ESS Inorganic Section

Inorganic Chemistry | Trace Metals | Conventional Chemistry | Certification

Selected Conventional Chemistry Instrumentation

Lachat QuikChem 8000 Flow Injection Analyzer
The QuikChem 8000 is a state-of-the-art system that automates wet chemical determinations using the principle of flow injection analysis. The WSLH utilizes these systems for the analysis nitrogen, phosphorus, sulfate and chloride. The systems include the following features: Fully automated Outstanding detection capability for nitrogen, phosphorus and silica. Fully integrated quality control software Facilitates rapid turn-around and large sample throughput.

Radiometer Auto-titration System
	The auto-titrator is a fully automated system used to measure conductivity, pH and alkalinity simultaneously. The system can also be used to determine alkalinity using the Gran Plot method, which is the preferred technique for studying low ionic strength waters.

Perkin-Elmer Flow Injection Mercury System (FIMS)
The FIMS is a compact atomic absorption spectrometer dedicated to the determination of mercury. Based on flow injection analysis technique, the system is fully automated, fast and very precise. It is used for routine analysis of environmental samples for mercury.

Perkin-Elmer 4100ZL and 5100Z Atomic Absorption Spectrometer
	Perkin-Elmer Models 4100ZL and 5100Z are high performance graphite furnace atomic absorption spectrometers. They use Zeeman effect with an alternating magnetic field and heated furnace for accurate background compensation, optimum analytical reliability and minimization of interferences. They instruments provide outstanding detection limits for analysis of routine metals in drinking water and moderately polluted surface waters and wastes.

Thermal Jarrel Ash 61E Inductively Couple Argon Plasma Emission Spectrometer
	Simultaneous plasma emission spectrometer Computer controlled polychromator with 23 detectors Fully automated Very robust with outstanding sample throughput Instrument of choice for mineral and moderately high metals testing.

Dionex Model DX-500 Ion Chromatograph
The Dionex DX-500 is a high performance, ion chromatography system. The system can perform a multitude of ion chromatography applications using conductivity detection. It has outstanding signal-to-noise performance that allows identification of barely detectable peaks. It is the method of choice for anion analysis for researchers studying low ionic strength lakes and precipitation where low detection limits are a desired

Special Studies

• Green Bay Mass Balance Study (1988-1990)
• Lake Michigan Tributary Monitoring Study (1994-1996)
• Indiana Trace Metals Pilot Study (1997-1998)
• Ohio Necessity of Clean Sampling in the Determination of Dissolved Metals Translators (1998-1999)
• Fox River Remediation Studies, Deposit N and 71 (1998-1999)
• Fox River Remediation Study, Deposits 56/57 (1999-2000)
• Milwaukee Airport study (1996-2001)
• Comparison of Metals Digestion Procedures in Wisconsin Waters (1998)

Selected Research Clients

• Wisconsin Department of Natural Resources
• Indiana Department of Environmental Management
• Minnesota Pollution Control Agency
• University of Minnesota
• Metropolitan Pollution Control Commission-Minneapolis, MN
• University of Wisconsin-Madison
  • Water Chemistry Program
  • Limnology Department
  • Department of Agronomy
  • Department of Geology
• U.S. Geological Survey
• Ohio EPA, Division of Surface Water