TY - JOUR
T1 - Liquid chromatography-mass spectrometry with collision-induced dissociation of conjugated metabolites of benzo[a]pyrene
AU - Yang, Y.
AU - Griffiths, W. J.
AU - Sjövall, J.
AU - Gustafsson, J. A.
AU - Rafter, J.
N1 - Funding Information:
Thisw ork wass upportedb y the SwedishC ancerS ociety, Swedish Medical Research Council (grants 03X-6805, 13X-219, 16X-6852, and 03Y-108263, Cancerfiireningen (Stockholm), and the Karolin-ska Institute. The authors wish to thank R. Reimendal and N. Hammar of the Department of Medical Biochemistry and Biophysics, Karolinska Institute, T. Midtvedt of the Department of Medical Microbial Ecology, Karolinska Institute, 8. Egestad of Neurosearch A/S Denmark, and M. Porter, R. Vickers, K. Howes, A. Woolfitt, A. Brown, I’. Bamforth, J. Watkins, and A. Casen of Micromass for expert technical assistance. We are also grateful to C. L. Griffiths for production of tables.
Copyright:
Copyright 2004 Elsevier Science B.V., Amsterdam. All rights reserved.
PY - 1997/1
Y1 - 1997/1
N2 - Benzo[a]pyrene (BP) metabolites conjugated with glutathione, cysteine- glycine, cysteine, N-acetylcysteine, and sulfuric and glucuronic acids have been studied by microcolumn liquid chromatography-electrospray mass spectrometry with collision-induced dissociation (CID) on a hybrid double focusing magnetic sector-orthogonal time-of-flight tandem mass spectrometer equipped with a focal plane array detector. Negative-ion electrospray mass spectra of the conjugated BP metabolites showed strong [M - H]- ions. When the array detector was used, spectra were obtained from femtomoles of sample infused at mass resolutions of 5000 (full width at half maximum). Cone voltage fragmentation spectra show [M - H]- ions and fragment ions indicative of the BP moiety and/or the conjugating group. Linked scan CID spectra at constant B/E were found to contain structurally informative product ions from infusion of as little as 1 pmol of sample. CID spectra were also recorded by using the double focusing sectors for precursor ion selection and the orthogonal time-of-flight analyzer for product ion mass separation. The method was applied to the analysis of conjugated BP metabolites in the urine of germ-free rats given a single intraperitoneal dose of BP.
AB - Benzo[a]pyrene (BP) metabolites conjugated with glutathione, cysteine- glycine, cysteine, N-acetylcysteine, and sulfuric and glucuronic acids have been studied by microcolumn liquid chromatography-electrospray mass spectrometry with collision-induced dissociation (CID) on a hybrid double focusing magnetic sector-orthogonal time-of-flight tandem mass spectrometer equipped with a focal plane array detector. Negative-ion electrospray mass spectra of the conjugated BP metabolites showed strong [M - H]- ions. When the array detector was used, spectra were obtained from femtomoles of sample infused at mass resolutions of 5000 (full width at half maximum). Cone voltage fragmentation spectra show [M - H]- ions and fragment ions indicative of the BP moiety and/or the conjugating group. Linked scan CID spectra at constant B/E were found to contain structurally informative product ions from infusion of as little as 1 pmol of sample. CID spectra were also recorded by using the double focusing sectors for precursor ion selection and the orthogonal time-of-flight analyzer for product ion mass separation. The method was applied to the analysis of conjugated BP metabolites in the urine of germ-free rats given a single intraperitoneal dose of BP.
UR - https://www.scopus.com/pages/publications/0031016601
UR - https://www.scopus.com/inward/citedby.url?scp=0031016601&partnerID=8YFLogxK
U2 - 10.1016/S1044-0305(96)00136-5
DO - 10.1016/S1044-0305(96)00136-5
M3 - Article
AN - SCOPUS:0031016601
SN - 1044-0305
VL - 8
SP - 50
EP - 61
JO - Journal of the American Society for Mass Spectrometry
JF - Journal of the American Society for Mass Spectrometry
IS - 1
ER -