| 摘要 |
<p>Aqueous solutions of chlorine dioxide are disclosed. The solutions are substantially free of transition metal ions, transition metal oxides, particulate contaminants. The solutions are uniquely stable with respect to their chlorine dioxide concentration. The solutions can contain chlorine dioxide in the concentration range of about 100 ppm or more to about 10,000 ppm, more preferably about 1,000 ppm or more to about 5,000 ppm and even more preferably about 2,000 ppm or more to about 4,000 ppm, and most preferably about 3,000 ppm. Preferably the solutions are substantially free of organic carbon and metal ions. Methods are disclosed for preparing aqueous solutions of chlorine dioxide comprising (1) purifying water by at least two methods selected from the group consisting of deionization, distillation, reverse osmosis (RO) filtration, carbon filtration, microporous filtration, ultrafiltration, hyperfiltration, ultraviolet oxidation, and electrodialysis, and (2) dissolving filtered chlorine dioxide gas into the water.</p> |
