Results 101 to 110 of about 130,892 (321)
A Buffered LC-MS Method for Resolving and Quantifying Albiflorin and Paeoniflorin. [PDF]
Biomed ChromatogrABSTRACT Albiflorin and paeoniflorin are bioactive isomers found in Paeoniae Radix Alba, a key component of Traditional Chinese Medicine. Their accurate and simultaneous quantification is essential for pharmacological research. Standard separation methods often rely on LC‐MS using a mobile phase containing 0.1% formic acid. This study demonstrates that
Gazizova A, Altincubuk EH, Oppermann C.
europepmc +2 more sources
The 99th percentile of reference population for cTnI and cTnT assay: Methodology, pathophysiology and clinical implications [PDF]
, 2017 According to recent international guidelines, including the 2012 Third Universal Definiton of Myocardial Infarction by the Joint ESC/ACCF/AHA/WHF Task Force, an increase in cardiac troponin (cTn) levels over the 99th percentile upper reference limit ...
Clerico, Aldo +6 more
core +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]
, 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
Analysis &Sensing, EarlyView.The graphical abstract shows an eco‐friendly approach to fabricating a biodegradable electrochemical sensor. Carbon quantum dot/nickel oxide (CQD/NiO) nanocomposites are synthesized using Aloe arborescens leaf extract, which served as a natural reducing and stabilizing agent.
Nokwanda Ngema +3 more
wiley +1 more source
Roczniki Panstwowego Zakladu Higieny, 2018 Background. One of the important source of food contamination with elements harmful to human health such as lead or cadmium is migration from the articles intended to come into contact with food.
Monika Mania +3 more
doaj +1 more source
MoleculesThis review highlights the advantages of high-precision liquid chromatography with an electrochemical detector (HPLC-ECD) in detecting and quantifying biological samples obtained through intracerebral microdialysis, specifically the serotonergic and ...
B. Guiard, Guillaume Gotti
semanticscholar +1 more source
Analysis &Sensing, EarlyView.The U‐shaped electromembrane extraction with liquid chromatography‐mass spectrometry enables rapid multiclass pesticide screening in soil. The 15 min, low‐solvent workflow achieves high recoveries and robust linearity, while AGREEprep and GAPI assessments highlight a greener profile compared to literature reports, which represents a smart strategy for ...
Rafael O. Martins +9 more
wiley +1 more source
A uracil nitroso amine based colorimetric sensor for the detection of Cu²⁺ ions from aqueous environment and its practical applications [PDF]
, 2015 A simple uracil nitroso amine based colorimetric chemosensor (UNA-1) has been synthesized and screened for its cation recognition ability. Sensor UNA-1 exhibited a high sensitivity and selectivity towards Cu²⁺ ions in aqueous medium in the presence of a ...
Chen, Lingxin +10 more
core +2 more sources
Asia-Pacific Journal of Chemical Engineering, EarlyView.ABSTRACT In this work, we report the synthesis of a novel Ag‐decorated V2O5 nanozyme with intrinsic oxidase‐like activity for the colorimetric detection of Hg2+ ions. The Ag/V2O5 hollow microspheres were synthesized via a simple hydrothermal method followed by Ag nanoparticle decoration and thoroughly characterized by XRD, XPS, SEM, TEM, HRTEM, and EDX.
Zhaoqing Liu, Hengxia Shen, Jiaqi Hu
wiley +1 more source
Enzymatic digestion and selective quantification of underivatised [delta]9-tetrahydrocannabinol and cocaine in human hair using gas chromatography-mass spectrometry. [PDF]
, 2012 Gas chromatography-mass spectrometric (GC-MS) methods for drug analysis routinely employ derivatising reagents. The aim of this paper was to develop a method for the analysis of two recreational drugs, delta-9-tetrahydrocannabinol ([delta](9)-THC) and ...
Barker, James +3 more
core +3 more sources