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黄金科学技术 ›› 2017, Vol. 25 ›› Issue (6): 108-113.doi: 10.11872/j.issn.1005-2518.2017.06.108

• 采选技术与矿山管理 • 上一篇    下一篇

火试金富集—电感耦合等离子体发射光谱法测定载金炭中金和银

单召勇,周发军,朱宗波,殷晓斌   

  1. 山东黄金冶炼有限公司,山东  莱州   261441
  • 收稿日期:2017-01-15 修回日期:2017-06-23 出版日期:2017-12-30 发布日期:2018-05-18
  • 作者简介:单召勇(1987-),男,山东泗水人,助理工程师,从事黄金选冶分析工作。shanshaoyong@yeah.net

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

摘要:

经硝石法配料后,采用火试金富集—电感耦合等离子体发射光谱法测定了载金炭中金和银。经过方法条件实验,确定了称样量、酸用量等最佳实验条件,进行了金银测定的干扰实验。该方法测定金的相对标准偏差为0.46%~0.99%,加标回收率为99.2%~101.3%;测定银的相对标准偏差为0.63%~1.77%,加标回收率为99.5%~101.5%。对比分析结果表明,该方法测定结果分别与经典火试金法测定金量和火焰原子吸收法测定银量的结果完全符合,具有快速、灵敏、可实现金银联测和测定结果稳定的优点,减少了样品焙烧步骤,大大缩短了分析时间,对于大批量载金炭样品的分析,能够节省人工成本并提高分析效率。

关键词: 载金炭, 火试金, 硝石法, 电感耦合等离子体发射光谱法, 金, 银, 焙烧

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

中图分类号: 

  • O652

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