Separation nitrates

The selenate reductase from Enterobacter cloacae SLDla-1 functions only under aerobic conditions, and is not able to serve as an electron acceptor for anaerobic growth, in contrast to the periplasmic enzyme from Thauera selenatis (Schroder et al. 1997). In E. cloacae there are separate nitrate and selenate reductases, both of which are membrane-bound. The selenate reductase is able to reduce chlorate and bromate though not nitrate, contains Mo, heme and nonheme iron, and consists of three subunits in an a3p3y3 configuration. 

While one of the nitrators is in use as a separator, nitration is carried out in the other one and vice versa thus maintaining uninterrupted operation. 

The separated nitrated product is continuously drawn off from the first separator into a stainless -steel wash tank equipped with a cylindrical baffle and an impeller-type agitator. Water is continuously added to the washer and the mixt overflows... 

A receptor model analysis in western Germany separated nitrate-rich from sulphate-rich secondary aerosols, with the latter being accompanied with vanadium and nickel [7]. Such factor composition pinpoints to heavy oil combustion sources which can be found, e.g. in oil refineries, off-shore platforms and overseas ships. In addition, trans-boundary pollution from eastern European countries is a significant source. 

The composition of the nitration products obtained in the separate nitrators is reflected by the melting points of the products ... 

Show the resonance structures for nitrate, NO3. Although the three nitrate resonance structures are written separately, nitrate is a combination of all three structures. 

Lin and Long [41] applied ELM to effectively separate nitrate ions (94% efficiency) from water with tri-n-octyl amine as the extractant and sodium carbonate as the internal phase. H+ ions were also transported along with NOs from external to the internal phase (cotransport). Kobya et al. [86] studied the kinetics of thiocyanate ion removal from aqueous potassium thiocyanate solution by counter-transport process using quaternary ammonium salt of hexadecyl trimethyl ammonium chloride as the cander and sodium chloride solution as the stripping phase. 

When the concentration of alcohol is increased, the reduction is displaced towards more negative potentials. The reduction of polynitrate esters will occur at more positive potentials when the number of nitrate ester groups in the molecule is increased. The change will be approximately 0.1 V per each new nitrate ester group. Under certain conditions (water/methanol solutions), the reduction of the separate nitrate ester groups can be detected. 

Trivalent metals seem to not interact with the rare earth nitrates in solution. For instance, solubility isotherms in the system Al2(N03)3-Y(N03)3 H20 indicate that only separate nitrate hydrates of AP+ and are formed (Kuznetsova et al., 1981). 

Styrenated fatty acids and alkyd resins spectrophoto-metric analysis using a modified Kappelmeier procedure, with ultraviolet determination of polymerized styrene Styrene and fumerate in esters and resins 0.1-2% styrene in polystyrene at 250-260 m/i direct determination polystyrene in a copolymer in chloroform solution at 269 mu partial separation, nitration, and determination as neutralized p-nitrobenzoic acid, of bound styrene in raw and cured polymers, using a three-wavelength ultraviolet measurement to check for unexpected interfer-... 

The dialysis serves to separate nitrate ions from interfering substances like colloids and coloured organic compounds. 

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