Line identification of extreme ultraviolet (EUV) spectra from low-Z impurity ions in EAST tokamak plasmas

LI Lei, L Zhang, XU Zong, S Morita… - Plasma Science and …, 2021 - iopscience.iop.org
… power loss and reduces the ion density of the bulk … line emissions from impurity ions are
crucially important to monitor the behavior of impurities and to minimize the effects of impurities

Identification of pharmaceutical impurities

F Qiu, DL Norwood - Journal of liquid chromatography & related …, 2007 - Taylor & Francis
… peak shapes and resolution through ion‐pairing with the … of the impurity ions due to ion‐pairing
with basic impurities.… , the unknown impurity typically needs to be isolated for off‐line

Impurity determination in electronic materials by accelerator mass spectrometry

FD McDaniel, JM Anthony, JF Kirchhoff… - Nuclear Instruments and …, 1994 - Elsevier
… Thus, the primary ion beamline and the secondary ion extraction lines are at 45” with …
identification and predicted total contamination level are given for each element. The horizontal line

Automatic impurity spectral line identification algorithm with noise reduction for fusion plasmas

H Shin, I Song, YH An, W Choe - Fusion Engineering and Design, 2020 - Elsevier
… In this study, a numerical code for identifying impurity line spectra was developed and … ionic
states of impurities annotated on each line spectrum, demonstrating that line identification is …

Spectroscopic determination of impurity influx from localized surfaces

K Behringer, HP Summers, B Denne… - Plasma physics and …, 1989 - iopscience.iop.org
… of ionization, suitable spectrum lines for observation generally fall … relates line-of-sight integrals
of spectral line emission to ion- … If Z is chosen sufficiently small so that all the impurity ions

Radial density profiles of highly ionized metallic impurity ions in RF-heated H-mode plasmas in EAST

Y Cheng, L Zhang, S Morita, X Yang… - … on Plasma Science, 2022 - ieeexplore.ieee.org
… the radial profile of impurity line emissions. In this work, metallic impurity lines emitted in the
… Based on the line identification, radial intensity profiles of the impurity line emissions are …

Measurement of impurity lines with two-crystal x-ray spectrometers on EAST

Y Xinshuai, HU Ruiji, C Jun, W Fudi… - Plasma Science and …, 2018 - iopscience.iop.org
… shift of characteristic spectral lines of certain impurity ions without adverse effects in plasma
[… correct plasma temperature, identifying spectral lines and impurities were necessary for two-…

Trace level impurity method development with high‐field asymmetric waveform ion mobility spectrometry: systematic study of factors affecting the performance

E Champarnaud, AMF Laures… - … Journal Devoted to …, 2009 - Wiley Online Library
… Many analytical techniques are used to identify these impurities including high-…
identification of these effects. On this plot, the normal distribution is represented by a straight line

Isolation and identification of four major impurities in capreomycin sulfate

G Liu, B Luan, G Liang, L Xing, L Huang… - … of Chromatography A, 2018 - Elsevier
… , but it is only used as a second line drug due to its adverse reactions. Literature has …
and its impurities, but it is hard to be used for the preparative purpose. In this study, this ion-…

Investigation of on-line reversed-phase liquid chromatography–gas chromatography–mass spectrometry as a tool for the identification of impurities in drug substances

D Jong, GJ áde Jong, UA TháBrinkman - Analyst, 1996 - pubs.rsc.org
… via an in-line coupled anion-exchange micromembrane inserted between the LC and GC
parts of the system. MSA ions were exchanged with hydroxide ions present in large excess in …