测定痕量金对地质、冶金、化工部门都有重要的现实意义。目前,石墨炉原子吸收法一般需预先以萃取、共沉淀、离子交换、反相色层手段分离富集。虽然绝对灵敏度很高,但由于进样体积小,其相对灵敏度受到一定限制,而且分离操作烦琐,使用较多化学试剂,易引入较大误差。本方法使金电沉积到钨丝上,然后以电热法进行原子吸收测定。虽然Newton较系统地介绍过电解电热原子吸收法测定痕量金属的资料,但尚未见到有关测定金的具体报导。本 Determination of trace gold on the geological, metallurgical, chemical sector has an important practical significance. At present, graphite furnace atomic absorption method generally requires pre-extraction, coprecipitation, ion exchange, reversed-phase chromatography separation and enrichment. Although the absolute sensitivity is very high, the relative sensitivity of the injection volume is limited due to the small injection volume. Moreover, the separation operation is cumbersome and the use of more chemical reagents tends to introduce larger errors. The method deposits gold on tungsten wire and then performs atomic absorption spectrometry by the electrothermal method. Although Newton systematically presents the data for the determination of trace metals by EELA, no specific report on the determination of gold has been made. this