fig1
![Tobacco-specific and combustion pollutants in settled house dust in Malta](https://image.oaes.cc/290ca799-1b19-485e-9c7a-f6b244f5dcd1/4621.fig.1.jpg)
Figure 1. Schematic diagram of the extraction, extract cleanup, and concentration method for the analyses of nicotine, nicotelline, TSNA, and PAH. TSNA: Tobacco-specific nitrosamines; PAH: polycyclic aromatic hydrocarbons.
Figure 1. Schematic diagram of the extraction, extract cleanup, and concentration method for the analyses of nicotine, nicotelline, TSNA, and PAH. TSNA: Tobacco-specific nitrosamines; PAH: polycyclic aromatic hydrocarbons.
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