Method for measuring concentration of octadecylamine

The invention belongs to the technical field of chemical analysis and discloses a method for measuring the concentration of octadecylamine. The method comprises the following steps of: measuring the absorbance of standard octadecylamine solutions with different concentrations at a part within 256-270nm to obtain a standard curve, wherein each standard solution contains glacial acetic acid of the same concentration, and the concentration of the glacial acetic acid is 2-12ml/L; adding the glacial acetic acid of the same concentration to solutions to be measured and measuring the absorbance at a part with the same wavelength; and calculating the concentrations of the octadecylamine in the solutions to be measured according to the standard curve. The method can be used for conveniently, quickly and accurately measuring the concentration of the octadecylamine within the range of 10-50mg/L and has wide application aspects in the fields of raw material checking of the chemical industry, blowing out protection drug detection of thermal power plants, and the like.