Shared Equipment
Shared Equipment belong in labs with specific PI's with use coordinated by Dave Murray.
Dionex Accelerated Solvent Extractor
Dionex Accelerated Solvent Extractor (ASE) is used to extract organic compounds from soils, sediments, and organic material. The ASE moves the extraction solvent through a heated extraction cell that contains the sample. The extraction is performed by direct contact of the sample with the hot solvent. When the extraction is complete, the solvent is moved from the cell to a collection vial using compressed nitrogen. Our system is capable of handling 24 samples at a time. Click for more information.
Innov-X Systems Handheld XRF
The Innov-X Systems Alpha 4000 Handheld XRF identifies and measures the chemical composition of a given sample. The instrument is applied to the surface of the sample, where upon trigger, a beam of X-rays excites electrons in the atoms of the sample. The spectrum obtained from these excited electrons reveals both the elemental content of the sample, as well as the concentration of each element identified within the sample. The advantage of the handheld XRF is that it is portable and quicker, which allows for greater flexibility in analyzing samples. Click for more information.
DMA-80 Direct Mercury Analyzer
The Milestone mercury analyzer determines mercury content of solid and liquid samples. Samples are placed in quartz or nickel boats and inserted into the analyzer's 40-position autosampler. Each sample is then dried and combusted, and the products of combustion are further decomposed using a hot catalyst. A gold amalgamator is used to trap mercury vapors, after which the system is flushed with oxygen to remove any excess gases. The amalgamator is then rapidly heated to release the mercury vapors, which pass through the light path of the built-in Atomic Absorption Spectrophotometer at a 254 nm wavelength. The control terminal allows manual or automatic operation of the instrument, and it can import results of analysis into a spreadsheet. The detection range is 0 to 1,000 ng of mercury. Click for more information.
PS Analytical Sir Galahad II Mercury Vapor Analyzer
The PS Analytical Sir Galahad II determines mercury levels in gaseous samples, with the ability to detect down to 0.1 pg of Hg. Samples are analyzed using a trap and purge method with the Amasil (gold impregnated silica traps) adsorptaion/desorption system and the Merlin atomic fluorescence spectrometry (AFS) detector. The Sir Galahad II requires minimal training to operate and can analyze up to 40 samples per hour. Click for more information.
Lachat QuikChem 8500 Flow Injection Analyzer
The Lachat QuikChem 8500 Flow Injection Analyzer (FIA) is used to measure nutrient concentrations in water samples and soil extracts. Samples are injected into a continuous flow of reagents and mixing occurs in narrow bore tubing under laminar flow conditions. The color developed during the reaction of the samples and reagents are measured on dual beam photometer with a tungsten halogen lamp as a light source. Our system is a dual channel setup with manifolds to measure nitrate/nitrite, ammonia, phosphate, and silicate in fresh and brackish waters as well as extractions from soil samples. The system includes an ASX-500 autosampler and a PDS200 autodilutor to handle a large number of samples with varying concentrations. Omnion 3.0 software is used to control the analyzer, and to collect and quantify the data. Click for more information.
Agilent Tech 1200 LC/MS system
The Agilent 1200 LC/MS System is a liquid chromatography unit used to separate and then quantify the chemical components in a given sample. Autosamplers inject the sample along with a common carrier solution into a number of columns. As the sample passes through, its compositional components are separated by differential adsorption. Diode-array detectors measure the passing time of the separated component through the column. The detectors also compile a spectrum set within a 190 to 950nm range, from which the concentration of the component may be determined. Click for more information.
Agilent Tech HP6890 GC/FID
The Agilent Tech HP6890 GC/FID is a gas chromatography unit that detects and measures the trace levels of semivolatile organic compounds in given samples. A collected sample is vaporized and dissolved, and then injected along with a chemically inert carrier gas into a purge-packed column. A detector compiles a spectrum of the separated components, providing an identification of the compound and a measurement of its concentration in the sample. Click for more information.
Agilent Tech HP6890N GC with MS/ECD Detectors
The Agilent Tech HP 6890N GC with MS/EC Detectors measures the concentration of halogenated organic compounds and aromatic pollutants in extracted samples. These compounds are separated by gas chromatography and the detector compiles a chemical spectrum, which can be analyzed to identify and quantify the compounds. The micro-electron capture detector, μECD has a cell plated with 63Ni , measures trace levels (1-500 pg/μl) of halogenated and aromatic pollutants. It has a detectability of 50 femtograms and wide-ranged sampling rate from 5 to 50 Hz. The mass spectrometer measures the molecular weight of a compound to provide data to both quantify and identify compounds. Click for more information.
Varian 3800 Gas Chromatography System
Varian 3800 Gas Chromatography System with a 2200 Mass Detector (GC/MS) is used to measure semi-volatile organic compounds (sVOC's) in soil extracts. This system is equipped with a Varian Capillary Column with CP-Sil8 coating for the analysis of PAH's in soils using a variation of EPA Method 8270. Click for more information.
Shimadzu 2010 GC with OI Analytical P&T System
OI Analytical Model 4660 Eclipse Purge-and-Trap Sample Concentrator is used for sample introduction on a Shimadzu 2010 Gas Chromatography/Flame Ionization Detector (GC/FID) system for volatile organic compound (VOC) analysis. Our system includes the Model 4551A 51-position vial autosampler that handles water samples and liquid extracts from soils. Click for more information.
UIC, INC Inorganic Carbon Analyzer
The UIC, Inc. CM240 TIC Analyzer is capable of measuring total inorganic carbon in a wide variety of sample matrices. It combines the CM5240 automated sample acidification sample introduction system with the CM5014 Coulometer. Solid samples ranging from low ppm to 100% inorganic carbon can be analyzed with this system. Click for more information.