Stewart I I, Chow A
Department of Chemistry, University of Manitoba, Winnipeg, MB, Canada.
Talanta. 1993 Sep;40(9):1345-52. doi: 10.1016/0039-9140(93)80208-9.
Tellurium and selenium can be sorbed from hydrochloric acid and hydrobromic acid solution by both polyether and polyester-based polyurethane foam. Although some acid is needed, the substitution of sodium chloride or sodium bromide increases the extraction significantly. Tellurium is extracted rapidly with > 99% sorbed in 2 min from 1.0/5.0M and 2.0/4.0M hydrochloric acid/sodium bromide. Selenium can also be sorbed quantitatively but much more slowly so that a separation is possible based on the relative rates of extraction. The capacity of polyether foam is 3% by weight of tellurium.
聚醚型和聚酯型聚氨酯泡沫均可从盐酸和氢溴酸溶液中吸附碲和硒。虽然需要一些酸，但用氯化钠或溴化钠替代会显著提高萃取率。碲能被快速萃取，在2分钟内，从1.0/5.0M和2.0/4.0M盐酸/溴化钠溶液中吸附率大于99%。硒也能被定量吸附，但速度要慢得多，因此基于相对萃取速率可实现分离。聚醚泡沫对碲的吸附容量为3%（重量）。
