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秋兰姆二硫化大孔型螯合树脂含有—C—S—S—C—螯合基团,在pH5-10时能定量吸附Cu~(2+)、Pb~(2+)、Cd~(2+)离子,用5N硝酸能从树脂上定量解脱下来。当大量存在Ca~(2+)、Mg~(2+)、Fe~(3+)、Al~(3+)、SO_4~(2-)、NO_3~-、Cl~-时不影响对Cu~(2+)、Pb~(2+)、Cd~(2+)的定量吸附。对Cu~(2+)、Pb~(2+)、Cd~(2+)回收率分别为96-105％,95-105％,94-105％。测定精密度相对标准偏差Cu~(2+)、Pb~(2+)、Cd~(2+)分别为±2.8％,±3.2％,±3.4％。
The thiourea disulfide macroporous chelating resin contains -C-S-S-C-chelating groups and can quantitatively adsorb Cu 2+, Pb 2+, Cd 2+ at pH 5-10, (2+) ions, 5N nitric acid can be quantitatively released from the resin. In the presence of Ca 2+, Mg 2+, Fe 3+, Al 3+, SO 4 2-, NO 3 -, and Cl ~ ~ (2 +), Pb ~ (2 +) and Cd ~ (2+). The recoveries of Cu ~ (2 +), Pb ~ (2 +) and Cd ~ (2+) were 96-105%, 95-105% and 94-105% respectively. The relative standard deviations (RSDs) were ± 2.8%, ± 3.2% and ± 3.4% for Cu 2+, Pb 2+ and Cd 2+, respectively.