BTEX exposure assessment and quantitative risk assessment among petroleum product distributors.
Ecotoxicol Environ Saf
; 144: 445-449, 2017 Oct.
Article
en En
| MEDLINE
| ID: mdl-28666218
ABSTRACT
The aim of this study was to evaluate benzene, toluene, ethylbenzene, and xylene (BTEX) exposure among workers at four stations of a major oil distribution company. Personal BTEX exposure samples were collected over working shift (8h) for 50 workers at four stations of a major oil distribution company in Iran. Measured mean values for workers across four sites were benzene (2437, 992, 584, and 2788µg/m3 respectively), toluene (4415, 2830, 1289, and 9407µg/m3), ethylbenzene (781, 522, 187, and 533µg/m3), and xylene (1134, 678, 322, and 525µg/m3). The maximum mean concentration measured across sites for benzene was 2788µg/m3 (Station 4), toluene was 9407µg/m3 (Station 4), ethylbenzene was 781µg/m3 (Station 1) and xylene was 1134µg/m3 (Station 1). The 8h averaged personal exposure benzene concentration exceeded the recommended value of 1600µg/m3 established by the Iranian Committee for Review and Collection of Occupational Exposure Limit and American Conference of Governmental Industrial Hygienists. Mean values for excess lifetime cancer risk for exposure to benzene were then calculated across workers at each site. Estimates of excess risk ranged from 1.74 ± 4.05 (Station 4) to 8.31 ± 25.81 (Station 3). Risk was assessed by calculation of hazard quotients and hazard indexes, which indicated that xylene and particularly benzene were the strongest contributors. Tanker loading was the highest risk occupation at these facilties. Risk management approaches to reducing exposures to BTEX compounds, especially benzene, will be important to the health of workers in Iran.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Petróleo
/
Monitoreo del Ambiente
/
Exposición Profesional
/
Contaminantes Ocupacionales del Aire
Tipo de estudio:
Etiology_studies
/
Risk_factors_studies
Límite:
Humans
País/Región como asunto:
Asia
Idioma:
En
Revista:
Ecotoxicol Environ Saf
Año:
2017
Tipo del documento:
Article
País de afiliación:
Irán