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Gold Science and Technology ›› 2017, Vol. 25 ›› Issue (6): 108-113.doi: 10.11872/j.issn.1005-2518.2017.06.108

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Determination of Gold and Silver in Gold-loaded Carbon by Inductively Coupled Plasma-Atomic Emission Spectrometry with Fire Assay Preconcentration

SHAN Zhaoyong，ZHOU Fajun，ZHU Zongbo，YIN Xiaobin   

  1. Shandong Gold Smelting Co.，Ltd.,Laizhou    261441，Shandong，China
  • Received:2017-01-15 Revised:2017-06-23 Online:2017-12-30 Published:2018-05-18

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Abstract:

A method of inductively coupled plasma-atomic emission spectrometry with fire assay preconcentration is was used in determining gold and silver in gold-loaded carbon by saltpeter ingredients.Through method designation and condition testing，the best determination conditions for sample weight and acid dosage were settled.The relative standard deviation of this method is 0.46%~0.99% for gold and 0.63%~1.77% for silver，and the recovery ratio is between 99.2%~101.3% for gold and 99.5%~101.5% for silver when reference materials were added.The results of this method are consistent with the results measured by classical fire assay method for gold and flame atomic absorption spectrometry method for silver.The method has the advantages of being quick and sensitive，achieving the gold-silver determination together and with the stability determination result.It also reduces the sample roasting step and the analysis time，saves labor costs and improves the efficiency for the analysis of large quantities of gold-loaded carbon samples.

Key words: gold-loaded carbon, fire assay, saltpeter ingredients, ICP-AES, gold, silver, roasting

CLC Number: 

  • O652

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