Located in Concordia’s department of chemistry, these instruments are routinely used by students at all levels for both instructional and research activities. Instruments currently available are shown below.
The Concordia Analytical Instrumentation Laboratory was created with generous funding from the National Science Foundation, the Veden Foundation, the Pittsburgh Conference, and Concordia College.
Varian 715-ES Inductively-Coupled Plasma Atomic Emission Spectrometer (ICP-AES)
ICP-AES is used for the determination of individual elements in a sample. More than 75 elements can be determined, and several elements can be determined simultaneously. The sample is pumped into an argon ion plasma that reaches temperatures as high as 10,000 K! Every element emits its own unique set of wavelengths (colors), so by detecting these colors we can both identify the element and determine its concentration in the original sample.
Varian Prostar High-Performance Liquid Chromatograph (HPLC)
High Performance Liquid Chromatography (HPLC) is used to separate and quantify the various components of a liquid sample. The sample is injected into a flowing stream of liquid (mobile phase) and the components of the sample separate from each other as they flow through a column containing an immobilized stationary phase. As each component emerges from the column it flows past a detector which measures the amount of each.
Varian AA240 Atomic Absorption Spectrometer (AAS)
Atomic Absorbance(AA) Spectroscopy is used to measure the concentration of a single element in a sample, and can be applied to the determination of approximately 70 different elements. The sample is aspirated (sucked) into a flame where it is “atomized” (converted into atoms). A light beam from a hollow cathode lamp is directed through the flame where it is absorbed by the atoms of the element being determined. The more light that is absorbed, the higher the concentration of that element in the sample.
Agilent 6890 Gas Chromatograph-Mass Spectrometer (GC-MS)
Gas Chromatography-Mass Spectrometry (GC-MS) is used to separate, identify, and quantify the components of a sample mixture. The sample is injected into an oven where it is vaporized and the components of the sample mixture separate from each other as they move through the column. The separated compounds exit the column and enter the MS where they are bombarded by an electron beam that breaks the molecules up into smaller fragments. The MS then measures the molecular weight of these fragments. The resulting fragmentation pattern aids in identifying the molecule.
Metrohm Advanced IC Ion Chromatograph (IC)
Ion Chromatography (IC) is used to separate and quantify ions dissolved in an aqueous sample. The sample is injected into a flowing stream of liquid and the various types of ions in the sample separate into individual bands as they flow through a column containing charged sites that temporarily bind the ions (the stationary phase). As each separate band of ions emerges from the column it flows toward a detector that measures the conductivity of the liquid.