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1976年Myasoedova合成了含有吡唑基构3(5)-甲基吡唑树脂并对用其从酸性溶液选择性富集贵金属元素进行了研究。这种螯合树脂在有铜、镍、钴、铁等贱金属共存时对贵金属有良好的选择性,是富集非挥发性贵金属的组试剂。它对热和强酸溶液是稳定的。其结构为: 1977年Myasoedova等指出,先将非挥发性贵金属从复杂组分的溶液中用混合富集剂一硫化铜和2-苯并噻唑硫醇,预沉出,之后再用3(5)-甲基吡唑树脂富集贵金属。
In 1976, Myasoedova synthesized pyrazolyl-containing 3 (5) -methyl pyrazole resin and studied the selective enrichment of noble metal elements from acidic solutions. The chelating resin in the presence of copper, nickel, cobalt, iron and other base metals coexistence of the precious metal has a good selectivity, is rich in non-volatile precious metals reagents. It is stable to hot and strong acids. Its structure is as follows: Myasoedova 1977, etc. pointed out that the first non-volatile precious metals from the complex solution of a mixture of copper sulfide and 2-benzothiazole mercapto-thiol mixed pre-precipitation, and then with 3 (5 ) - Methylpyrazole resin enriches precious metals.