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https://www.selleckchem.com/pr....oducts/5-n-ethyl-n-i
The Loess Plateau has one of the most vulnerable ecological environments in the world, but it also contains abundant oil and gas resources that are regularly exploited, which has resulted in serious environmental problems. Therefore, it is important to analyze the polycyclic aromatic hydrocarbons (PAHs) present in the topsoil of this region. The ∑16PAHs concentrations between 1980-1999 and 2000-2019 ranged from 1134.20-15871.04 and 1010.67-18,068.80 µg kg-1, with average values of 5021.30 and 5662.82 µg kg-1

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