Method for measuring boron content in low-alloy steel through ICP-AES method for dissolving sample by using polyacid

The invention belongs to the technical field of the chemical analysis application, and specifically relates to a method for measuring boron content in low-alloy steel through ICP-AES method for dissolving sample by using polyacid. The method comprises the following steps: dissolving the sample by adopting nitric acid and hydrochloric acid at low temperature, the sulfuric acid, the phosphoric acidand the mannitol digest the carbon and prevent boron element from volatilizing; taking co-matrix standard boron solution as a working curve, and quickly measuring boron content in low-alloy steel at the wavelength of 249.677nm on an inductive coupling plasma atomic emission spectrometer (ICP-AES). The measurement method disclosed by the invention overcomes the defects of the general method, the boron is hard to volatize, the accuracy of detecting the boron content is improved, the method has good repeatability and stability, the sample analysis cost is saved, the fast analysis detection can berealized, and the method