二苯硫脲泡沫塑料分离富集原子吸收法测定地质样品中痕量金和银

Separation and Concentration of Trace Gold and Silver with Diphenylthiourea (DPTU) Loaded Foam and Its Determination by AAS in Geological Materials

研究了二苯硫脲(DPTU)泡沫塑料的制备及其对痕量金和银的吸附性能.这种泡沫塑料由王水中吸附金和银的选择性好,吸附率高.可同时分离富集井测定地质样品中的金和银,流程简便.并有可能用于金属、合金及纯试剂等样品.

The preparation of DPTU foam and its absorption behaviour of gold and silver have been studied in detail. DPTU foam can absorb gold and silver from aqua regia solution with high selectivity. The method has been applied to geochemical standard reference samples and satisfactory results were obtained.