Department of Community Medicine, Faculty of Medicine and Health Sciences, UAE University, Al Ain, United Arab Emirates.
Int J Environ Health Res. 2010 Oct;20(5):313-27. doi: 10.1080/09603121003663487.
The most significant potentially carcinogenic substances arising from a state-of-the-art clinical waste incinerator (CWI) and vehicle emissions were identified as polychlorinated dibenzo-p-dioxins, polycyclic aromatic hydrocarbons (PAHs), benzene, 1-butadiene, arsenic, cadmium, chromium and nickel. Long-term exposures of the notional maximum exposed individual (MEI) in the local environment, together with aggregate emissions from transport of clinical waste, were estimated. Mass emission rates of PAHs from the CWI to air were compared with previously published estimates of mass emissions to land from CWI bottom ash. Aggregate emissions from road transport of clinical waste were of a similar order to stack emissions from incineration. Mass emissions of PAHs to landfill generally greatly exceeded those from stack emissions. Emissions associated with operation of the CWI present a negligible contribution to overall cancer risk from PAHs and other carcinogens. Uncertainty in the quantitative risk estimates presented here is discussed in the context of these findings.
从最先进的临床废物焚化炉（CWI）和车辆排放中产生的最重要的潜在致癌物质被确定为多氯二苯并对二恶英、多环芳烃（PAHs）、苯、1-丁二烯、砷、镉、铬和镍。估计了名义最大暴露个体（MEI）在当地环境中的长期暴露，以及来自临床废物运输的总排放量。CWI 向空气中排放的多环芳烃的质量排放率与之前 CWI 底灰向陆地排放的质量排放估计值进行了比较。临床废物道路运输的总排放量与焚烧炉烟囱排放的排放量相当。临床废物填埋场的多环芳烃排放量通常大大超过烟囱排放。与 CWI 运行相关的排放对多环芳烃和其他致癌物的总体癌症风险的贡献可以忽略不计。本文提出的定量风险估计的不确定性在这些发现的背景下进行了讨论。
