Plasma mass spectrum/light spectrum determination method for precious metals in bismuth test enrichment geological sample

The invention discloses a plasma mass spectrum/light spectrum determination method for precious metals in a bismuth assaying enriched geological sample and belongs to the technical field of analysis and testing of precious metals in geological samples. The method comprises the following steps of: taking tellurium as a cupellation protective agent, and replacing a conventional cupel with molten boric acid or a boric acid mixture; and putting a bismuth button into a cupellation crucible containing molten boric acid or a boric acid mixture for cupellation, forming bismuth-tellurium combined particles in a manner of remaining bismuth cupellation, digesting the bismuth-tellurium combined particles, and determining precious metals by adopting an ICP-MS/ICP-AES method. According to the method, quantitative enrichment and simultaneous determination of seven precious metals (Au, Ag, Pt, Pd, Rh, Ir and Ru) by the bismuth assaying method are realized, the enrichment determination efficiency of the bismuth assaying is im