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Determination of pyrimidine cyclobutane dimers by electrospray ionization/ion trap mass spectrometry

✍ Scribed by R. S. Ramsey; G. J. van Berkel; S. A. McLuckey; G. L. Glish

Publisher: John Wiley and Sons
Year: 1992
Tongue: English
Weight: 587 KB
Volume: 21
Category: Article
ISSN: 1076-5174
DOI: 10.1002/bms.1200210705

No coin nor oath required. For personal study only.

✦ Synopsis

A straightforward approach for determining the cyclobutane pyrimidine dimers, thyminethymine, uracil-thymine, and uracikacil, based upon electrospray ionization/ion trap mass spectrometry is described. These compounds are detected as the sodiated molecules, [ M + Na] +, the response for which is maximized by adding low concentrations of sodium salts to the electrospray solutions. Under these conditions suhnanogram levels of the dimers are determined by flow injection analysis. Structural information is obtained by collision-induced dissociation of the lithium adducts, [ M + Lil+, which are formed by adding Lithium salts to the solvents.

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