An analytical method was developed to quantitatively determine selected monohydroxy metabolites of polycyclic aromatic hydrocarbons(PAHs) in human urine. The procedure included enzymatic hydrolysis to cleave the conju...An analytical method was developed to quantitatively determine selected monohydroxy metabolites of polycyclic aromatic hydrocarbons(PAHs) in human urine. The procedure included enzymatic hydrolysis to cleave the conjugated metabolites, solid-phase microextraction enrichment, and gas chromatography-mass spectrometry analysis. The method proved to be sensitive enough to detect the selected PAH metabolites in human urine.展开更多
Tramadol and its four metabolites O-desmethyltramadol,N-desmethyltramadol,N,O-didesmethyltramadol,Hydroxy tramadol were identified by GC-MS(EI,PCI).The contents and kinds of tramadol and its metabolites were compared ...Tramadol and its four metabolites O-desmethyltramadol,N-desmethyltramadol,N,O-didesmethyltramadol,Hydroxy tramadol were identified by GC-MS(EI,PCI).The contents and kinds of tramadol and its metabolites were compared between human urine and rat urine.The identical metabolites were found in human urine and rat urine but different contents.Some of the tramadol and its metabolites existing as conjugative and the others existing as educts in body were found after enzymatic hydrolysis.展开更多
基金supported by the National Natural Science Foundation of China(21227006,21275088)the China Equipment and Education Resources System(CERS-1-75)
文摘An analytical method was developed to quantitatively determine selected monohydroxy metabolites of polycyclic aromatic hydrocarbons(PAHs) in human urine. The procedure included enzymatic hydrolysis to cleave the conjugated metabolites, solid-phase microextraction enrichment, and gas chromatography-mass spectrometry analysis. The method proved to be sensitive enough to detect the selected PAH metabolites in human urine.
文摘Tramadol and its four metabolites O-desmethyltramadol,N-desmethyltramadol,N,O-didesmethyltramadol,Hydroxy tramadol were identified by GC-MS(EI,PCI).The contents and kinds of tramadol and its metabolites were compared between human urine and rat urine.The identical metabolites were found in human urine and rat urine but different contents.Some of the tramadol and its metabolites existing as conjugative and the others existing as educts in body were found after enzymatic hydrolysis.