How do you get your desired mass spectrum?
In the automated service, please follow the requests detailed below. For the organization of more extensive experiments and cooperation requests, please follow the arrangements agreed beforehand with Dr. Birkemeyer.
1. Sample preparation
Fill ~ 1 mg of the solid substance into a labelled 1.5 mL autosampler vial suitable for ESI measurements (see MS Service Manual). Hand in samples suitable and intended for EI as powder in small sample vials. For air-sensitive samples, please use a closed-by-melting glass capillary (EI) or a Schlenk (ESI). The sample vessel must meet the required safety standards with regard to the hazard exposed to our employees when handling the sample. If in doubt, please contact us before submitting the sample. On request, laboratory space is available to a certain extent for filling in suitable vessels and the application of purification steps for special MS analyses.
2. Service form
- relevant safety precautions
- expected structure and sum formula
- molecular weight (mono-isotopic!)
- for EI: boiling point, if known
- synthesis (for interpretation of interference peaks)
- don't forget your contact information (phone number, email address!) and date!
3. Ionization technique
Please tick the required ionization technique, or leave the field blank to let us select the appropriate method.
4. Sensitive samples
Please care for appropriate packing of air-, light- or temperature-sensitive samples (see point 1 or in aluminium foil), make a corresponding note on the sample form and make an appointment before you hand it in.
5. Ask for clarification
Do not hesitate to contact us if you have any questions!
6. Sample delivery
Place the sample(s) labelled with the short name of the sample together with the service form (the latter not applicable for web form) in the blue rack on the „Sample delivery“ shelf in front of the laboratory 173A (Technikum/Analytikum, Linnéstr. 3) or send it by post to:
Institut für Analytische Chemie
Fakultät für Chemie und Mineralogie
7. Sample processing
Samples will be processed according to the ionisation method and their delivery date and are usually measured within 1 to 3 working days at the latest.
8. Sample return
Please collect the measured sample from the rack in front of room 173A as soon as possible. Remaining samples will be disposed after latest one month. On request, an agreement on material transfer can be arranged.
9. Not the expected signal or isotope pattern
If a spectrum does not show the expected signal or isotope pattern, we redirect your sample to an alternative ionization technique which usually extends the processing time to 3-7 working days. You may consider contacting us in case the results are not delivered to you after that time.
10. Raw date of the measurement
Raw data added by an automatically generated pdf report can be downloaded as a zip file from our server. Access to the data server arranged with a VPN and a FTP program at spekserv.chemie.uni-leipzig.de; please obtain the required access details from your working group or on request from us.