THE SEPARATION OF TELLURIUM AND SELENIUM BY POLYURETHANE FOAM SORBENTS

被引:26
作者
STEWART, II [1 ]
CHOW, A [1 ]
机构
[1] UNIV MANITOBA,DEPT CHEM,WINNIPEG R3T 2N2,MANITOBA,CANADA
关键词
D O I
10.1016/0039-9140(93)80208-9
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
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.
引用
收藏
页码:1345 / 1352
页数:8
相关论文
共 11 条
[1]   QUASI-SPHERICAL SOLID POLYMER MEMBRANES IN SEPARATION CHEMISTRY - POLYURETHANE FOAMS AS SORBENTS - RECENT ADVANCES [J].
BRAUN, T .
FRESENIUS ZEITSCHRIFT FUR ANALYTISCHE CHEMIE, 1989, 333 (08) :785-792
[2]   TRENDS IN USING RESILIENT POLYURETHANE FOAMS AS SORBENTS IN ANALYTICAL-CHEMISTRY [J].
BRAUN, T .
FRESENIUS ZEITSCHRIFT FUR ANALYTISCHE CHEMIE, 1983, 314 (07) :652-656
[3]   POLYURETHANE FOAMS AND MICROSPHERES IN ANALYTICAL-CHEMISTRY - IMPROVED LIQUID-SOLID, GAS-SOLID AND LIQUID-LIQUID CONTACT VIA A NEW GEOMETRY OF SOLID-PHASE [J].
BRAUN, T ;
FARAG, AB .
ANALYTICA CHIMICA ACTA, 1978, 99 (01) :1-36
[4]  
Braun T., 1985, POLYURETHANE FOAM SO
[5]  
BRAUN T, 1984, CELL POLYM, V3, P81
[6]  
Cooper W. C., 1971, TELLURIUM
[7]  
Korkisch J., 1969, MODERN METHODS SEPAR
[8]  
Moody G.J., 1982, CHROMATOGRAPHIC SEPA
[9]   EXTRACTIONS AND SEPARATIONS WITH FOAMED PLASTICS AND RUBBERS - REVIEW [J].
MOODY, GJ ;
THOMAS, JDR .
ANALYST, 1979, 104 (1234) :1-15
[10]  
Nazarenko II, 1972, ANAL CHEM SELENIUM T