铁盐增敏-石墨炉原子吸收法测定岩石样品中超痕量金

Determination of Ultra Trace Gold in Rock Samples by Graphite Furnace Atomic Absorption Spectrometry with Molysite Increasing Sensitivity

中文关键词:  金,铁盐,石墨炉原子吸收法

英文关键词:gold,molysite,GFAAS

中文摘要:

      在解脱测定液中引入三价铁盐，并在其增敏下，使用石墨炉原子吸收法测定岩石样品中的超痕量金.方法检出限为0.02 ng/g,精密度（RSD,n=12）为5%~8%.方法准确可靠. 进行国家一级标样物质的测试，结果符合质量要求，与标准值吻合.

英文摘要:

      Molysite is introduced into releasing agent and with the increasing sensitivity of molysite , a method for determination of ultra trace gold in rock samples by graphite furnace atomic absorption spectrometry is introduced . Detction limit of the method is 0.02 ng/g with precision of 5%~8% RSD n=12 . The method is accurate and reliable . Through the test of first grade national standard reference materials, the result meets the quality demand and is in agreement with certified values .