Purdue Stable Isotope (PSI) facility Analytical Development page

The Michalski lab continues to push the analytical limits of Isotope Ratio Mass Spectrometry by developing new preparation techniques and IRMS interfaces. Our current interests includes:

1) Developing an automated IR laser thermal decomposition interface for analysis of δ¹⁸O, δ¹⁷O,δ¹⁵N, and δ³⁴S in NO₃- and SO₄^2-

2) Development of bacterial-gold reduction method for nanomolar analysis of δ¹⁸O, δ¹⁷O,δ¹⁵N in nitrates.

3) Development of a new method for δ¹⁸O, δ¹⁷O in tropospheric ozone

4) Solid phase extraction techniques for organic clean up of samples

5) Automated HPLC sample separation and cation conversion

6) Multiple isotopologue fragment analysis