Spectral characteristics of dissolved organic carbon derived from biomass-pyrogenic smoke (SDOC) in the aqueous environment and its solubilization effect on hydrophobic organic pollutants was written by Zhang, Huiying;Wu, Liang;Qian, Wei;Ni, Jinzhi;Wei, Ran;Qi, Zhichong;Chen, Weifeng. And the article was included in Water Research in 2021.SDS of cas: 101-20-2 This article mentions the following:
Dissolved organic carbon derived from biomass-pyrogenic smoke (SDOC) can be transported and deposited with atm. aerosols, enter aqueous environments, and possibly alter aqueous chem. and quality. However, the characteristics of SDOC in aqueous environments and their effects on the fate of hydrophobic organic pollutants are poorly understood. In this study, we found that the emitted SDOC is 7.2∼19.6 weight% of biochar retained in situ after biomass pyrolysis, and the emitted SDOC is approx. 1-3 orders of magnitude greater than dissolved organic carbon (DOC) released from biochar in a short term, which indicates that SDOC is a more important source of DOC in aqueous environments relative to biochar-released DOC after a biomass burning/pyrolysis event. The characteristics of SDOC in aqueous environments are dominated by the <1000 Da fraction, which accounts for >96 weight% of bulk SDOC. In comparison with DOC in biochar, natural water, and soil, the S275-295 value of SDOC (0.037-0.053) is significantly greater, further indicating that SDOC has a smaller mol. size. Moreover, fluorescence EEM suggests that a fluorescence component located at the Ex/Em of 205/310 nm and the combinational ranges of fluorescence index (1.28-2.28), humification index (0.07-0.80), and biol. index (1.16-1.72) can be used to identify SDOC from DOC in other media. Solubilization experiments indicated that SDOC (20 mg/L) improved the solubility of hydrophobic pollutants (pyrene and triclocarban) by 2-6 folds in aqueous environments, which potentially enhances the mobility of pollutants and enlarges the potential risk region. This study indicates that SDOC may cause a severe harm to aqueous environments in addition to the atm. The results have profound implications for comprehensive assessments of the environmental effects of SDOC while promoting its identification and elucidating its behavior in aqueous environments. In the experiment, the researchers used many compounds, for example, 1-(4-Chlorophenyl)-3-(3,4-dichlorophenyl)urea (cas: 101-20-2SDS of cas: 101-20-2).
1-(4-Chlorophenyl)-3-(3,4-dichlorophenyl)urea (cas: 101-20-2) belongs to organic chlorides. Organic chlorides are compounds containing a carbon-chlorine bond, which are widely used in the oil field as a wax dissolver. Alkyl chlorides readily react with amines to give substituted amines. Alkyl chlorides are substituted by softer halides such as the iodide in the Finkelstein reaction.SDS of cas: 101-20-2
Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics