Raman spectrum detection method of phthalate plasticizer

[0037] Raman spectroscopy detection method for phthalate plasticizers, including the following:

[0038] 1. Preparation of surface enhancer and drawing of standard curve

[0039] (1) Preparation of gold sol: take chloroauric acid (HAuCl 4 ) powder into a 100mL volumetric flask, configured into 100mL aqueous chloroauric acid solution with a weight content of 1%, and refrigerated at 4°C for later use. Add 99mL water to the three-neck round bottom flask, then add 1mL prepared 1% chloroauric acid aqueous solution, heat to a slight boil (use a thermometer to insert the solution to observe the temperature, 92-93°C), quickly add 4mL of the newly prepared weight content of 1% trisodium citrate aqueous solution (need to be newly prepared each time, take 0.04g trisodium citrate and add to 4mL water), then keep boiling (use a thermometer inserted into the solution to observe the temperature, 95°C), stop heating after 25min, and cool . The preparation process requires uniform stirring, usin