Term Papers on Gc/Ms from Term Papers Lab.
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Purpose:
The Purpose of this experiment is to determine the quantity of caffeine in a sample using an instrument called Gas Chromatography-Mass Spectroscopy (GC-MS). The caffeine samples that are evaluated are coffee, espresso and a deuterated caffeine sample (d3), given by the T.A., of unknown concentration was used as an internal standard.
Theory:
The GC-MS instrument combines two different techniques to form one single method of analyzing mixtures. Gas chromatography performs the separation of components in a mixture, and the mass spectroscopy distinguishes the individual constituent.
A mixture of different specimens can be separated by GC. A sample is injected into the instrument through an injection port. The injection port is maintained at certain mixture, which is called its' mobile phase, to the stationary phase of the instrument. The stationary phase is the GC column, where each compound in the mixture interacts at different rates, and therefore separated. The......
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Title: Gc/Ms
Approximate Word Count: 1303
Approximate Pages: 6 (250 words per double-spaced page)
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Gc/Ms
GC/MS. Purpose ... standard. Theory: The GC-MS instrument combines two different
techniques to form one single method of analyzing mixtures. ... ... -
Drug Identification With Gas Chromatography Mass Spectrometry
... The gas chromatograph/mass spectrometer or GC/MS produces a mass chromatogram of
a substance that acts like a fingerprint for a chemical substance. ... ... -
Evidence Of Early Tobacco In Northeastern North America
... nicotine can have hallucinogenic effects…" (Rafferty, 5). One method of researching
this was through gas chromatography/mass spectroscopy (GC/MS) to find ... ... -
Drug Testing
... However, he adds, the required and most reliable GC/MS urine drug test does
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Aromatherapy
... its purity. Gas chromatography and Mass spectroscopy or GC/MS is the most
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