ASEP MS Student Presentation

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School of Chemistry
David Keir Building
G.C.M.S.
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GCMS / ATDGCMS / Headspace GCMS
Organic liquids
Pre-analysed by GC
Consultation with analyst
G.C.M.S.
Sample requirements
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Concentration @ mg target / ml solvent used
Sample vials supplied by ASEP
Homogeneous
Clean
Mass Spectrometry
• Low and High Resolution
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EI, CI, TOF
Electrospray TOF
MALDI TOF
Organic compounds, Solid or Liquid
Mass Spectrometry
Sample requirements
• Presented in screw top septum sample vials
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Homogeneous
Clean
Pure!
Purity is essential if Accurate Mass data is
required.
Mass Spectrometry
Sample requirements
• ~ 1 mg /ml in a suitable solvent: Always state the
solvent used. When in doubt, consult with the
technician.
• EI/CI: preferred solvent is Dichloromethane.
Alternatives include Hexane, Acetone or methanol
but solvent must be volatile.
• ES: Use Acetonitrile, Methanol or Water ONLY.
• MALDI: preferred solvent is Acetonitrile. Solvent
must be volatile
Sample Reception
• Samples may be submitted during normal working
hours.
• Completed sample forms – done in duplicate, per
sample – must be submitted with samples.
• The ASEP sample log MUST be completed.
• If the sample form or log is incomplete the sample
will be returned unanalysed.
Sample Processing
• Analysis will be in strict chronological
order except where:
• Analysis is suitable for batching by the
analyst
• Similar sample types are being processed
• Samples are urgent
Urgent Samples
• Supervisors consent required
• Request made either directly to Trevor
Sewell or Robin Patrick or via the
appropriate technician.
• Repeated requests for Urgent analysis will
be referred to the Head of School
Reporting
• Results will be attached to the sample
submission form as and when they are ready
• Completed analysis / results will be placed
– on a daily basis – in the ASEP entrance
for collection
Contact
• Contact is at the point of analysis
• Contact is encouraged to ensure you get
what you want
• Unstable samples
CONTACT DETAILS
Trevor Sewell
Manager
Phone x 5580
[email protected]
Contact details
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CHN
Metals
Halogens
GCMS
EI / CI etc
Electrospray
NMR
Wendy McKinney
Mel Curran
Uel Moore
Robin Patrick
Billy Harra
Conor McGrann
Richard Murphy
5580
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4676
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4435
ASEP
SCHOOL OF CHEMISTRY
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