX selectors, 12 new CSPs were successfully prepared… read more here.
Keywords: small molecules; chromatography based; chiral stationary; liquid chromatography ... See more keywords
Improvement of chiral separation efficiency through temperature control during one time high performance liquid chromatography analysis.
Sign Up to like & getrecommendations! Published in 2022 at "Chirality"
DOI: 10.1002/chir.23444
Abstract: This study examined how manual temperature control affects the separation of two enantiomers of five racemic mixtures using high-performance liquid chromatography (HPLC) in terms of separation factor (α), resolution (Rs), and the number of theoretical… read more here.
Keywords: performance liquid; one time; liquid chromatography; temperature control ... See more keywords
Liposomes as potential masking agents in sport doping. Part 1: analysis of phospholipids and sphingomyelins in drugs and biological fluids by aqueous normal-phase liquid chromatography-tandem mass spectrometry.
Sign Up to like & getrecommendations! Published in 2017 at "Drug testing and analysis"
DOI: 10.1002/dta.1939
Abstract: In the present work, aqueous normal-phase liquid chromatography coupled to tandem mass spectrometry (LC-MS/MS), in different acquisition modes, was employed for the direct analysis and profiling of nine phospholipid classes (phosphatidic acids, phosphatidylserines, phosphatidylethanolamines, lysophosphatidylethanolamines,… read more here.
Keywords: phase liquid; normal phase; aqueous normal; analysis ... See more keywords
Hair testing of propofol by liquid chromatography-tandem mass spectrometry and azo-coupling derivatization.
Sign Up to like & getrecommendations! Published in 2017 at "Drug testing and analysis"
DOI: 10.1002/dta.2190
Abstract: Propofol is a short-acting intravenous hypnotic-amnesiac agent used in the general anesthesia. In recent years propofol has gained importance for recreational use (being able to give euphoria, relaxation, sexual hallucinations and disinhibition) and for suicidal… read more here.
Keywords: chromatography tandem; propofol; liquid; hair ... See more keywords
Chiral analysis of amphetamines in hair by liquid chromatography-tandem mass spectrometry: compliance-monitoring of attention deficit hyperactivity disorder (ADHD) patients under Elvanse® therapy and identification after controlled low-dose application.
Sign Up to like & getrecommendations! Published in 2018 at "Drug testing and analysis"
DOI: 10.1002/dta.2208
Abstract: Amphetamine (AMP) is used as an illicit drug and also for the treatment of attention deficit hyperactivity disorder (ADHD). Respective drugs most often contain the enantiomer (S)-AMP as active compound or (S)-AMP is formed from… read more here.
Keywords: analysis; hair; drug; liquid chromatography ... See more keywords
Direct quantitation of endogenous steroid sulfates in human urine by liquid chromatography-electrospray tandem mass spectrometry.
Sign Up to like & getrecommendations! Published in 2018 at "Drug testing and analysis"
DOI: 10.1002/dta.2413
Abstract: A method based on liquid chromatography-tandem mass spectrometry (LC-MS/MS) for the direct quantitation of endogenous steroid sulfates has been developed to be able to evaluate these metabolites as biomarkers to detect the misuse of endogenous… read more here.
Keywords: mass spectrometry; steroid sulfates; quantitation; mass ... See more keywords
Retrospective analysis for valproate screening targets with liquid chromatography-high resolution mass spectrometry with positive electrospray ionization: An omics-based approach.
Sign Up to like & getrecommendations! Published in 2019 at "Drug testing and analysis"
DOI: 10.1002/dta.2543
Abstract: Liquid chromatography coupled with high-resolution mass spectrometry (LC-HRMS) is an important analytical tool in the systematic toxicological analysis performed in forensic toxicology. However, some important compounds, such as the antiepileptic drug valproate (valproic acid; VPA),… read more here.
Keywords: high resolution; analysis; liquid chromatography; resolution mass ... See more keywords
Profiling cocaine residues and pyrolytic products in wastewater by mixed-mode liquid chromatography-tandem mass spectrometry.
Sign Up to like & getrecommendations! Published in 2019 at "Drug testing and analysis"
DOI: 10.1002/dta.2590
Abstract: This work provides a new analytical method for the determination of cocaine, its metabolites benzoylecgonine and cocaethylene, the pyrolytic products anhydroecgonine and anhydroecgonine methyl ester, and the pharmaceutical levamisole in wastewater. Samples were solid-phase extracted… read more here.
Keywords: chromatography tandem; pyrolytic products; mass; liquid chromatography ... See more keywords
In vitro metabolism of the novel synthetic opioid agonist cyclopropylfentanyl and subsequent confirmation in authentic human samples using liquid chromatography-high resolution mass spectrometry.
Sign Up to like & getrecommendations! Published in 2019 at "Drug testing and analysis"
DOI: 10.1002/dta.2611
Abstract: Novel synthetic opioids (NSOs) are a class of novel psychoactive substances (NPS) that are growing in popularity and presenting a significant public health risk. Included in this class are derivatives of the highly potent analgesic,… read more here.
Keywords: high resolution; chromatography high; novel synthetic; mass ... See more keywords