The mixed-cation materials were obtain through a mortar-and-pestle grinding method where a 1: 1: 2 molar ratios of MA iodide, aromatic ammonium iodide
, and lead iodide were mixed and ground for 30 minutes.
"In the first step, we produced the appropriate reactants including solid iodine and cetyl trimethyl ammonium iodide
. Then, the appropriate compositions of the components in carbon paste electrode structure, including the type of the carbon, ratio of iodine to cetyl trimethyl ammonium iodide
, and the amount of pasting oil were optimized.
Figure 7 shows an overlay of simulated and experimental cyclic voltammogram of dicyano(fluoren-9-ylidene)methane: B at vitreous carbon cathode in dimethyl formamide containing 0.1 M tetra-n-butyl ammonium iodide
in the presence of an equivalent of phosphonium salt (PhCH:CHCH2P+Ph3NO3-), also exhibit formation of dianion which is sufficiently basic enough, stronger base than its bromo derivative, to accept a proton from the added phosphonium salt.
The effects of different organic solvents and their combinations were observed upon the variation of peak height of 1.3x10-4 M DBP solution in the presence of 0.01M tetra ethyl ammonium iodide (TEAI) (Table 1).
Williams and Kenyon  have used tetra methyl ammonium iodide (TMAI) as the electrolyte of choice for determining DBP by cathode-ray polarography in the presence of methanol solvent while Tanaka and Takeshita  have used 0.1 M acetic acid/ 0.1 M potassium chloride as electrolyte for determining total phthalates by DPP.
The chemicals tested as possible promoters were potassium iodide (KI), potassium carbonate ([K.sub.2]C[O.sub.3]), ammonium iodide (N[H.sub.4]I), iron oxide ([Fe.sub.2][O.sub.3]), iron (III) chloride (Fe[Cl.sub.3]), and zinc chloride (Zn[Cl.sub.2]).
The dry activated carbons (dried at 110[degrees]C for 4 h) were impregnated with potassium iodide (KI), potassium carbonate ([K.sub.2]C[O.sub.3]), ammonium iodide (N[H.sub.4]I), iron oxide ([Fe.sub.2][O.sub.3]), iron (III) chloride (Fe[Cl.sub.3]), or zinc chloride (Zn[Cl.sub.2]), by wet impregnation method.
For kinetic study Envirotrol bituminous (EB) activated carbon impregnated with 5.5 wt% ammonium iodide was used.
Experiments with 5.5 wt% ammonium iodide impregnated EB activated carbons were repeated in order to determine the random experimental error in the results.
Mellander, "Effect of cation size on the performance of dye sensitized nanocrystalline Ti[O.sub.2] solar cells based on quasi-solid state PAN electrolytes containing quaternary ammonium iodides
," Electrochimica Acta, vol.