This standard specifies the spectrophotometric method for the determination of nitrogen oxides in workshop air by naphthaleneethylenediamine hydrochloride. This standard applies to the determination of nitrogen oxides in the air of production sites that manufacture or use nitric acid and nitro compounds to decompose, such as explosive explosions.
GB/T 16032-1995 Workplace air--Determination of nitrogen oxides--Naphthyl ethylenediamine dihydrochloride spectrophotometric method was changed to GBZ/T 160.29-2004 Methods for determination of inorganic nitrogen compounds in the air workplace.