Cargando…

Occupational Exposure to N,N-Dimethylformamide in the Summer and Winter

We evaluated total body burden of N,N-dimethylformamide (DMF) taken through the lung and skin by personal exposure of workers to DMF and urinalysis of N-methylformamide (NMF) and N-acetyl-S(N-methylcarbamoyl)-cysteine (AMCC). A total of 270 workers were engaged in four different jobs in a workplace...

Descripción completa

Detalles Bibliográficos
Autores principales: MIYAUCHI, Hiroyuki, TSUDA, Yoko, MINOZOE, Aoi, TANAKA, Shigeru, ARITO, Heihachiro, TSUKAHARA, Teruomi, NOMIYAMA, Tetsuo
Formato: Online Artículo Texto
Lenguaje:English
Publicado: National Institute of Occupational Safety and Health, Japan 2014
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4273019/
https://www.ncbi.nlm.nih.gov/pubmed/25224331
http://dx.doi.org/10.2486/indhealth.2014-0070
Descripción
Sumario:We evaluated total body burden of N,N-dimethylformamide (DMF) taken through the lung and skin by personal exposure of workers to DMF and urinalysis of N-methylformamide (NMF) and N-acetyl-S(N-methylcarbamoyl)-cysteine (AMCC). A total of 270 workers were engaged in four different jobs in a workplace distant from main production lines emanating high levels of DMF. They were not required to wear any personal protective equipment including respirators or gloves. We found that log-transformed urinary levels of NMF and AMCC increased with an increase in log-transformed concentrations of exposure to DMF. Urinary levels of NMF and AMCC were significantly higher in the summer than the winter, although there was no significant seasonal difference in the concentrations of exposure to DMF. Our findings suggested that the increased urinary levels of NMF and AMCC in the summer resulted in increased skin absorption of DMF due to an increased amount of DMF absorbed by the moisturized skin under humid and hot conditions. Seasonal changes in the relative internal exposure index confirmed the present finding of enhanced summertime skin absorption of DMF. AMCC is thought to be a useful biomarker for assessments of cumulative exposure to DMF over a workweek and for evaluations of workers’ health effects.