Some factors of smoke are characteristic in the combustion resource. Guaiacol and its derivatives are solutions of pyrolysis of lignin and are characteristic of Wooden smoke; other markers are syringol and derivates, and other methoxy phenols. Retene, an item of pyrolysis of conifer trees, is really an indicator of https://broadfar.com/oraco-global-trends-in-heat-not-burn-products/