A method for the preconcentration and determination of Pd, Pt, and Au in ore was developed. A basic alumina sorbent with an 0.01 M HCl conditioning wash was used for the retention of chloro-complexed noble metals, which were then eluted with a 3% thiourea and a 10% aqua regia mixture. Flow injection was used for introduction of eluates into inductively coupled plasma mass spectrometry to effectively mitigate signal drift typically caused by thiourea with direct nebulization. Using this method, complete recovery (i.e. a 25-fold preconcentration) was achieved for Pd and Pt with an 8-fold recovery for Au and effective removal of matrix interferences. The method was validated using CDN-PGMS-29 ore reference material: agreement with certified concentrations of Pd, Pt and Au was achieved based on a Student’s t-test at the 95% confidence level. This simple, low-cost method enables efficient preconcentration of Pd, Pt and Au, making it well suited for trace determination of Pt, Pd and Au for geological applications.