Office of Science

Analytical: Total Organic Carbon Analyzer (TOC)

Quick Specs

  • Analytes: TC, IC, TOC, NPOC, and POC.
  • Method: Combustion/non-dispersive infrared gas analysis method
  • Combustion temperature: 680°C
  • Measuring range: 4 ppb to 4000 ppm TOC (to 5000 ppm for IC, to 400 ppm for POC)
  • Sample injection volume: 4 to 2000 μL

SSM-5000A Solid Sample Module

  • Analyte: TC, IC, TOC ( = TC - IC)
  • Method: TC: Catalytically aided combustion oxidation at 900°C
    IC: Pre-acidification, oven temperature 250°C
  • Measuring range: TC: 0.1 mg to 30 mg carbon
    IC: 0.1 mg to 20 mg carbon
  • Sample amount: 1 g (aqueous content < 0.5 g)

The carbon analyzer is used to analyze total carbon (TC), inorganic carbon (IC), total organic carbon (TOC), purgeable organic carbon (POC), and non-purgeable organic carbon (NPOC) in solid or liquid samples.

The system comprises a Shimadzu TOC-5000A TOC analyzer, a Shimadzu ASI-5000A autosampler, and a Shimdazu SSM-5000A solid sample module. The TOC-5000A has ultralow sensitivity and measures from 4 ppb to 4000 ppm of total carbon and 4 ppb to 5000 ppm of inorganic carbon. This instrument meets the needs of ultrapure industries, research facilities, and high salt requirements of marine users. SSM-5000A Solid Sample Module details follow.

Sample Preparation and Options

The laboratory that houses this instrument contains the necessary support items for sample preparation, including auto pipettes, a balance, nanopure water, and numerous calibration standards. All work with this instrument and within the associated laboratory must be performed in compliance with EMSL practices and permits.

Individuals may use this instrument independently for their research following the necessary training.



  1. Molecular Dynamics Simulations of Uranyl and Uranyl Carbonate Adsorption at Alumino-silicate Surfaces.
  2. Characterization of natural titanomagnetites (Fe3-xTixO4) for studying heterogeneous electron transfer to Tc(VII) in the Hanford subsurface.
  3. Electron Flow in Multiheme Bacterial Cytochromes is a Balancing Act Between Heme Electronic Interaction and Redox Potentials.
  4. Measurement of advective soil gas flux: Results of field and laboratory experiments with CO2.
  5. Oxide Melt Solution Calorimetry of Fe2+ -bearing Oxides and Application to the Magnetite - Maghemite (Fe3O4-Fe8/3O4) system.
  1. Iron-bearing minerals in sediments naturally reduce contaminant levels (Lack of iron)
  2. New finding shows a research area to expand in EMSL Radiochemistry Annex (Promising Science for Plutonium Cleanup )
  3. Shewanella proteins could be used to generate energy or immobilize contaminants (Wired Microbe Conducts Electricity)
Wietsma, Tom | , 509-371-6375