Detection reagent for nitrate in hot pickled tuber mustard and detection method thereof

摘要: The invention provides a detection reagent for nitrate in hot pickled tuber mustard and method thereof. comprises, by weight, the following components of 12-16 parts toluidine blue, N-(1-naphthyl) ethylenediamine hydrochloride, 5-8 sulfanilamide, 3-5 sodium acetate, 1-4 acetone, 1-3 xylene sulfonate, 5-10 inorganic salt, 10-15 oxalic acid 80-100 water. comprises steps that is chopped then squeezed, after dregs are removed, juice taken diluted with water times, 2-3 drops added stirred min, changes solution color observed. Compared prior art, can more quickly detect whether content exceeds standard, precision rate measuring high, higher efficiency achieved.