Below is a list of the best What is chemical ionization voted by users and compiled by us, invite you to learn together
1 Mass Spectrometry Introduction | Department of Chemistry | University of Pittsburgh
- Author: chem.pitt.edu
- Published Date: 06/13/2022
- Review: 4.99 (635 vote)
- Summary: Matrix-assisted laser desorption/ionization (MALDI) is a technique to allows the high molecular weight compounds such as organic macro molecules and labile
- Matching search results: The fragmentation pattern of protonated molecules obtained under CI conditions may be different from that of the molecular ions observed under EI conditions. In CI mass spectrometry the molecules of a vaporized sample are ionized by a set of reagent …
2 Atmospheric Pressure Chemical Ionization Source, APCI | Agilent
- Author: agilent.com
- Published Date: 04/19/2022
- Review: 4.67 (262 vote)
- Summary: Atmospheric pressure chemical ionization (APCI) is a popular complementary soft ionization technique to electrospray. It is commonly used to analyze small
- Matching search results: The fragmentation pattern of protonated molecules obtained under CI conditions may be different from that of the molecular ions observed under EI conditions. In CI mass spectrometry the molecules of a vaporized sample are ionized by a set of reagent …
3 Chemical ionization – MS Terms Wiki
- Author: mass-spec.lsu.edu
- Published Date: 07/15/2022
- Review: 4.43 (301 vote)
- Summary: · The process may involve transfer of an electron, a proton, or other charged species between the reactants. Note 1: When a positive ion results
- Matching search results: The fragmentation pattern of protonated molecules obtained under CI conditions may be different from that of the molecular ions observed under EI conditions. In CI mass spectrometry the molecules of a vaporized sample are ionized by a set of reagent …
4 Atmospheric Pressure Chemical Ionization – MagLab
- Author: nationalmaglab.org
- Published Date: 02/23/2022
- Review: 4.37 (559 vote)
- Summary: · Atmospheric pressure chemical ionization (APCI), a widely used ionization technique in mass spectrometry, is advantageous for its ability to
- Matching search results: The fragmentation pattern of protonated molecules obtained under CI conditions may be different from that of the molecular ions observed under EI conditions. In CI mass spectrometry the molecules of a vaporized sample are ionized by a set of reagent …
5 Chemical ionization – chemeurope.com
- Author: chemeurope.com
- Published Date: 06/04/2022
- Review: 4.04 (324 vote)
- Summary: Chemical ionization (CI) is an ionization technique used in mass spectrometry. … With chemical ionization, the ions produced have little excess energy which
- Matching search results: The fragmentation pattern of protonated molecules obtained under CI conditions may be different from that of the molecular ions observed under EI conditions. In CI mass spectrometry the molecules of a vaporized sample are ionized by a set of reagent …
6 Fiehn Lab – Chemical Ionization
- Author: fiehnlab.ucdavis.edu
- Published Date: 07/01/2022
- Review: 3.82 (322 vote)
- Summary: is a soft ionization method used for the detection of quasimolecular ions, hence one can calculate a molecular formula. Another useful approach is to
- Matching search results: This chapter from Mass Spectrometry – A Textbook by Jürgen H. Gross gives a short and comprehensive overview about chemical ionization for mass spectrometry. Gas phase chemistry topics are discussed and several examples and illustration round up …
7 Chemical Ionization Mass Spectrometry: Applications for the In Situ
- Author: liebertpub.com
- Published Date: 12/14/2021
- Review: 3.6 (281 vote)
- Summary: · One commonly used technique for extraterrestrial in situ instrumentation is MS, an analytical technique in which chemical species in a sample
- Matching search results: This chapter from Mass Spectrometry – A Textbook by Jürgen H. Gross gives a short and comprehensive overview about chemical ionization for mass spectrometry. Gas phase chemistry topics are discussed and several examples and illustration round up …
8 AMT – Multi-scheme chemical ionization inlet (MION) for fast switching of reagent ion chemistry in atmospheric pressure chemical ionization mass spectrometry (CIMS) applications
- Author: amt.copernicus.org
- Published Date: 10/16/2021
- Review: 3.55 (531 vote)
- Summary: Multi-scheme chemical ionization inlet (MION) for fast switching of reagent ion chemistry in atmospheric pressure chemical ionization mass spectrometry (CIMS)
