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Spectrum Analysis

Spectrum Analysis is the study of electromagnetic interactions of matter in order to determine its chemical and physical properties. The analysis of spectra originated through the study of visible light which was dispersed using a prism. Nowadays, the concept has expanded to include any type of interaction regarding electromagnetic energy.

The actual spectrum for analysis is usually presented as a variable of interest as a function of either wavelength or frequency. However, spectroscopic studies can deviate from this norm, such as in mass spectrometry, where relative abundance is compared to mass-to-charge ratio to determine the elemental composition and the chemical structures of molecules.

Although Spectrum Analysis may seem very broad, it actually can be classified based on the nature of the interaction. These interactions include: absorption, emission, elastic scattering and inelastic scattering just to name a few. Thus, understanding spectra and how to read them is a useful tool to understand the electromagnetic interactions, as well as the physical and chemical properties of matter.

Categories within Spectrum Analysis

Mass Spectrometry

Postings: 11

Mass Spectrometry is the study of the spectra of masses in order to determine not only the elemental composition but also the chemical structures of molecules.

Determination of the Molecular Shape of Dimethyl Sulfoxide

Determination of the Molecular Shape of Dimethyl Sulfoxide using Infrared Spectroscopy Objective/Purpose: Use Infrared (IR) spectrophotometry to support the suggested three dimensional shape of DMSO based on bonding between Copper (II) chloride (CuCl2) and Dimethylsulfoxide (DMSO). Calculations: - CuCL2 134.5MM 150mg

IR and UV-Vis Instrumentation

I have a few questions regarding Ir and UV-Vis, 1. How do you determine if a molecule will be IR-Active? 2. Why is CO2 IR active and N2 not? Is O2 IR-Active? 3. Would the IR spectrum of polymer polystyrene have sharp or broad signals? Explain. 4. Why are some compounds colored and others white? Thanks in advance

Spectroscopy and Conversion of Alcohol

Provide a brief explanation as how you could use the various forms of spectroscopy to give you an indication that you have 100% conversion of alcohol to alkene? Use specific signals to support your answer.

NMR and IR Spectrosocopy

1) Give the Frequency ranges (in cm-1) for each of the following: a. O-H stretch b. aldehyde c. -C-H stretch d. =C-H stretch 2) Briefly describe how could you distinguish between cyclohexane and cyclohexene by IR? 3) Define the following terms: a. Coupling constant b. Chemical shift c. Spin-spin coupling. 4) A solid

Spectroscopy - The molecular formula for the compound

I URGENTLY need help with these problems. I must be able to identify for each graph or problem the molecular formula for the compound and the structure for each compound. I must label the major peaks on the IR spectrum and also label the peaks contained in the HNMR spectrum. I must Identify all peaks on the CNMR spectrum. Lastl

Explain x-ray fluoresence vs. mass spectroscopy for analysis of boron

First, is it correct to say that XRF measurement applies only to metals and transitional metals in the periodic chart? In otherwords, XRF can only be used to measure ppm levels of metals in solution etc. etc. For instance, zinc and aluminum could be measured with XRF. What about a non-metal like boron ---- why can't XRF truly

H NMR

NOTE: Could you please use carbohydrates as the examples of the cyclic organic molecules? Describe how H NMR can be used to obtain information about the conformation of two cyclic ORGANIC molecules. Length 750 words + illustrations + references.

Organic Compound Analyzed using UV specro and IR Spectro

A organic compound is analyzed using UV-Spectroscopy and IR spectrometry. (A) Assuming that this compound exhibits a maximum absorbance at a wavelength in the UV region, sketch an expected UV spectrum and label the axes. (B) Sketch an expected IR spectrum. Label the axes. (C) What are the major differences and similarities be