Based on the environmental multi-media PCDD/Fs concentrations from the Pearl River Delta, potential health risk assessment for different routes of exposure carried out by using VLIER-HUMAAN model. The results showed that total daily intake (TDI) of adult from the Pearl River Delta region exposure to the PCDD/Fs was 3.312 pg·kg-1·d-1. Although it is lower than that recommended the tolerance daily intake value of 4 pg·kg-1·d-1 by the WHO, it has potential human health risk in Pearl River Delta region exposure to PCDD/Fs. For Multi-media exposure routes in the environment, food intake route exposure to PCDD/Fs was the main ways for human, accounted for about 98.0％. Among the food intake items, the fishery product was the main way to the total daily intake, which contributed about 70％. Vegetables, meat and eggs accounted for 16.6％ and 10.5％, respectively, the other food items were lower. Fishery products is an important potential risk source for human exposure to PCDD/Fs. Measurement should be carried out to control and protect the quality safety of fishery products. General adult should be adjusted a reasonable food consumption structure.%基于珠江三角洲不同环境介质(水体、大气和土壤)及食物中PCDD/Fs的研究资料,利用VLIER-HUMAAN模型评估了该区域不同暴露途径下PCDD/Fs对人群潜在健康风险.结果表明:珠江三角洲地区人群平均每日摄入PCDD/Fs的量(TDI)为3.312pgWHO1998-TEQ/kg·d-1,低于世界卫生组织(WHO)组织推荐的容许标准(4pg WHO1998-TEQ/kg·d-1).从暴露途径来看,珠江三角洲地区成年人摄人PCDD/Fs的主要途径食物摄取,约占了98.0%.在食物暴露中,水产品是主要途径,约占总摄人量的70%,蔬菜和肉蛋类分别占了16.6%和10.5%,其它较低.水产品是PCDD/Fs引起人群健康风险的重要风险源,应采取有效措施保障水产品质量,同时,调整饮食结构,降低PCDD/Fs暴露的潜在风险.
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