关键词: 磷酸三丁酯, 泡沫塑料, 金, 吸附富集, 氰化液, 火焰原子吸收分光光度计

Abstract:

The tributyl phosphate was loaded evenly onto the foam by spray way，then prepared a tributyl phosphate plasticized foam，all of which increased the gold adsorption rate.Under certain acidity，using tributyl phosphate plasticizing foam-plastic enriched gold in cyanide liquid which had been treated by aqua regia，and liberated the adsorbed gold by hot thiourea solution，then determined the gold by FAAS.Cyanide solution samples on high， middle，low three levels were determined，the concentration of which were 2 586.4 μg/L，240.4 μg/L and 25.2 μg/L，and the recovery rates were 99.65%，101.08% and 101.19%.Taken 13 parts by weight to 200 μg gold standard solution and operated，its average quality was 198.45 μg，its relative standard deviation was 2.27%，osphate and the adsorption capacity is 8 mg，the adsorption rate of  gold can still reach 98.37%.Compared with the traditional methods of adsorption，the method has higher adsorption rate，more convenient operation，and it can meet requirements for gold content analysis in cyanide solution.

Key words: tributyl phosphate, foam plastic, gold, adsorption enrichment, cyanide solution, flame atomic , absorp-tion spectrometry