This laboratory, housed in 123 Town, provides chemical analysis and related training and consultation services in support of research sponsored by the Iowa State University Office of Biotechnology. Documented quality control receives top priority and is made available to researchers wishing to verify the quality of results.
Facility staff can function as consultants to assist the Iowa State University research community by preparing quality assurance plans for research proposals, configuring computer systems for data acquisition and manipulation, training departmental personnel in analytical instrumentation and methodology, implementing chemical hygiene plans and preparing specifications for instrument purchases. Most of the laboratory’s major instrument systems are available for use by researchers who wish to do their own analytical work. The laboratory provides training and supervision for those researchers.
Atomic Absorption Spectrophotometry
Flame atomic absorption and emission are available. A 150-position autosampler and a GBC 932 Plus Atomic Absorption Spectrophotometer can be used to determine metals in large numbers of samples.
A Seal Analytical AQ2+ automated discrete analyzer is available for unattended automated analysis of nitrogen, phosphorus, silica, sulfate, chloride and cyanide.
A BD-40 block digester is available for simultaneous, semi-automated Kjeldahl nitrogen and total phosphorus digestions. Data collection, computation and reporting are carried out with a microcomputer data station.
A Leeman Labs Hydra AF Gold Plus automated mercury analyzer is available to analyze for trace levels of mercury. The analyzer uses cold vapor atomic fluorescence with dual stage gold amalgamation and dual detectors.
Gas Chromatography/Mass Spectrometry (GC/MS)
A Varian Saturn 2100 ion trap GC/MS system that includes MS/MS, SIS, and CI capabilities is available. The system includes an autosampler and GC/MS data station.
Four gas chromatographs served by EZ Chrom Elite Chromatography Data Systems provide a wide range of options for organic analysis. FID, ECD, TCD, ELCD, PID and NPD detectors are available. Autosamplers are available for liquid injection as well as purge-and-trap sampling. Chromatographs are equipped for operation with packed, capillary or Megabore columns. Sample preparation techniques include continuous or discrete liquid-liquid extraction for water samples and sonication or Soxhlet extraction for soil, tissue and other solid samples.
A Shimadzu TOC-Vws TOC Analyzer is available to analyze carbon in liquid samples by the UV-promoted persulfate oxidation method.
The laboratory is equipped for most types of wet chemical analysis, including related spectrophotometric and potentiometric methods. Membrane filter techniques are used for bacterial testing.