Exposure and Health-risk Assessments for Petroleum Coke Workers Exposed to Polycyclic Aromatic Hydrocarbons (PAHs)

• Main Authors: Yen-Ting Fann, 范燕婷
• Other Authors: Perng-Jy Tsai
• Format: Others
• Language: zh-TW
• Published: 2006
• Online Access: http://ndltd.ncl.edu.tw/handle/61016829123154820694

碩士 === 國立成功大學 === 環境醫學研究所 === 94 === The aim of the study was to investigate the characteristics and health risk of petroleum coke workers caused by polycyclic aromatic hydrocarbons（PAHs）exposure. The association between personal exposures and biological monitoring was also studied. Personal respiratory and dermal samples were collected on all selected workers. The works were divided into four similar exposure groups（SEGs）accordind to their working places and contents. The four groups included pre-process operators（n=3）, coke tank operators（n=5）, dehydration tank operators（n=4）and coke field operators（n=2）. Results of personal exposure were further used to assess health-risk of lung cancer and skin cancer. The results of personal exposure measurement show that total-PAHs exposure levels for the four SEGs were 31,931（pre-process）, 31,006（coke tank）, 34,283（dehydration tank）and 29,346 ng/m3（coke field）, respectively. The data presented that the personal inhalatory and dermal exposure were mainly contributed by the low molecular weight and hight molecular weight PAHs, respectively. The estimated lung cancer and skin cancer risks for all investigated SEGs fell to the range 0.70×10-2~1.39×10-2, and 0.63×10-4~1.12×10-4, respectively. It indicates that the preventing strategy should be focused on inhalator exposures, rather than the dermal contact. The mean of 1-OHP half-life in petroleum coke workers was 15.10hr ranging from 5.39 to 57.35 hours. By conducting multivariate linear regression analysis, this study found that workers’ smoking habit and working age were not significant, but through the combination of both personal gas- and partical-phase respiratory and dermal exposures would be able to explain 59.8% variations on workers’ daily urinary 1-hydroxypyrene（1-OHP）.