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Occupational exposure to polycyclic aromatic hydrocarbons: relations between atmospheric mixtures, urinary metabolites and sampling times

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Abstract

Purpose

Occupational exposure to polycyclic aromatic hydrocarbons (PAHs) can be assessed by either air monitoring or biomonitoring using urinary 1-hydroxypyrene (1-OHP) or 3-hydroxybenzo(a)pyrene (3-OHBaP). The aim of this study was to understand the links between atmospheric PAHs and urinary metabolites, in order to improve the biomonitoring strategy for assessing carcinogenic risk.

Methods

Personal air sampling for pyrene and BaP measurements, and urines for 1-OHP and 3-OHBaP analyses of seven workers from electrode production plant were collected every day of the working week.

Results

High variability of atmospheric levels between activities and between days was observed, especially for gaseous pyrene. No correlation was found between urinary metabolites: 1-OHP maximum levels occurred for “electrode extrusion” activity; those of 3-OHBaP occurred for “raw materials dispatcher.” Sixty percentage of 3-OHBaP maximum levels were observed in urines collected at the beginning of shift the last workday. Those of 1-OHP occurred at different sampling times, depending on the gaseous pyrene levels (not stopped by P3 respirators). Dermal absorption of PAHs was confirmed by significant effect of particulate pyrene on 1-OHP in the samples collected the morning of the following day (p < 0.02, n = 25).

Conclusions

Lack of correlation between metabolites concentrations emphasizes the non-relevance of 1-OHP, from a non-carcinogenic gaseous and particulate compound, and the great interest of 3-OHBaP, from carcinogenic BaP. Its slower urinary elimination prevents the risk of exposure underestimation, and urinary analysis should be performed at the beginning of shift the end of working week, especially in case of high exposure variability.

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Acknowledgments

This study was funded by the «Agence nationale de sécurité sanitaire de l’environnement, de l’alimentation et du travail (ANSES)». We thank Pascal Petit and Dr. Alison Foote for editing the manuscript and Sylvette Liaudy, information specialist, for her work.

Conflict of interest

The authors declare that they have no conflict of interest.

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Correspondence to Anne Maitre.

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Barbeau, D., Lutier, S., Bonneterre, V. et al. Occupational exposure to polycyclic aromatic hydrocarbons: relations between atmospheric mixtures, urinary metabolites and sampling times. Int Arch Occup Environ Health 88, 1119–1129 (2015). https://doi.org/10.1007/s00420-015-1042-1

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  • DOI: https://doi.org/10.1007/s00420-015-1042-1

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