Measuring method of concentration of cationic surface organic active substances in air

Measuring method of concentration of cationic surface organic active substances in air

  • CN 103,776,783 A
  • Filed: 02/20/2014
  • Published: 05/07/2014
  • Est. Priority Date: 02/20/2014
  • Status: Active Application
First Claim
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1. a measuring method for cationic surface organic active substance concentration in atmosphere, is characterized in that, described measuring method comprises sample collection pre-treatment step;

  • Sample pretreatment step;

    Calibration steps and determination step;

    Wherein, obtain PM by described sample pretreatment 2.5sample extracting solution;

    Described determination step is;

    Get PM 2.5sample extracting solution 50mL adds in 60mL extraction flask, adds the acetate buffer 0.4mL of pH=5;

    Continue to add 0.1mL disulfine blue solution (2.58g/L), move into 5mL chloroform after shaking up again, jolting 1min fully mixes, and notes venting, leaves standstill;

    After layering, draw chloroform in cuvette with syringe, take pure chloroform as contrast, measure PM with 628nm wavelength 2.5the absorbance of sample extracting solution.

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