Equipment full name:
Thermo Scientific Triton Plus, Thermal Ionization Mass Spectrometer (TIMS)
Location: 18 Hosler Building
Description: The TIMS is a magnetic sector mass spectrometer designed for high precision isotope ratio measurements. Our facility, built around the Thermo Scientific Triton Plus TIMS, specializes in analysis of radiogenic isotopes (mainly 87Sr/86Sr), whose isotopic compositions are determined by internal normalization. We can also analyze stable isotopic systems whose isotopic compositions are determined using an isotopic double spike, though at the present time only Ca isotopes have been developed. Compared to MC-ICP-MS, the TIMS offers higher precision alternatives for appropriate isotopic systems (e.g., there is no Kr interference on TIMS as there is on MC-ICP-MS for St isotope).
Currently this lab can offer services on the following isotopic systems; we are always willing to discuss method development with users:
-
- Sr isotopic analysis
- Ca isotopic analysis *
- Nd isotopic analysis
- Rb-Sr geochronology
- Sm-Nd geochronology
* Collaborations only at present (contact Matthew Fantle if interested).
Sample preparation and requirements: Prior to analysis, samples are acid-digested and elements of interest are purified using traditional ion chromatography techniques. For solid samples, higher spatial resolution isotopic analysis can be achieved using an ESI Micromill. See information on sample preparation services provided by LIME and sample requirements. Contact TIMS analyst prior to sample drop-off to ensure that your samples meet requirements.
Request analysis: Samples may be submitted to the TIMS laboratory for analysis by navigating to the Request analysis page and clicking on the ‘Submit’ button.
Click on this link to review sample labeling requirements.
Training: Student researchers and faculty who may be interested in training on instrument operation and data interpretation, and other peripheral equipment in the laboratory, please contact the TIMS analyst to schedule training. While the number of training hours may vary, depending on the student’s knowledge and analytical skills, we require a minimum of eight supervised training hours prior to allowing the student to independently operate the instrument or other peripheral equipment in the laboratory. Access to the facility may be granted once full training requirements are satisfied.
CURRENT LIME FEE SCHEDULE
| Equipment Time (/hr) | Staff Time (/hr) | |
|---|---|---|
| INTERNAL PSU | $74.42 | $65.54 |
| EXTERNAL ACADEMIC | $183.38 | $103.82 |
| EXTERNAL NON-ACADEMIC | $189.17 | $107.09 |
| *please contact us for a detailed cost breakdown | ||
Techniques:
Thermal ionization mass spectrometry