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制备了高功能基转化率的孪二羟基树脂,由此合成了含亚硫酸乙烯酯功能基(2.30毫摩尔/克树脂)和碳酸乙烯酯功能基(2.57毫摩尔/克树脂)的树脂4和5。在酸度范围内树脂4选择吸附Pt(Ⅱ),两者对Au(Ⅲ) 有高选择吸附性,而很少吸附共存的Pd(Ⅱ)、Pt(Ⅳ)及铁、钴、镍、铜、锰、锌、铅、镉等二价金属离子。树脂4对金的吸附容量为126(毫克 Au(Ⅲ)/克树脂),分配系数Kd为824(毫升/克),一次洗脱率达85％。树脂5的吸附容量为46.0(毫克 Au(Ⅲ)/克树脂),Kd为84.1(毫升/克)。两种树脂吸附Au(Ⅲ)的速率T_(1/2)分别为1、0.8小时.
A high functional group conversion geminal dihydroxy resin was prepared, whereby a resin 4 containing a vinylidene sulfite functional group (2.30 mmol / g resin) and a vinyl carbonate functional group (2.57 mmol / g resin) and 5. In the acidity range, Pt (Ⅱ) was selectively adsorbed on the resin 4, both of which had high selective adsorption to Au (Ⅲ) and little adsorption of Pd (Ⅱ), Pt (Ⅳ) Manganese, zinc, lead, cadmium and other divalent metal ions. The adsorption capacity of resin 4 to gold was 126 (mg Au (¢ ó) / g resin), and the partition coefficient Kd was 824 (ml / g) with an elution rate of 85%. The resin 5 had an adsorption capacity of 46.0 (mg Au (III) / g resin) and a Kd of 84.1 (ml / g). The adsorption rates of Au (Ⅲ) and T_ (1/2) for the two resins were 1.0 and 0.8 hours, respectively.