NDLI: Biological monitoring of styrene exposure and possible interference of acetone co-exposure

Content Provider	Springer Nature Link
Author	Marhuenda, Dolores Prieto, M. José Periago, J. Francisco Marti, Juan Perbellini, Luigi Cardona, A.
Copyright Year	1997
Abstract	The object of this study is the evaluation of some of the toxicokinetic effects of exposure to low concentrations of styrene, and the possible influence of simultaneous exposure to acetone. To this end we studied 19 workmen simultaneously exposed to both solvents. During a week of 4-h work shifts, the workmen underwent daily personal environmental monitoring and the collection of urine samples, at both the beginning and the end of the work period, for the determination of mandelic acid (MA) and phenylglyoxylic acid (PGA). The presence of the solvents in the atmosphere was evaluated using passive personal monitoring and gas chromatography. Average exposure to styrene and acetone were respectively 72.2 mg/m3 and 225.7 mg/m3. MA and PGA were quantified by high-performance liquid chromatography (HPLC). The daily urinary concentration averages, both at commencement and at the end of work shifts, of both the metabolites studied and of the sum of the two, were in statistically significant linear correlation with the average daily styrene exposure. Concentrations of MA and PGA in urine samples collected at the start of the work shift averaged 61.5 mg/g creatinine and 45.2 mg/g creatinine respectively, representing 41% and 72% of those at the end of the work shift which were 148.3 and 62.6 mg/g creatinine, respectively. With equal exposure to styrene, the average urinary concentrations of MA and PGA at both the beginning and end of the work shift increased significantly (P<0.001) during the working week. Moreover, we found that with equal exposure to styrene, urinary excretion of MA, PGA and MA+PGA at the end of the shift was inversely correlated with the intensity of acetone exposure (r=0.4659, 0.3410 and 0.4542 respectively, P<0.001). In conclusion, these results express slower urinary kinetics of styrene metabolites than is usually described in the literature, and favor a tendency to accumulate MA and PGA in the organism as a consequence of the retardation of urinary excretion kinetics. Acetone apparently represents one of the determining factors in this interference.
Starting Page	455
Ending Page	460
Page Count	6
File Format	PDF
ISSN	03400131
Journal	International Archives of Occupational and Environmental Health
Volume Number	69
Issue Number	6
e-ISSN	14321246
Language	English
Publisher	Springer-Verlag
Publisher Date	1997-06-03
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Content Type	Text
Resource Type	Article
Subject	Public Health, Environmental and Occupational Health

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