Polymer-enhanced colorimetric detection of amine-based additives

A method of detecting an amine-based additive in a wellbore servicing fluid (WSF) comprising:

• (a) contacting an aliquot of the WSF with an amine detector reagent and an aqueous medium to form a detection solution;
• wherein the amine detector reagent comprises an amine detector compound and a polar organic solvent (POS);
• wherein the POS is characterized by a flash point at ambient pressure of equal to or greater than about 105° C.;
• wherein the WSF comprises the amine-based additive;
• wherein the detection solution is characterized by at least one absorption peak wavelength in the range of from about 380 nanometers (nm) to about 760 nm;
• and wherein the at least one absorption peak wavelength is determined by ultraviolet-visible (UV-VIS) spectroscopy;
• (b) detecting an absorption intensity for the detection solution at a wavelength within about ±20% of the at least one absorption peak wavelength;
• wherein detecting comprises UV-VIS spectroscopy detecting, colorimetry detecting, visual detecting, or combinations thereof;
• (c) comparing the absorption intensity of the detection solution at the wavelength within about ±20% of the at least one absorption peak wavelength with a target absorption intensity of the amine-based additive to determine the amount of amine-based additive in the WSF;
• and
• (d) comparing the amount of amine-based additive in the WSF with a target amount of the amine-based additive.