Using an iridium cruicble waste with a containing Iridium of 70% as the raw material,iridium powder was obtained by the steps of Al-alloying,acid leaching,Na2O2-melting,aqua regia leaching,deep purification of the solution and treatment of the mother liquor after the precipitating (NH4)2IrCl6 .

Kinetic spectrophotometric determination of trace iridium with oxidation of methyl blue by KIO_4;

Colour Reaction of Iridium(Ⅲ) with 2-(5 -Bromo-2-pyridylazo)-5 -dimethylamino-aminobenzene and Its Application;

Discoloring Spectrophotomeric Deterination of Iridium(IV) by Iridium(IV)-Potassium Bromate-2-(4-Chloro-2-Phosphonopheny) azo-7-(2,4,6-trichloro-Phenyl)azo-1,8-dinyaroxy-3,6-uaphthalene Dieulfonie Acid System;

Catalytic discoloring spectrophotometry for the determination of trace amount of iridium(Ⅳ);

Catalytic spectrophotometric determination of trace iridium(Ⅳ) using iridium(Ⅳ)-KIO_4-chlorophosphonazo-mA system;

Based on the catalytic effects of iridium(Ⅳ) on the oxidation reactions of orange G(OG) by KIO_4 in H_3PO_4 medium,a new kinetic spectrophotometric method for determination of trace iridium(Ⅳ) was established.

Research and application of microwave-assisted digestion technique for analysis of Rh,Ir,Pt,Pd in difficultly decomposed precious metals and their materials;

Study of the Ag, Rh, Ir complexes with 2-mercaptobenzothiazole by HPLC;

Small - scale Fire Assay and ICP - AES Determination of Pt, Pd, Rh, Ir in Geological Samples;