Results 1 to 10 of about 140,235 (260)

Absolute quantification of tumor necrosis factor-alpha by isotope dilution mass spectrometry [PDF]

open access: yesFrontiers in Chemistry
Tumor necrosis factor-α (TNF-α) is an important inflammatory mediator and has been widely recognized as a diagnostic biomarker for various autoimmune and infectious diseases in clinical practice, such as rheumatoid arthritis.
Chenchen Bao   +8 more
doaj   +2 more sources

Isotope Dilution Analysis for Particle Mass Determination Using Single-Particle Inductively Coupled Plasma Time-of-Flight Mass Spectrometry: Application to Size Determination of Silver Nanoparticles [PDF]

open access: yesNanomaterials, 2023
This paper describes methodology based on the application of isotope dilution (ID) in single-particle inductively coupled plasma time-of-flight mass spectrometry (spICP-ToFMS) mode for the mass determination (and sizing) of silver nanoparticles (AgNPs ...
Maite Aramendía   +5 more
doaj   +2 more sources

Determination of Zearalenone and Its Derivatives in Feed by Gas Chromatography–Mass Spectrometry with Immunoaffinity Column Cleanup and Isotope Dilution [PDF]

open access: yesToxins, 2022
In this study, a gas chromatography–mass spectrometry (GC-MS) method was established for the determination of zearalenone and its five derivatives in feed, including zearalanone, α-zearalanol, β-zearalanol, α-zearalenol, and β-zearalenol.
Sunlin Luo   +7 more
doaj   +2 more sources

Optimization of double isotope dilution [PDF]

open access: yesJournal of Analytical Atomic Spectrometry, 2022
A piece of code is provided to easily implement double isotope dilution to obtain the lowest uncertainty.
Quemet, Alexandre, Baghdadi, Sarah
openaire   +1 more source

Research on Isotope Dilution Gamma Spectroscopy for Determining Plutonium Concentration

open access: yesYuanzineng kexue jishu, 2023
Preliminary validation of isotope dilution gamma spectroscopy (IDGS) for plutonium concentration measurement was investigated in this study. A high 239Pu abundance plutonium solution was used as an isotope dilution agent.
WANG Yan;LIU Hongbin;HE Lixia;XU Xiaoming
doaj   +1 more source

Expanded uncertainty modeling of the uranium isotope dilution standards

open access: yesJournal of Analytical Science and Technology, 2021
In this paper, a statistical uranium isotope dilution mass spectrometry approach is presented to simulate the wide range of spike-sample mixed ratios of 235U/238U, in terms of their related expanded uncertainties and uncertainty budget indexes. To obtain
Altug Hasozbek
doaj   +1 more source

PoolDilutionR: An R package for easy optimization of isotope pool dilution calculations

open access: yesMethods in Ecology and Evolution, 2023
Isotopic pool dilution is a powerful approach to quantify gross biogeochemical transformation rates, but remains seldom used despite its potential. To facilitate broader implementation of pool dilution methods, we present a user‐friendly R package that ...
Kendalynn A. Morris   +6 more
doaj   +1 more source

Synthesis and Characterization of Stable Isotope Deuterium-Labelled Higenamine

open access: yesJournal of Isotopes, 2021
Stable isotope labelled internal standards combined with isotope dilution mass spectrometry can offer an analytical method with strong anti-interference capability, good accuracy and precision for the detection of higenamine.
HAN Shilei;XU Yin;CHEN Juling;YANG Lifeng;ZHANG Lei
doaj   +1 more source

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