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Chromatography

A chromatograph is an instrument used for separating chemicals in a complex mixture. This is often done using a flow-through tube known as a column, through which different chemical constituents of a sample pass at different rates according to their various physical and chemical properties.

ASET contains the following chromatographs:

Gas Chromatography – for volatile and semi-volatile small molecules.

Agilent 5890 (Thermal conductivity detector)

Agilent 6850 series 2 (FID detector)

Agilent 6890 headspace (interfaced to single quadrupole mass spectrometer)

Agilent 6890 (interfaced to single quadrupole mass spectrometer)

Agilent 7890A GC (FID and ECD detectors)

Varian CP 3800 GC (interfaced to ion trap mass spectrometer)

Liquid Chromatography – For nonvolatiles, highly polar compounds, and proteins.

Agilent 1200 Series with VWD (interfaced to 6330 ion trap mass spectrometer)

Agilent 1200 Series with DAD (interfaced to 6410B triple quadrupole tandem mass spectrometer)

Ion Chromatography – for cation and anion analysis

Dionex Ion Chromatograph ICS 4000

Capillary Electrophoresis – for charged ionic species

            Agilent 7100 with DAD and Zetalif laser detector

Elemental Analyzers 

for quantitative determination of specific elements.

Total Carbon and Nitrogen

Shimadzu TOC-VCHN for total organic and inorganic carbon (TOC, DOC, DIC) and total nitrogen (TN)

TOC

Mercury Detector

            Perkin Elmer AS-90 Flow Injection Mercury System