Ultraviolet absorption determination method of stationary pollution source waste gas nitrogen oxide

The invention discloses an ultraviolet absorption determination method of stationary pollution source waste gas nitrogen oxide. According to the method, an ultraviolet absorption method nitrogen oxide analyzer or a multi-component gas analyzer with the ultraviolet absorption method nitrogen oxide analyzing function is adopted as a monitor, nitric oxide is used for absorbing light with the characteristic wavelength of 200 nm to 230 nm in a near ultraviolet light area, nitrogen dioxide is used for absorbing light with the characteristic wavelength of 380 nm to 400 nm in the near ultraviolet light area, a Lambert-Beer law is adopted for quantifying the concentrate of the nitric oxide and the nitrogen dioxide in waste gas, and the discharging rate of the nitric oxide is further obtained through calculation. The method is suitable for determining NO and NO2 in the waste gas discharged by a stationary pollution source to meet the requirement for measuring the nitric oxide, and the method is established to meet the requirement for field pollution source supervision monitoring, CEMS comparison monitoring and data validity check and has the significance on developing and expanding ultraviolet absorbing method flue gas monitoring equipment matched with the method.