Using gridded multimedia model to simulate spatial fate of Benzo[alpha] pyrene on regional scale

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 城市与区域生态国家重点实验室

	Using gridded multimedia model to simulate spatial fate of Benzo[alpha] pyrene on regional scale
	Liu, Shijie ; Lu, Yonglong ; Wang, Tieyu ; Xie, Shuangwei ; Jones, Kevin C. ; Sweetman, Andrew J.
刊名	ENVIRONMENT INTERNATIONAL
	2014
卷号	63 期号:1 页码:53-63
关键词	Spatially multimedia fate Gridded model BaP Bohai coastal region
ISSN号	0160-4120
中文摘要	Predicting the environmental multimedia fate is an essential step in the process of assessing the human exposure and health impacts of chemicals released into the environment. Multimedia fate models have been widely applied to calculate the fate and distribution of chemicals in the environment, which can serve as input to a human exposure model. In this study, a grid based multimedia fugacity model at regional scale was developed together with a case study modeling the fate and transfer of Benzo[alpha]pyrene (BaP) in Bohai coastal region, China. Based on the estimated emission and in-site survey in 2008, the BaP concentrations in air, vegetation, soil, fresh water, fresh water sediment and coastal water as well as the transfer fluxes were derived under the steady-state assumption. The model results were validated through comparison between the measured and modeled concentrations of BaP. The model results indicated that the predicted concentrations of BaP in air, fresh water, soil and sediment generally agreed with field observations. Model predictions suggest that soil was the dominant sink of BaP in terrestrial systems. Flow from air to soil, vegetation and costal water were three major pathways of BaP inter-media transport processes. Most of the BaP entering the sea was transferred by airflow, which was also the crucial driving force in the spatial distribution processes of BaP. The Yellow River, Liaohe River and Daliao River played an important role in the spatial transformation processes of BaP. Compared with advection outflow, degradation was more important in removal processes of BaP. Sensitivities of the model estimates to input parameters were tested. The result showed that emission rates, compartment dimensions, transport velocity and degradation rates of BaP were the most influential parameters for the model output. Monte Carlo simulation was carried out to determine parameter uncertainty, from which the coefficients of variation for the estimated BaP concentrations in air and soil were computed, which were 0.46 and 1.53, respectively. The model output-concentrations of BaP in multimedia environment can be used in human exposure and risk assessment in the Bohai coastal region. The results also provide significant indicators on the likely dominant fate, influence range of emission and transport processes determining behavior of BaP in the Bohai coastal region, which is instrumental in human exposure and risk assessment in the region. (C) 2013 Elsevier Ltd. All rights reserved.
WOS记录号	WOS:000330909900007
公开日期	2015-03-23
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/9248]
专题	生态环境研究中心_城市与区域生态国家重点实验室
推荐引用方式 GB/T 7714	Liu, Shijie,Lu, Yonglong,Wang, Tieyu,et al. Using gridded multimedia model to simulate spatial fate of Benzo[alpha] pyrene on regional scale[J]. ENVIRONMENT INTERNATIONAL,2014,63(1):53-63.
APA	Liu, Shijie,Lu, Yonglong,Wang, Tieyu,Xie, Shuangwei,Jones, Kevin C.,&Sweetman, Andrew J..(2014).Using gridded multimedia model to simulate spatial fate of Benzo[alpha] pyrene on regional scale.ENVIRONMENT INTERNATIONAL,63(1),53-63.
MLA	Liu, Shijie,et al."Using gridded multimedia model to simulate spatial fate of Benzo[alpha] pyrene on regional scale".ENVIRONMENT INTERNATIONAL 63.1(2014):53-63.