Pleurotus eryngii immobilized Amberlite XAD-16 as a solid-phase biosorbent for preconcentrations of Cd2+ and Co2+ and their determination by ICP-OES

► Preconcentration of Cd and Co was successfully performed. ► ICP-OES was used in the determination. ► Validation of the method was checked by analysis of certified reference materials. ► Method has been successfully applied to edible vegetables with satisfactory results.