https://www.selleckchem.com/pr....oducts/eidd-2801.htm
5 in Baoding were ranked asExpressway less then Secondary roads less then Branch roads less then Major Roads. ③ Further study results of K2.5 characteristics demonstrated that the average K2.5 was higher than 0.15 g·VKT-1 (the value recommended by US EPA) in Baoding City, which would cause an underestimate of road dust emissions and increase the uncertainty of the emissions inventory if the recommended value from the EPA were adopted. The K2.5 in Baoding City is relatively high, indicating that the road dust contains a significant num
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