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Chemistry - Instrumentation
Fluorescence Spectrophotometer (Fluorimeter)
A fluorimeter measures the intensity and wavelength of emission spectrum after a sample has been photoexcited. The data are used to identify the presence and amount of specific molecules present in sample. In addition to fluorescence (fast emission), both phosphorescence (slow emission) and luminescence (light emission caused by a process other than heating) can be measured with this instrument. The high energy throughput and excellent signal to noise ratio of this instrument allows measurements of chemiluminescent and bioluminescent compounds.
Atomic Absorption Spectrophotometer (AA)
Buck Scientific 210 VGP
Atomic Absorption is primarily used to determine the concentrations of elements at very low levels in solution and it is particularly useful for metallic elements, such as copper and lead. A very hot flame is used to break molecules into individual atoms and then a single type of atom is detected using a special lamp system. All operating conditions are pre-loaded in the internal computer, including lamp settings, secondary wavelengths, and alternate methods of analysis for over 60 elements by flame, furnace, or hydride techniques. The three lamp turret has individual controls for alignment and standby mode to keep lamps warm.
High-Performance Liquid Chromatography System (HPLC)
Waters 486 Tunable Absorbance Detector with 717 Plus Auto Sampler
High-performance liquid chromatography is used in analytical chemistry to separate components, identify each component and quantify each component of a sample. This instrument is a single-channel tunable ultraviolet/visible detector designed for high performance liquid chromatography applications and it can operate as a stand-alone unit or with other Waters system modules. The Waters 486 provides a usable light intensity over the wavelength range of 190-600 nm.
Fourier Transform Infrared Spectrometer (FT-IR)
Thermo Electron Corporation Nicolet 380
FTIR produces an infrared spectrum of absorption, emission, photoconductivity or Raman scattering of a solid, liquid or gas via a mathematical process called Fourier transformation.
Ultraviolet-Visible Spectrophotometer (UV/Vis)
UV/Vis spectroscopy is used for the quantitative and qualitative analysis of various analytes ranging from transition metal ions, conjugated organic compounds and biological macromolecules. Analysis is commonly conducted in solutions, but solids and gases can also be studied. This method is used in many scientific fields such as organic chemistry, biochemistry, pharmaceutical analysis, food testing, pharmaceuticals, environmental protection and the life sciences.
Gas Chromatograph (GC)
Hewlett Packard 5890 Series II
Gas chromatography is a common type of chromatography used in analytical chemistry for separating and analyzing compounds that can be vaporized without decomposition. Typical uses of GC include testing the purity of a particular substance, or separating the different components of a mixture (the relative amounts of such components can also be determined).
Nuclear Magnetic Resonance Spectrometer (NMR)
Nuclear magnetic resonance occurs when nuclei in a magnetic field absorb and re-emit electromagnetic radiation. NMR data are used to study physical, chemical and biological properties of matter. This 60 MHz Proton NMR spectrometer provides a way to introduce students to modern FT-NMR spectrometry. The "NUTS" software permits advanced NMR data processing. The instrument provides excellent low-field proton spectra of organic compounds. Relaxation time measurements and two-dimensional COSY (COrrelated SpectroscopY) experiments can also be performed.
A bomb calorimeter is used to determine the heat of combustion of a variety of samples. Additionally, it can be used to convert solid and liquid combustible samples into soluble forms ready for chemical analysis.
Bausch & Lomb ABBE 3L
This instrument measures the refractive index of a solid, liquid or gas sample. The refractive index is a dimensionless value that is related to the degree light bends as it passes through a substance. The measurement of the refractive index can provide information about the composition of a solution or mixture.