Peat burning – An important source of pyridines in the earth atmosphere was written by Kosyakov, Dmitry S.;Ul’yanovskii, Nikolay V.;Latkin, Tomas B.;Pokryshkin, Sergey A.;Berzhonskis, Valeria R.;Polyakova, Olga V.;Lebedev, Albert T.. And the article was included in Environmental Pollution (Oxford, United Kingdom) in 2020.Related Products of 626-64-2 This article mentions the following:
Studies of the chem. composition of atm. aerosols, rain water and snow in various regions of the globe quite often show the presence of pyridine and a number of its low mass derivatives Nevertheless, the sources of those compounds in the environment have not yet been established and definitely require elucidation, supported by reliable exptl. results. In the present work the chem. composition of peat combustion products as one of the important sources of atm. aerosol emission is studied by two-dimensional gas chromatog. – high-resolution mass spectrometry with a focus on the detection of pyridine derivatives Twenty-five compounds of this class were reliably identified and quantified in laboratory experiments on peat burning. Among them 3-hydroxypyridine predominates, while the rest analytes are mostly represented by alkyl derivatives: pyridine, 2-methylpyridine, 3-methylpyridine, 2,5-dimethylpyridine, 2,6-dimethylpyridine, 2-ethylpyridine, lutidines (in order of decreasing concentration). The experiments on peat thermal decomposition by pyrolysis GC-MS demonstrated that the maximum concentrations as well as the number of detected analytes were found under conditions of oxygen lack and a temperature of about 500°C, i.e. characteristic conditions of peat wildfires. The observed levels of pyridines’ emission recalculated on the peat dry weight exceeded 200 mg kg-1. The obtained results allow concluding that peat burning may be the major and still underestimated source of pyridine and lower alkylpyridines in the Earth atm. In the experiment, the researchers used many compounds, for example, Pyridin-4-ol (cas: 626-64-2Related Products of 626-64-2).
Pyridin-4-ol (cas: 626-64-2) belongs to pyridine derivatives. In contrast to benzene, Pyridine’s electron density is not evenly distributed over the ring, reflecting the negative inductive effect of the nitrogen atom. Halopyridines are particularly attractive synthetic building blocks in a variety of cross-coupling methods, including the Suzuki-Miyaura cross-coupling reaction.Related Products of 626-64-2