气候变化领域集成服务门户(CCPortal): Particle/gas partitioning behavior of polychlorinated biphenyls (PCBs) in global atmosphere: Equilibrium or steady state?

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DOI	10.1016/j.atmosenv.2021.118926
	Particle/gas partitioning behavior of polychlorinated biphenyls (PCBs) in global atmosphere: Equilibrium or steady state?
	Qiao L.-N.; Ma W.-L.; Liu L.-Y.; Zhang Z.-F.; Song W.-W.; Jia H.-L.; Nikolaev A.N.; Macdonald R.W.; Li Y.-F.
发表日期	2022
ISSN	1352-2310
英文摘要	Particle/gas (P/G) partitioning governs the atmospheric transport and fate of semi-volatile compounds (SVOCs). Here, we provide a comprehensive investigation of P/G partitioning of polychlorinated biphenyls (PCBs) by comparing the performance of seven models, (including five equilibrium models: Junge-Pankow model, Harner-Bidleman model, Dachs-Eisenreich model, pp-LFER model, mp-pp-LFER model, one empirical Li-Jia model, and one steady-state Li-Ma-Yang model). For this comparison, 5019 monitoring data points from urban, rural and remote sites for PCBs taken from published papers have been accessed, against which the predictions of these models have been evaluated. Among the 5019 monitoring data points, there are 2791 monitoring data for six selected PCB congeners (CB-28 + 31, −52, −101, −153, −180, −207) and 2228 for dozens of other PCB congeners. We find that in predicting the P/G partition quotient (KP) of the six selected PCB compounds, the Li-Ma-Yang model performs best across the entire logKOA (octanol-air partition coefficient) range (from 7.8 to 15.3), with 86 ± 10% of 2791 monitoring data points lying within a deviation of ±1 log unit of the root mean square error (RMSE) of 0.67 ± 0.18 in urban, rural and remote areas. This model is far superior to the other models in predicting KP, especially in the MP Domain (logKOA ≥ 12.50), with 96% of the data points falling within a deviation of ±1 log unit and a RMSE of 0.48, in comparison to the less than 7% for the five equilibrium models and 20% for the empirical Li-Jia model. These findings suggest that when the particle deposition is not negligible, the P/G partitioning of PCBs in ambient atmosphere is not in equilibrium, but in a steady or quasi-steady state. Similar to PBDEs, the properties of individual PCB congeners, such as KOA, are the primary factors affecting the P/G partitioning of PCBs. © 2021 Elsevier Ltd
关键词	Equilibrium Octanol-air partition coefficient Particle/gas partitioning PCBs Steady state
语种	英语
scopus关键词	Forecasting; Mean square error; Monitoring; Polychlorinated biphenyls; Rural areas; Urban growth; Volatile organic compounds; Datapoints; Equilibrium; Equilibrium modelling; Equilibrium state; Octanol/air partition coefficient; Particle/gas partitioning; Partitioning behaviours; Polychlorinated biphenyl congener; Root mean square errors; Steady state; Organic pollutants
来源期刊	ATMOSPHERIC ENVIRONMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/248132
作者单位	Department of Marine Sciences, Marine College, Shandong University, Weihai, 264209, China; International Joint Research Center for Persistent Toxic Substances IJRC-PTS, State Key Laboratory of Urban Water Resource and Environment/ School of Environment, Harbin Institute of Technology, Harbin, 150090, China; IJRC-PTS, College of Environmental Science and Engineering, Dalian Maritime University, Dalian, China; IJRC-PTS-NA, Toronto, Ontario M2N 6X9, Canada; Institute of Natural Sciences, North-Eastern Federal University, Russian Federation; Institute of Ocean Sciences, Department of Fisheries and Oceans, P.O. Box 6000, Sidney, BC V8L 4B2, Canada; Centre for Earth Observation Science, University of Manitoba, Winnipeg, R3T 2N2, Canada
推荐引用方式 GB/T 7714	Qiao L.-N.,Ma W.-L.,Liu L.-Y.,et al. Particle/gas partitioning behavior of polychlorinated biphenyls (PCBs) in global atmosphere: Equilibrium or steady state?[J],2022.
APA	Qiao L.-N..,Ma W.-L..,Liu L.-Y..,Zhang Z.-F..,Song W.-W..,...&Li Y.-F..(2022).Particle/gas partitioning behavior of polychlorinated biphenyls (PCBs) in global atmosphere: Equilibrium or steady state?.ATMOSPHERIC ENVIRONMENT.
MLA	Qiao L.-N.,et al."Particle/gas partitioning behavior of polychlorinated biphenyls (PCBs) in global atmosphere: Equilibrium or steady state?".ATMOSPHERIC ENVIRONMENT (2022).