- Matching search results: Chemical ionization mass spectrometry (CIMS) is a versatile analysis technique that enables detection of gas-phase molecular constituents at atmospheric pressure and at concentrations as low as 105 cm−3 (Munson and Field, 1966; Munson, 1977; Eisele …
9 What is chemical ionization-mass spectrometry (CI-MS)? | Socratic
- Author: socratic.org
- Published Date: 10/29/2021
- Review: 3.22 (262 vote)
- Summary: CI is a lower-energy process than EI. It often yields less fragmentation and a simpler spectrum. A CI spectrum usually has an easily
- Matching search results: Chemical ionization mass spectrometry (CIMS) is a versatile analysis technique that enables detection of gas-phase molecular constituents at atmospheric pressure and at concentrations as low as 105 cm−3 (Munson and Field, 1966; Munson, 1977; Eisele …
10 Mass Spectrometry Tutorial (Dr. Kamel Harrata) | Chemical Instrumentation Facility | Iowa State University
- Author: cif.iastate.edu
- Published Date: 05/29/2022
- Review: 3.03 (282 vote)
- Summary: For organic chemists, Chemical Ionization (CI) is especially useful technique when no molecular ion is observed in EI mass spectrum, and also in the case of
- Matching search results: MALDI is often used with time-of-flights mass spectrometers ( TOF ) due to the pulsing nature of the technique, and the mass range capability. Molecular weights up to few hundreds of daltons could be measured. Comparison of MALDI and ESI ionization …
11 Chemical Ionization | School of Chemical Sciences at Illinois
- Author: scs.illinois.edu
- Published Date: 11/21/2021
- Review: 2.88 (156 vote)
- Summary: It is ionized by an electron beam and the resulting ions undergo a complex series of ion-molecule reactions to produce species such as CH5+ in methane. These
- Matching search results: MALDI is often used with time-of-flights mass spectrometers ( TOF ) due to the pulsing nature of the technique, and the mass range capability. Molecular weights up to few hundreds of daltons could be measured. Comparison of MALDI and ESI ionization …
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12 Atmospheric pressure chemical ionization source. 1. Ionization of compounds in the gas phase – PubMed
- Author: pubmed.ncbi.nlm.nih.gov
- Published Date: 01/05/2022
- Review: 2.69 (69 vote)
- Summary: · A novel chemical ionization source for organic mass spectrometry is introduced. This new source uses a glow discharge in the flowing
- Matching search results: MALDI is often used with time-of-flights mass spectrometers ( TOF ) due to the pulsing nature of the technique, and the mass range capability. Molecular weights up to few hundreds of daltons could be measured. Comparison of MALDI and ESI ionization …
13 3.2: Chemical Ionization – Chemistry LibreTexts
- Author: chem.libretexts.org
- Published Date: 09/22/2021
- Review: 2.67 (88 vote)
- Summary: · Chemical Ionization (CI) is a soft ionization technique that produces ions with little excess energy. As a result, less fragmentation is
- Matching search results: MALDI is often used with time-of-flights mass spectrometers ( TOF ) due to the pulsing nature of the technique, and the mass range capability. Molecular weights up to few hundreds of daltons could be measured. Comparison of MALDI and ESI ionization …
14 IUPAC – chemical ionization (C01026)
- Author: goldbook.iupac.org
- Published Date: 09/06/2022
- Review: 2.58 (171 vote)
- Summary: ionization. species are formed when gaseous molecules interact with ions. The process may involve transfer of an electron, ; proton. or other charged species
- Matching search results: MALDI is often used with time-of-flights mass spectrometers ( TOF ) due to the pulsing nature of the technique, and the mass range capability. Molecular weights up to few hundreds of daltons could be measured. Comparison of MALDI and ESI ionization …
15 Chemical Ionization – GulfLINK
- Author: gulflink.health.mil
- Published Date: 05/01/2022
- Review: 2.51 (137 vote)
- Summary: In CI, ion molecule reactions occur between ionized reagent gas molecules (G) and volatile analyte neutral molecules (M) to produce analyte ions. Pseudo-
- Matching search results: MALDI is often used with time-of-flights mass spectrometers ( TOF ) due to the pulsing nature of the technique, and the mass range capability. Molecular weights up to few hundreds of daltons could be measured. Comparison of MALDI and ESI ionization …
