Difference between revisions of "Category:Dye Analysis"

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(Dye Analysis by Chromatography)
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== Dye Analysis by Chromatography ==
 
== Dye Analysis by Chromatography ==
  
The purpose of the '''Dye Analysis''' database is to collect data from LC/DAD/MS analyses of actual samples from artifacts and standard dye materials. Each record represents one sample. The record includes information on the sample source, interpretation of the results, the sample preparation procedure, and details of the analytical technique. Images of the chromatograms are included, both DAD signals (at one or more different wavelengths of absorption) and MS (possibly including total ion chromatograms, base peak chromatograms, or extracted ion chromatograms). A table of specific compounds identified in the sample includes common name of the compound, retention time during the analysis, molecular weight (or major ion, if a fragment), and major UV/visible absorbance wavelengths. Finally, images of spectra are included. These include UV/visible absorption spectra of individual compounds and mass spectra. In general, mass spectra that only show the molecular ion will not be included. Spectra that contain collision-induced fragments in addition to the molecular ion, or MS/MS spectra, if acquired, will be included when possible. Many analyses often include small, unidentified peaks. These generally will not be discussed in the analysis record, but users should consult the original data source for full discussion.  
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The '''Dye Analysis''' database includes analyses of reference dye materials and analyses of samples from cultural artifacts that have been carried out by liquid chromatography, generally coupled with diode array and mass spectrometer detectors (LC/DAD/MS). The database covers natural as well as synthetic dyes. Individual records generally include images of chromatograms from both detectors (absorbance at one or more wavelengths; total ion, base peak or extracted ion chromatograms). Images of UV/visible spectra from individual compounds are included.  Mass spectra that only show the molecular ion are generally not included.  Mass spectra containing useful information on fragmentation of the molecular ion are included, as are mass spectra from multistage mass spectrometry (MS/MS) if such a technique was utilized. 
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Each record features a table of specific compounds identified in a sample, which includes the common name of the compound, molecular weight (or major ion, if this is a fragment), and major UV/visible absorbance wavelengths. Many analyses include small, unidentified peaks, which usually will not be discussed in a record unless they are particularly pertinent to characterization. Original data sources (published or unpublished) are indicated, from which more detailed information on interpretation than can be included in the record may be available.  Details of sample preparation, instrumentation and analytical conditions for each chromatogram are included.
  
 
== Dye Analysis database subcategories ==
 
== Dye Analysis database subcategories ==

Revision as of 13:44, 27 July 2017

Dye Analysis by Chromatography

The Dye Analysis database includes analyses of reference dye materials and analyses of samples from cultural artifacts that have been carried out by liquid chromatography, generally coupled with diode array and mass spectrometer detectors (LC/DAD/MS). The database covers natural as well as synthetic dyes. Individual records generally include images of chromatograms from both detectors (absorbance at one or more wavelengths; total ion, base peak or extracted ion chromatograms). Images of UV/visible spectra from individual compounds are included. Mass spectra that only show the molecular ion are generally not included. Mass spectra containing useful information on fragmentation of the molecular ion are included, as are mass spectra from multistage mass spectrometry (MS/MS) if such a technique was utilized.

Each record features a table of specific compounds identified in a sample, which includes the common name of the compound, molecular weight (or major ion, if this is a fragment), and major UV/visible absorbance wavelengths. Many analyses include small, unidentified peaks, which usually will not be discussed in a record unless they are particularly pertinent to characterization. Original data sources (published or unpublished) are indicated, from which more detailed information on interpretation than can be included in the record may be available. Details of sample preparation, instrumentation and analytical conditions for each chromatogram are included.

Dye Analysis database subcategories

Reference Materials Cultural Artifacts


How to use the Dye Analysis database

The full list of dye records are listed below. Shorter lists can be found by clicking on the links above for the subsections within Dye Analysis. Additionally, individual compounds may be searched for using the box in the upper right and the list of results will indicate all samples in which the compound was found.

Credits

(add paragraph for grant and sources of reference materials and data entry)

Subcategories

This category has the following 7 subcategories, out of 7 total.

Pages in category "Dye Analysis"

The following 97 pages are in this category, out of 97 total.

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