Poly-2 was then evaluated in gold recovery from the ore concentrate to demonstrate the potential for sorbent recycling. Accordingly, 200 g of the ore concentrate and 300 mL tap water were added to a plastic bucket and mixed with a magnetic stirrer. TCCA (200 g) and sodium bromide (5.2 g) were added in two portions over a 1 day period, after which time the concentration of leached gold had plateaued. The leaching solution was then filtered and the filter cake was washed with water. The gold concentration of the filtered leach solution was 145 ppm, as measured by AAS. Poly-2 (10 g) was added to this solution to quench active oxidant and bind gold. The gold concentration was halved over a period of 24 hours so an additional 10 g portion of poly-2 was added, which was sufficient to bind >80% of the leached gold. The resulting poly-2-Au was isolated by filtration and then transferred to a round bottom flask equipped with a distillation apparatus. Heating poly-2-Au to 200 ºC under reduced pressure resulted in depolymerization of the sorbent; monomer 2 was distilled directly and recovered in a 45% yield (Fig. ). The remaining gold-rich residue was discovered to be insoluble in the TCCA leach solution, so the addition of a fresh leaching solution was used to precipitate and triturate the product. The resulting solid could then be isolated by filtration and pyrolyzed in a ceramic crucible using a butane torch, providing 59 mg of gold powder (Fig. and Fig. ). Analytical digestion and analysis by ICP-MS and ICP-OES indicated a gold purity of >99%. Importantly, the use of poly-2 was validated as a sorbent that can be depolymerized for recycling. While the regenerated monomer was recovered in modest yield, it should be noted that some of poly-2 was expected to be sacrificed to complexation with gold and oxidative degradation when quenching the leach solution. Furthermore, the purity of the gold isolated in this relatively simple technique reflects the extraordinary selectivity of the polysulfide sorbents for gold in complex mixtures.