Skip to content

Stable Isotope Laboratory

The Stable Isotope Laboratory is located in the Department of Earth and Planetary Sciences (EPS) on the campus of the University of Tennessee in Knoxville, Tennessee.

We provide stable isotope services for research and commercial users. The lab has two Thermo-Finnigan Delta mass spectrometers and a variety of peripheral devices that enable the measurement of C-H-N-O-S isotopic ratios in a variety of materials. The types of analyses that we can perform and the prices per analysis are listed below.  

If you are interested in measuring stable isotope ratios in the EPS isotope facility, please contact Anthony Faiia and/or Anna Szynkiewicz.

Lab Members:

  • Anna Szynkiewicz – Assistant Professor
  • Anthony Faiia – Laboratory Manager
  • Jessica Ende – Graduate Student (PhD)
  • Ashley Ramsey – Graduate Student (MS)
  • Diego Sanchez – Graduate Student (MS)

Past Lab Members:

  • St. Thomas LeDoux - Graduate Student (MS)
  • Justin Coleman - Undergraduate Student
  • Caleb Smith – Undergraduate Student

Prices of N-C-H-O-S isotope analyses of solid, liquid and gas samples:

Peripheral Measurement Types of material Price per analysis
Costech EA δ15N, % N Organic matter, sediments, etc. $8.00
Costech EA δ13C, % C Organic matter, sediments, etc. $8.00
Costech EA δ15N + δ13C, %N + %C Organic matter, sediments, etc. $10.00
  Weighing and packing Organic matter, sediments, etc. $3.00
  Weighing and packing Hair $5.00
Gas Bench II δ13C and δ18O Carbonates $10.00
  δ13C Dissolved inorganic carbon (DIC) $8.00
  δ13C Dissolved inorganic carbon (DIC) $8.00
  Weighing Carbonates, DIC, DOC, etc. $1.50
  Acid fumigation Carbonate-rich samples $2.00
Gas Bench II/Precon δ15N and δ18O Dissolved NO3 and NO2 $45.00
Gas Bench II/Precon δ13C Methane (under calibration) TBD
Los Gatos Research DLT-100 δ18O + δD Water samples $10.00
TC/EA δD Organic matter, hydrated minerals TBD
Costech EA δ34S Sulfur minerals/chemicals, organic compounds $17.00
TC/EA δ18O Sulfur minerals/chemicals, low temperature minerals, organic compounds $14.00
  Weighing and packing Sulfur minerals/chemicals, organic compounds $3.00
  Precipitation of BaSO4 Water samples $2.00

Prices of other services available in the Stable Isotope Laboratory

Device Measurement Types of material Price per analysis
Dionex ICS-2100 Major cations Water samples $5.00
Dionex ICS-2000 Major anions Water samples $5.00
Dionex ICS-2100 Sulfur speciation Water samples $5.00
  Sulfur sequential extraction SO42-, S°, S-, S2- in sediments and rocks $100.00

Major Instrumentation in the Stable Isotope Laboratory

Thermo-Finnigan
Delta+XL
Mass Spectrometer
Online analysis of stable C, N, O, S, H isotopes and concentrations

Examples of sample types: organic matter, carbonates, nitrates, sulfur minerals, combustible chemicals, gases
Thermo-Finnigan
Delta Plus
Mass Spectrometer
Primarily devoted to online analysis of stable S isotopes and concentrations

Examples of sample types: organic matter, sulfur minerals
Thermo-Scientific
Gas Bench II

LEAP Technologies GC-PAL autosampler
Peripheral for sampling the headspace of vials

Examples of sample types: carbonates, water, DIC, DOC, dissolved NO3, methane, organic compounds
Thermo-Finnigan
High Temperature Conversion/ Elemental Analyzer (TC/EA)
Peripheral for anoxygenic combustion and measurement of O, N, H isotope ratios and content

Examples of sample types: organic matter, minerals/chemicals, water
Costech
Elemental Analyzer ECS4010
Peripheral for combustion and measurements of C, N, S isotope ratios and content

Examples of sample types: organic matter, minerals/chemicals, combustible materials
Gas Chomatograph 6890A

Thermo-Finnigan
GC-Combustion III
Peripheral for combustion of individual organic compounds separable by GC and measurement of C, N, H

Examples of sample types: n-alkanes, etc.
Los Gatos Research
Liquid Water Isotope Analyzer DLT-100
Cavity ringdown laser system for analysis of water samples
Glass Vacuum Lines

Offline preparation system for old-fashioned analysis of solid, liquid and gas samples

Dionex

ICS-2100 & ICS-2000
Ion chromatograph for cation, anion, and sulfur speciation analysis of water samples

Additional Equipment


Sulfur sequential extraction setup – for quantitative analysis and separation of sulfur-bearing species (SO42-, S°, S-, S2-) in sediments and rocks

Ultrasonic Cleaner

Analytical Balances - Mettler AE 163, Fisher Scientific accu-124D Dual Range, Mettler Toledo AX26

Napco E series Vacuum Oven, Model 5831

Fisher Scientific Isotemp Oven, Model 516G
Fisher Scientific Isotemp Oven, Model 725 F

Barnstead Thermolyne Furnace, Type 62700
Thermolyne Type 2000 Furnace

Tuttnauer 2540M Autoclave

Terra Universal Laminar Flow Hood

Heraeus Megafuge 1.0

Labconco FreeZone 6 Freeze Dry System

General Purpose Equipment

  • Portable incubators
  • YSI field meter for water quality (pH, Eh, T, EC, DO, TDS)
  • colorimeter for water chemistry

The flagship campus of the University of Tennessee System and partner in the Tennessee Transfer Pathway.