发明名称 |
Isopotential available ion extractor |
摘要 |
A reusable extractor for obtaining a representative sample of the exchangeable ions from a complex heterogeneously saturated ion exchange system such as soil or other complex and colloidal matrices at various oxidation-reduction potentials without the need for costly extraction and purification steps. The extractor comprises a microporous dialysis membrane tube filled with cation- or anion-exchange resin beads. Extraction is effected by equilibrating homoionically saturated ion-exchange resin beads with a sample of the complex matrix under study. The extractor enables simple, rapid, multiple-element assays and provides the new capability of extracting exchangeable ions from stream, lake, and marine sediments in situ.
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申请公布号 |
US4816161(A) |
申请公布日期 |
1989.03.28 |
申请号 |
US19870127021 |
申请日期 |
1987.11.27 |
申请人 |
THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF AGRICULTURE |
发明人 |
OLNESS, ALAN E.;DAHLEM, CHRISTOPHER;BOHLMAN, LARRY F. |
分类号 |
B01D15/04;B01D61/28;B01D63/06;G01N33/24;(IPC1-7):B01D15/04 |
主分类号 |
B01D15/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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