Quantitative determination of the 1,3-butadiene urinary metabolite 1,2-dihydroxybutyl mercapturic acid by high-performance liquid chromatography/tandem mass spectrometry using polynomial calibration curves.
1,3-Butadiene is used in the production of synthetic rubber and is also a widespread environmental pollutant, produced by car exhaust, heating and cigarette smoke. According to IARC it is probably carcinogenic to humans. A method was developed and validated for the quantification in human urine of 1,2-dihydroxybutyl mercapturic acid, a butadiene metabolite for which the American Conference of Governmental Hygienists suggests a biological exposure index of 2500 microg/L. Solid phase extraction was used for analyte extraction and HPLC-MS/MS for detection. The calibration range from 20 to 2500 microg/L required the use of polynomial calibration curves, and the performance of the analytical method was tested according to an international validation guideline. Accuracy was never less than 85%, precision always higher than 15% and the LOD 3.6 microg/L. The method was applied to 33 non-smokers, non-occupationally exposed to butadiene, and gave urinary concentrations between 16 and 599 microg/L.
Carrieri
Mariella
M
Department of Environmental Medicine and Public Health, University of Padua, via Giustiniani 2, 35128 Padua, Italy.
Bartolucci
Giovanni Battista
GB
Livieri
Monica
M
Paci
Enrico
E
Pigini
Daniela
D
Sisto
Renata
R
Corsetti
Federica
F
Tranfo
Giovanna
G
D000111:Acetylcysteine / Q000031:analogs & derivatives* / Q000652:urine; D002070:Butadienes / Q000652:urine*; D002138:Calibration; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D006801:Humans; D011786:Quality Control; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D053719:Tandem Mass Spectrometry / Q000379:methods*; D035501:Uncertainty
C540428:1,2-dihydroxybutyl mercapturic acid; D002070:Butadienes; C031763:1,3-butadiene; D000111:Acetylcysteine