湿法分离-火焰原子吸收光谱法测定杂铜中的金

摘要

为解决湿法溶解处理测定杂铜中金的基体干扰,采用硝酸湿法分离基体铜,再用王水溶解金.在5％的盐酸介质中,在设定的仪器工作条件下,用火焰原子吸收光谱法测定杂铜中的金.方法相对标准偏差为0.5％,该法简单快速、准确可靠.%To eliminate the matrix copper interference in determination of gold, nitric acid was used to dissolve copper from composition brass, and gold was dissolved by aqua regia. Gold content was determined by flame atomic absorption spectrometry (FAAS) in media of 5% hydrochloric acid. The method is simple, fast and accurate with relative standard deviation (RSD) 0.5%.