KOA absorption model

Junge-Pankow model and Koa absorption model were found to simulate the data better than each other in different studies indicated by the coefficient of determination in Tables 2 and 3. In a Chicago study, Junge-Pankow model was found to fit the experimental PAH data better than Koa-based absorption model, while Koa-based absorption model better predicted the sorption of PCBs and PCDD/Fs, resolving the difference between multi-ortho and non-ortho PCBs (Hamer and Bidleman 1998). In a German study, Junge-Pankow model was found to be better than Koa-based absorption model for PCBs (Mandalakis and Stephanou 2007), although both models tend to underestimate the lower chlorinated PCBs. Another... 

Study by Lohmann et al. (2000) who examined partitioning of PCBs in the atmosphere of Manchester also drew the similar conclusion. On the contrary, Harner and Bidleman (1998) concluded that the Koa-based model is more suitable for PCBs compared to the Junge-Pankow model. Chen et al. found that Koa absorption model predicted better for most of PBDE congeners while Junge-Pankow model tended to overestimate the fractions of PBDEs in particle phase in a Chinese study (Chen et al. 2006). The prediction results may vary signihcantly with the assumption of different OM content and total surface area of particles (Shoeib et al. 2004 Chen et al. 2006 Cetin and Odabasi 2008). 

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