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preface to fifteenth edition

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PRACTICAL LABORATORY INFORMATION 11.35<br />

TABLE 11.16<br />

Guide <strong>to</strong> Ion-Exchange Resins (Continued)<br />

Resin type and<br />

nominal percent<br />

cross-linkage<br />

Minimum wet<br />

capacity,<br />

mequiv · mL 1<br />

Density<br />

(nominal),<br />

g·mL 1<br />

Comments<br />

Selective ion exchange resins<br />

Duolite GT-73 1.3 1.30 Removal of Ag, Cd, Cu, Hg, and Pb.<br />

Amberlite IRA-<br />

0.6 1.05 Boron specific ion exchange resin.<br />

743A<br />

Amberlite IRC-718 1.0 1.14 Removal of transition metals.<br />

Chelex 100 0.4 0.65 Weakly acidic chelating resin with S-DVB<br />

matrix for heavy metal concentration.<br />

Anion exchanger9macroreticular type9strongly basic9quaternary ammonium functionality<br />

Amberlite IRA-910 1.1 1.09 Dimethylethanolamine styrene-DVB type<br />

which offers slightly less silica removal<br />

than Amberlite IRA resin, but offers improved<br />

regeneration efficiency.<br />

Amberlite IRA-938 0.5 1.20 Pore size distribution between 2500 and 23<br />

000 nm; suitable for removal of high molecular<br />

weight organic materials.<br />

Amberlite IRA-958 0.8 Acrylic-DVB; resistant <strong>to</strong> organic fouling.<br />

AG MP-1 1.0 0.70 Strongly basic macroporous anion exchanger<br />

with S-DVB matrix for separation<br />

of some enzymes, radioactive anions,<br />

and other applications.<br />

Cation exchange resin9macroreticular type9sulfonic acid functionality<br />

Amberlite 200 1.7 1.26 Styrene-DVB with 20% DVB by weight;<br />

superior physical stability and greater resistance<br />

<strong>to</strong> oxidation by fac<strong>to</strong>r of three<br />

over comparable gel type resin.<br />

AG MP-50 1.5 0.80 Strongly acidic macroporous cation exchanger<br />

with S-DVB matrix for separation<br />

of radioactive cations and other applications.<br />

Weak cation exchanger9macroreticular type9carboxylic acid or phenolic functionality<br />

Amberlite DP-1 2.5 1.17 Methacrylic acid-DVB; high resin capacity.<br />

Use pH 5.<br />

Amberlite IRC-50 3.5 1.25 Methacrylic acid-DVB. Selectivity adsorbs<br />

organic gases such as antibiotics, alkaloids,<br />

peptides, and amino acids. Use pH<br />

5.<br />

Duolite C-464 3.0 1.13 Polyacrylic resin with high capacity and<br />

outstanding resistance <strong>to</strong> osmotic shock.

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