Quaternary amines anions

Ion exchange benzene sulphonic acid (cation exchange) or quaternary amine (anion exchange). 

Deleterious Effect of Quaternary Amines. Anion exchange membranes are all amine based and amines, even quaternary, may not be compatible with silver halide electrodes because they accelerate silver deposition on the cathode. 

The adsorption of lead (and bismuth) on a strong base quaternary amine anion-exchange resin In hydrochloric acid solution has been Investigated in detail by Nelson and Kraus (N2). 

FIA—monolithic 9.5-130.0 pg column (quaternary amine anion exchanger) 2.9 pg mL Cola drink Fruit juice Black tea 7h- [39]... 

Weakly basic anion resins derive their functionality from primary (R-NH), secondary (R-NHR ), tertiary (R-N-R 2), and sometimes quaternary amine groups. The weakly basic resin readily absorbs such free mineral acids as hydrochloric and sulfuric, and the reactions may be represented according to the following ... 

The presence of anionic or cationic groups at a 0.4 M.S. level inhibited adsorption and interlayer entrapment of 2.0 M.S. hydroxyethyl cellulose(HEC) from fresh water solutions. The lack of adsorption of the cationic HEC is surprising it is related to hydration of the quaternary amine group. Increasing adsorption and interlayer entrapment is observed with both the cationic and anionic HECs with increasing sodium chloride concentration. 

Polymethacrylate Strong anion exchanger (quaternary amine) ProSwift SAX Dionex Corporation 50x4.6mm 50x 1 mm Ion exchange chromatography of proteins... 

Strong- and weak-base resins exchange anions with their aqueous environment and therefore extract only metals that form anionic complexes in solution. Strong- and weak-base resins display a similar affinity for anionic species, which increases with the charge and the polarizability of the anion. Strong-base resins have quaternary amine functional groups that possess a permanent... 

SAX Aromatic Quaternary amine Salt buffers AN, MeOH, H20 Anions... 

Anion exchange membranes can be made from the same crosslinked polystyrene membrane base by post-treatment with monochloromethyl ether and aluminum chloride to introduce chloromethyl groups into the benzene ring, followed by formation of quaternary amines with trimethyl amine ... 

The tertiary and quaternary amine salts of l,3-diphenyl-2-pyrazoline derivatives (Table 7.9) are brilliant, moderately lightfast brighteners for (modified) polyacrylonitriles. Some can also be used to brighten cellulose acetate. Depending on the structure and nature of the anion, concentrated aqueous solutions with long shelf lives can be obtained such products are needed, for example, in gel brightening. 

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