 | |
Displaying ei ms PowerPoint Presentations
GC and GC-MS - University of Massachusetts Boston - a student ... PPT
Presentation Summary : ... Electron impact/chemical ionization (EI/CI) Mass spectrometry FIDs Effluent exits column and enters an air/hydrogen flame The gas-phase solute is pyrolized to ...
Source : http://alpha.chem.umb.edu/chemistry/ch361/GC%20and%20GC-MS.ppt
Conversion of Agilent EI GC/MSD Systems from Helium to ... PPT
Presentation Summary : Question: Have You Ever Tried Converting Your GC/MS From Helium To Hydrogen Carrier Gas? Answer 1: “No. Never thought of trying it. Too busy.”
Source : http://www.chem.agilent.com/Library/technicaloverviews/Public/Converting_Agilent_GCMS_to_Hydrogen_Carrier_Gas_Final.pptx
Mass Spectrometry - Welcome to Winona State University ... PPT
Presentation Summary : Example of EI MS CI = Chemical Ionization Chemical ionization is a “soft” ionization method. Much less bond breaking occurs than in EI.
Source : http://course1.winona.edu/tnalli/s08/ms1a.ppt
Introduction to Organic Mass Spectrometry PPT
Presentation Summary : ... and APCI ionization EI Fragmentation A Handful of MS Applications Why Mass Spectrometry Information is composition-specific Very selective analytical technique ...
Source : http://msf.chem.indiana.edu/docs/Introduction%20to%20Mass%20Spectrometry%20sept2010.ppt
Introduction to Organic Mass Spectrometry PPT
Presentation Summary : ... + 14.007 + 15.999(3) = 285.34 Da Yet this is not the mass we observe 285.136 is observed by EI-MS Molecular weight is calculated assuming a natural ...
Source : http://msf.chem.indiana.edu/training/Introduction%20to%20Mass%20Spectrometry%20july2008.ppt
Chem 347 Master Slide - Organic Chemistry PPT
Presentation Summary : The base peak may, or may not, be the molecular ion; it usually is not in EI MS (Electron Impact), but it can more probably be so in CI MS (Chemical Ionization).
Source : http://organic.wsu.edu/files/Chem%20546%20Lectures/Lecture%204c%20MS%20Intro.ppt
Presentation Summary : The base peak may, or may not, be the molecular ion; it usually is not in EI MS (Electron Impact Mass Spectrometry), but it can more probably be so in CI MS ...
Source : http://organic.wsu.edu/files/Chem%20347%20Lectures/Chem%20347%20Lecture%203-e%20MS%20Intro.ppt
Organic Mass Spectrometry - UCO - Biology PPT
Presentation Summary : Organic Mass Spectrometry Interpretation of Mass Spectra Part 3 ... I EI MS reactions are unimolecular (as opposed to laser ablation ionization) ...
Source : http://www.biology.uco.edu/chemistry/Vonminden/files/MS%20Interpretation%20part%203.ppt
Mass Spectrometry in BioTechnology PPT
Presentation Summary : Strongly influences development of Proteomics field Electron Impact (EI) Mass Spectrometry Up until 1980’s, most mass spec is “chemical” analysis ...
Source : http://www.chemistry.jhu.edu/Spectrometry/Instrumental%20Methods%20Mass%20Spectrometry.ppt
organic.ppt - Trinity College Dublin - The University of ... PPT
Presentation Summary : Chemical ionisation Used to confirm molecular weight Known as a “soft” ionisation technique Differs from EI in that ... Mass Spectrometry An Hybrid ...
Source : http://www.tcd.ie/CMA/misc/organic.ppt
Synthesis of Oxadiazole Derivatives for Use in Supramolecular ... PPT
Presentation Summary : ... Electron Impact Mass Spectroscopy (EI-MS) www.specs.com EI-MS = 234 g/mol EI-MS = 222 g/mol EI-MS = 218 g/mol EI-MS = 223 g/mol * * * * ...
Source : http://realscience.breckschool.org/upper/research/2005-06Photos/Powerpoints2006/Weiss.ppt
Presentation Summary : Example Given spectra for an unknown compound: IR, MS, and NMR. ... * * Figure 14.1 Schematic diagram of an electron ionization mass spectrometer (EI MS).
Source : http://academic.brooklyn.cuny.edu/chem/howell/chem%2051%20Lecture%20Slides/Chap%2014%20Mass%20Spec.ppt
Cheminformatics and mass spectrometry course PPT
Presentation Summary : Time [min] m/z Normalized Intensity Normalized Intensity Chromatogram (GC-MS) Mass spectrum (EI) Problems with manual peak picking or by-eye selection: ...
Source : http://fiehnlab.ucdavis.edu/staff/kind/Teaching/cheminformatics-ms-kind-course-6.ppt
Presentation Summary : ... 2.48 (m, 2H, CH2), 4.33 (s, 1H, CH), 6.05 (s, 1H), 6.32 (s, 1H), 7.07 (s, 2H), 7.48 (s, 1H) ppm; EI-MS (m/z): 284 (M+). C16H16N2O3: % calcd C, 67.59; H, 5.67 ...
Source : http://www.orientaluniversity.in/wp-content/uploads/15.ppt
Organic Mass Spectrometry - UCO - Biology PPT
Presentation Summary : Organic Mass Spectrometry ... predicted from mechanisms of ion decompositions Library Databases Databases are critical for even the most grizzled MS veterans EI ...
Source : http://www.biology.uco.edu/chemistry/Vonminden/files/MS%20Interpretation.ppt
Presentation Summary : Adduct ions/multiply charged ions (LC/MS) Alternate ionization techniques (EI/CI and APCI/ESI) Note features of the molecular ion (obvious heteroatoms/nitrogen rule) ...
Source : http://www.pqri.org/workshops/leach_ext/imagespdfs/presentations/Presentation-4.ppt
Presentation Summary : ... Fragments sent to mass analyzer Most commonly used in GC-MS EI Fragmentation of CH3OH CH3OH CH3OH+ CH3OH CH2O=H+ + H CH3OH + CH3 + OH CHO=H+ + H CH2O=H+ ...
Source : http://bioinformatics.ca/files/CBW%20-%20presentations/Metabolomics_Edmonton2011_Module%201/Metabolomics_Edmonton2011_Module%201.ppt
Introduction to Mass Spectrometry - Houston Web Designers ... PPT
Presentation Summary : Outline Basic Chemistry Analytical Chemistry Mass Spectrometry Types of Ion Sources EI, CI, ESI, APCI, APPI, MALDI Types of MS Ion Traps, Quads, FT-ICR, ...
Source : http://www.e-cats.com/chemistry/01measurements/IntrotoMassSpec.ppt
Debromination of the Flame Retardant DecaBDE: Is It ... PPT
Presentation Summary : retardant (FR) using full scan GC/EI-MS and GC/ECNI-MS. When a FR was positively identified (Mass Spec Database, NIST 2005)
Source : http://www.ncel.net/articles/Toxics/Updates-TDCPP%20NCEL%20080711_to%20Adam.pptx
