硫脲纤维素分离富集火焰原子吸收法测定地质样品中痕量金

Determination of trace gold in geological samples by FAAS after separation and preconcentration with thiourea chelating cotton cellulose

在王水介质中，使用硫脲纤维素吸附以除去金矿中其他离子的干扰，被吸附的金用硫脲溶液解脱并用原子吸收光谱测定。本法研究了分离和测定的条件，方法已成功地应用于地质样品中痕量金的测定。

In the medium of aqua regia, the trace gold was adsorbed on thiourea chelating cotton cellulose without interference of common ions in gold ores.The adsorbed gold was eluted with the solution thiourea and then determined by atomic absorption spectrometry.The conditions for separation and determination were investigated and the method was successfully used for the determination of trace gold in geological samples.