Purdue Stable Isotope Facility

Overview of Services

Many of the PSI lab’s services are now available to researchers at Purdue and elsewhere on a contract basis. Analytical services currently offered include:

  • δ²H and δ18O water analyses (precision < 1‰, 0.2‰)
  • δ18O organic solid analyses on TCEA-IRMS (precision < 0.3‰)
  • δ13C, δ15N, %C, and %N organic and inorganic solids on EA-IRMS (precision < 0.2‰, 0.3‰)
  • δ13C gas from organic respiration on TGA-IRMS (precision < 0.2‰)
  • δ15N and δ18O of denitrifiers on continuous-flow IRMS using headspace extraction (precision < 0.1‰, 0.5‰)
  • δ15N, δ18O, and ∆17O of denitrifiers on continuous-flow IRMS using headspace extraction+gold tube thermal decomposition (precision < 0.4‰, 0.1‰, 0.3‰)
  • Compound-specific analysis of plant and soil lignin on a Shimadzu gas chromatograph quadupole mass spectrometer
  • A range of chemical and physical sample preparation services

 

Leadership

Leadership Personnel

Dr. Timothy Filley, Professor
filley@purdue.edu
(765)494-6581

 

Dr. Greg Michalski, Associate Professor
gmichals@purdue.edu
(765)494-3704

 

Dr. Lisa Welp, Assistant Professor
lwelp@purdue.edu
(765)496-6896

 

Core Staff

Jani Sparks, Stable Isotope Specialist
jmsparks@purdue.edu
(765)494-0289

 

Getting Started

**For Purdue individuals: First-time users should click "Register"; then select "Register using your Purdue Credentials" in upper right.  Returning students will click "Sign In"

**For Non-Purdue individuals: Before you register, you must be assigned a Business Partner Number and given Purdue credentials to register/login.  

    Please contact the center manager for further information.

 

**In addition, the Purdue Stable Isotope Facility requires 'Access Approval' to use it's core.  Please contact Jani Sparks to gain access to this core.

Location and hours of operation

Hours      Location

Monday - Friday 8:00 am - 4:00 pm 

     550 Stadium Mall Dr
     West Lafayette, IN 47907

Links and Resources

  1. Purdue Stable Isotope Facility

Contacts

Name Role Phone Email Location
Dr. Tim Filley
Professor
 
(765)494-6581
 
filley@purdue.edu
 

 
Dr. Greg Michalski
Associate Professor
 
(765)494-3704
 
gmichals@purdue.edu
 

 
Dr. Lisa Welp
Assistant Professor
 
(765)496-6896
 
lwelp@purdue.edu
 

 

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