Abstract This experiment is proposed for the rapid and visual inspection of nitrate ion at the scene of the explosion case, which solves the problems of high toxicity, slow response speed of Griss reagent and inconvenience of carrying the existing instrument analysis methods in the Micro Material Evidence Analysis Experiment. 8-hydroxyquinoline is used to replace carcinogenic α- naphthylamine or naphthalene ethylenediamine hydrochloride, 4-aminobenzoic acid replaces p-aminobenzenesulfonic acid; Manganese sulfate, as a catalyst, can form a complex with 8-hydroxyquinoline to improve the speed of azo reaction. With obvious visual color change (colorless to orange red), qualitative and semi quantitative analysis of nitrate ions in the residues at the scene of explosion cases can be achieved.
LI Hong-Da. Visual Detection of Nitrate Ions in Explosive Residues: Powder Reagent Assay[J]. Chinese Journal of Chemical Education, 2023, 44(16): 102-106.
