Results 11 to 20 of about 157,168 (328)

Physical model for multi-point normalization of dual-inlet isotope ratio mass spectrometry data. [PDF]

Anal Bioanal Chem, 2022
Srivastava A.
europepmc   +3 more sources

Quantifying precision and accuracy of measurements of dissolved inorganic carbon stable isotopic composition using continuous‐flow isotope‐ratio mass spectrometry [PDF]

, 2014
RATIONALE: We describe an analytical procedure that allows sample collection and measurement of carbon isotopic composition (δ13CV-PDB value) and dissolved inorganic carbon concentration, [DIC], in aqueous samples without further manipulation post field
Susan Waldron, E. M. Scott, Leena Vihermaa, Jason Newton   +3 more
openalex   +4 more sources

Measurements of Isotope Ratio by Mass Spectrometry(II)

Journal of the Mass Spectrometry Society of Japan, 1962
Toshizo Titani, Mituko Kobayakawa
openalex   +4 more sources

Gas Chromatography Combustion Isotope Ratio Mass Spectrometry for Improving the Detection of Authenticity of Grape Must. [PDF]

J Agric Food Chem, 2020
Perini M, Strojnik L, Paolini M, Camin F.   +3 more
europepmc   +3 more sources

Sampling systems for isotope‐ratio mass spectrometry of atmospheric ammonia

Rapid Communications in Mass Spectrometry, 2005
Abstract Passive and active ammonia (NH 3 ) sampling devices have been tested for their nitrogen (N) capture potential and δ 15 N fractionation effects. Several sampling techniques produced significantly different
Richard Skinner, Phil Ineson, Helen Jones, D. Sleep, Mark R. Theobald   +4 more
openalex   +6 more sources

Traceability of animal protein byproducts in ruminants by multivariate analysis of isotope ratio mass spectrometry to prevent transmission of prion diseases. [PDF]

J Venom Anim Toxins Incl Trop Dis, 2019
Ferreira RS, da Silva DAF, Biscola NP, Sartori MMP, Denadai JC, Jorge AM, Dos Santos LD, Barraviera B.   +7 more
europepmc   +3 more sources

Energy expenditure and weight-related behaviors in youth with Down syndrome: a protocol

Frontiers in Pediatrics, 2023
BackgroundThe consequences of obesity are ominous, yet healthcare professionals are not adequately preventing or treating obesity in youth with Down syndrome (DS).
Michele Polfuss, Michele Polfuss, Linda G. Bandini, Michele N. Ravelli, Zijian Huang, Andrea Moosreiner, Dale A. Schoeller, Chiang-Ching Huang, Dan Ding, Cristen Berry, Emma Marston, Azeem Hussain, Timothy C. Shriver, Kathleen J. Sawin, Kathleen J. Sawin   +14 more
doaj   +1 more source

Study on Specific Carbon Isotope Fractionation of n-Alkanes during Column Chromatography Separation-Molecular Sieve Complexation Adsorption

Yankuang ceshi, 2021
BACKGROUND Before analyzing the carbon isotopes of n-alkanes by gas chromatography-gas isotope mass spectrometry (GC-IRMS), it is necessary to pre-separate and enrich n-alkanes and isoparaffins in saturated hydrocarbon samples. Whether the carbon isotope
DONG Hao-wei, ZHAO Jia-yu, ZENG Fan-gang, XIE Man-man, SHANG Wen-yu, WANG Shu-xian, SUN Qing   +6 more
doaj   +1 more source

State-of-the-Art Analytical Approaches for Illicit Drug Profiling in Forensic Investigations

Molecules, 2022
In forensic chemistry, when investigating seized illicit drugs, the profiling or chemical fingerprinting of drugs is considered fundamental. This involves the identification, quantitation and categorization of drug samples into groups, providing ...
Reem Ahmed, Mohamad J. Altamimi, Mayssa Hachem   +2 more
doaj   +1 more source

mzMatch-ISO: an R tool for the annotation and relative quantification of isotope-labelled mass spectrometry data [PDF]

, 2013
<p>Motivation: Stable isotope-labelling experiments have recently gained increasing popularity in metabolomics studies, providing unique insights into the dynamics of metabolic fluxes, beyond the steady-state information gathered by routine mass ...
Achuthanunni Chokkathukalam, Andris Jankevics, Breitling, Bueschl, Chaneton, Creek, Darren J. Creek, Dunn, Fiona Achcar, Gipson, Jankevics, Kanehisa, Le, Melamud, Michael P. Barrett, Rainer Breitling, Rogers, Scheltema, Smith, t’Kindt, Weber, Wishart   +21 more
core   +6 more sources