Patent ID: 9099208
Filing Date: 2015-08-04
Classification: C22B,G21F,H01L,Y02P

Abstract:
1. A method for purifying a tin solution comprising: providing an acidic tin solution having an alpha-emitting material comprising one or more of 210 Pb, 211 Bi and 212 Bi; contacting the tin solution with an ion exchange resin for a period of time sufficient to remove at least a portion of the alpha-emitting material comprising one or more of 210 Pb, 211 Bi and 212 Bi; and separating the tin solution from the ion exchange resin to provide a purified tin solution; wherein the ion exchange resin is chosen from one or more of iminodiacetic acid resins, nitrilotriacetic acid resins, phosphinoacetic acid resins, thiourea resins, picolylamine resins, quaternary amine resins, tertiary amine resins, aromatic amine resins, thiol resins, and sulfonated phenol resins.