Burn Intensity Drives the Alteration of Phenolic Lignin to (Poly) Aromatic Hydrocarbons as Revealed by Pyrolysis Gas Chromatography-Mass Spectrometry (Py-GC/MS) was written by Chen, Huan;Wang, Jun-Jian;Ku, Pei-Jia;Tsui, Martin Tsz-Ki;Abney, Rebecca B.;Berhe, Asmeret Asefaw;Zhang, Qiang;Burton, Sarah D.;Dahlgren, Randy A.;Chow, Alex T.. And the article was included in Environmental Science & Technology in 2022.Recommanded Product: 2,3-Dihydrobenzo[b]furan This article mentions the following:
High-intensity wildfires alter the chem. composition of organic matter, which is expected to be distinctly different from low-intensity prescribed fires. Herein, we used pyrolysis gas chromatog./mass spectrometry (Py-GC/MS), in conjunction with solid-state 13C NMR and Fourier transform IR (FT-IR) spectroscopy, to assess chem. alterations from three wildfires and a long-term frequent prescribed fire site. Our results showed that black ash formed under moderate intensity burns contained less aromatic (ArH), polyaromatic hydrocarbon (PAH), and nitrogen-containing compounds (Ntg) but more lignin (LgC) and phenol compounds (PhC), compared to white ash formed under high intensity burns. Both 13C NMR and FT-IR confirmed a higher relative percentage of carboxyl carbon in white ash, indicating the potential for higher water solubility and more mobile carbon, relative to black ash. Compared to wildfires, ash from low-intensity prescribed fire contained less ArH, PAH, and Ntg and more LgC and PhC. Controlled laboratory burning trials indicated that organic matter alteration was sensitive to the burn temperature, but not related to the fuel type (pine vs. fir) nor oxygen absence/presence at high burn temperatures This study concludes that higher burn temperatures resulted in higher (poly)aromatic carbon/nitrogen and lower lignin/phenol compounds In the experiment, the researchers used many compounds, for example, 2,3-Dihydrobenzo[b]furan (cas: 496-16-2Recommanded Product: 2,3-Dihydrobenzo[b]furan).
2,3-Dihydrobenzo[b]furan (cas: 496-16-2) belongs to benzofurans derivatives. Benzofurans are compounds with a planar structure having 10 pi electrons that include the lone pair on oxygen atom, which makes it more susceptible to electrophilic attack. Introduction of benzofurans in organic synthesis, particularly drug synthesis, involves generally the use of their metalated species as nucleophiles in addition reactions or in metal-catalysed cross-coupling reactions.Recommanded Product: 2,3-Dihydrobenzo[b]furan
Referemce:
Benzofuran – Wikipedia,
Benzofuran | C8H6O – PubChem