Droge, Steven T. J. published the artcileIon-Exchange Affinity of Organic Cations to Natural Organic Matter: Influence of Amine Type and Nonionic Interactions at Two Different pHs, Name: N-Benzyl-N,N-dibutylbutan-1-aminium chloride, the publication is Environmental Science & Technology (2013), 47(2), 798-806, database is CAplus and MEDLINE.
Sorption to standard soil organic matter (SOM) was studied for a wide variety of organic cations using a flow through method with fully aqueous medium as eluent. SOM sorption for weak bases (pKa 4.5-7) was stronger at pH 4.5 than at pH 7, indicating that the ion-exchange affinity of the cationic species to SOM was higher than the bulk partition coefficient of corresponding neutral species to SOM. At pH 4.5-7, the effect of pH on the sorption coefficients for strong bases with pKa >7 was small, within 0.3 log units. For cations with the mol. formula CxHyN, sorption was accurately predicted by a model accounting for size (increase with alkyl chain length) and type of charged group (1° amine >4° ammonium of equal size). In addition to the CxHyN-model, several empirical correction factors were derived from the data for organic cations with polar functional groups. Models based on KOW or pKa fail to explain differences in sorption affinity of the ionic species. Our data on ion-exchange affinities for 80 organic cations show many examples where specific chem. moieties, for example, CH2-units, aromatic rings or hydroxyl groups, contribute differently to the sorption coefficient as compared to bulk partitioning data of neutral compounds Other sorption models that were evaluated to explain variation between compounds suffered from outliers of >1 log unit and did not reduce relative log mean standard errors <0.5. A wider range of sorption coefficients and more sorption data in general are required to improve modeling efforts further.
Environmental Science & Technology published new progress about 23616-79-7. 23616-79-7 belongs to chlorides-buliding-blocks, auxiliary class Phase Transfer Catalyst, name is N-Benzyl-N,N-dibutylbutan-1-aminium chloride, and the molecular formula is C19H34ClN, Name: N-Benzyl-N,N-dibutylbutan-1-aminium chloride.
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