METHOD OF DETERMINATION OF AMOUNT OF ABSORBED NITRIC OXIDES OF EXPLOSION PRODUCTS Russian patent published in 1998 - IPC

FIELD: mining industry for estimation of ecological harmfulness of explosion products. SUBSTANCE: a blast hole is drilled to a depth of 5 to 10 m, and a charge of explosive under investigation weighing 10 to 50 kg is placed in it. A background air sample is taken in the blast hole, and concentrations of nitrogen and argon are determined. The charge is blasted by means that are standard for the given enterprise. 5 to 15 minutes after the blast gas samples are taken in the blast hole. The gas samples are subjected to a laboratory analysis on a chromatograph with presentation of concentrations of carbon monoxide and dioxide, hydrogen, methane, oxygen, nitrogen, nitric and argon oxides. The amount of gaseous explosion products $$$ is determined by a definite formula, and the amount of absorbed nitric oxides is determined by substituting the found value in another formula. EFFECT: facilitated procedure.