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J4 ›› 2011, Vol. 19 ›› Issue (4): 65-67.

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Study on the Detection Limit of Determination of Trace Gold by Z -5000 Graphite Furnace Atomic Absorption Spectrometry

AI Xiaojun，NIE Fenglian，CHEN Xue，CHEN Zhansheng   

  1. Gold Geological Institute of CAPF，Langfang 065000，Hebei，China
  • Received:2010-09-15 Revised:2011-07-19 Online:2011-08-31 Published:2012-05-10

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Abstract:

We discuss the process of detection limit and how to choose the reagent blank and improve the detection limit by taking determination of trace gold using foam separation enrichment-Graphite Furnace Atomic Absorption as an example. The results show that the detection limit calculated from reagent blank can only represent the instrument detection, but real blank can reflect the true method detection limit which is used in this study, and the detection limit of trace gold determination by Foam Separation Enrichment-Graphite Furnace Atomic Absorption can be effectively improved by adding ascorbic acid or increasing the injection.

Key words: Graphite Furnace Atomic Absorption, Determination of trace gold, Detection limit, Reagent blank

CLC Number: 

  • TF831

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