Study on arsenic removal in the preparation of feed grade zinc oxide by ammonia-ammonium sulfate method;

Study on liquid-solid flotation separation of lead(Ⅱ) by sodium nitrate-ammonium thiocyanate-rhodamine 6G system;

Study on floatation separation of Pd(Ⅱ) with ammonium thiocyanate-tetrabutyl ammonium bromide-water system;

Floatation separation of copper in sodium chloride-ammonium thiocyanate-cetylpyridine bromide system;

In light of the principle of vanadium's valent state change,after samples are dissolved by weak nitric acid,in medium of around 15% nitric acid,the oxidant ammonium persulphate is immediately used to selectively oxidize V~(4+) to V~(5+).

With industrial monomer solution of dimethyldiallylammonium chloride(DMDAAC) as raw material,ammonium persulphate(APS) as initiator and Na_4EDTA as chelating agent,using the methods of adding initiator all at once,graduated increasing of temperature and stepwise initiation and polymerization,the polymerization process of preparing poly-dimethyldiallylammonium chloride(PDMDAAC) was researched.

Poly-dimethyldiallylammonium chloride(PDMDAAC)was prepared by using industrial dimethyldiallylammonium chloride(DMDAAC)aqueous solution with known impurities as starting material,ammonium persulphate(APS)as initiator,without addition of any transferring and terminating agents.

Extraction separation of palladium by potassium iodide-ethanol in the presence of ammonium sulphate;

On the reaction kinetics in the preparation of ammonium sulphate from phosphogypsum and ammonium carbonate;

Effect of Precipilation with Polyethylene Glycol and Ammonium Sulphate on Ascite McAbs Activity;