Qualitative Analysis by Spot Tests: Inorganic and Organic Applications

acid test solution added alcoholic solution aldehyde alizarin alkali aluminium ammonia ammonium analyt benzidine bismuth blank test blue colour bromine brown calcium capillary carried cent solution Chem chromate chromium cobalt complex compounds conc Concentration Limit copper decolorised detected dilute dimethylglyoxime dissolved drop dtsch dyestuff evaporated Feigl ferric ferrocyanide filter paper fleck fluoride formation formed give green H₂O heating hydrazine hydrochloric acid hydrogen peroxide insoluble interfere iodine iodine-azide ions iron Limit of Identification magnesium manganese mercury metals METHOD micro-crucible Mikrochemie mixture molybdate neutral NH₂ nickel nitric acid oxalic oxidation oxidising palladium placed on filter platinum potassium cyanide potassium iodide precipitate presence react reaction reagent reagent solution red colour reduced rhodanine salts sample sensitive silver nitrate small amounts sodium hydroxide soluble solution is mixed solution is placed spot plate spot test stannous chloride sulphate sulphide sulphuric acid thiocyanate thiosulphate treated tube violet colour yellow zinc zirconium