Effect of methyltrioctylammonium chloride amount
The injection of the Aliquat 336 along with extraction solvent
made a stable cloudy solution. Consequently, the fast equilibrium
was achieved due to the formation of very fine solvent droplets,
which greatly increased the contact area between the extraction
solvent and aqueous phase the analyte was rapidly transferred from
aqueous phase to extraction solvent. Therefore, the amount of
Aliquat 336 on the extraction of carbendazim is very important.
For this purpose, 180 mL of carbon tetrachloride containing different
amounts of the Aliquat 336 (0.00–1.17% (w/v)) was injected into the
sample solutions. The experimental results showed that the absorbance
signal increased up to the concentration of 0.67% (w/v) of
Aliquat 336 and then remained constant. Thus, 0.67% (w/v) of
Aliquat 336 in CCl4 was chosen as the disperser-solvent mixture.