img

QQ群聊

img

官方微信

高级检索

J4 ›› 2012, Vol. 20 ›› Issue (2): 74-78.

• 技术前沿 • 上一篇    下一篇

封闭溶样—泡塑富集火焰原子吸收法测定矿石中的金

杨明荣,牟长贤   

  1. 武警黄金第六支队,河南  三门峡   472000
  • 收稿日期:2011-12-07 修回日期:2012-02-24 出版日期:2012-04-28 发布日期:2012-08-21
  • 作者简介:杨明荣(1971-),女,河南沁阳人,高级工程师,从事岩矿样品分析测试及方法研究工作.muchangxian@163.com

Determination of  Gold in Ore Samples by Flame Atomic Absorption Spectrometry of Sealed Dissolution-foam Enrichment

YANG Mingrong,MU Changxian   

  1. No.6 Gold Geological Party of CAPF, Sanmenxia   472000,Henan,China
  • Received:2011-12-07 Revised:2012-02-24 Online:2012-04-28 Published:2012-08-21

摘要:

本次研究用王水封闭溶解试样中的金,经泡沫塑料富集后硫脲解脱,采用火焰原子吸收法测定矿石中金的含量。同时,探讨了泡塑富集酸度、富集温度、富集时间、硫脲解脱液浓度及解脱时间等因素对分析结果的影响,得出了最佳实验条件。此外,通过对比分析泡塑富集与活性炭富集、封闭溶样富集与敞口溶样富集这2对方法,得出封闭溶样—泡塑富集具有操作简便、快速、成本低、易掌握、准确度高及干扰元素少等优点。本方法的检出限为0.02 mg/L,精密度(RSD,n=6)为0.80%~4.71%,加标回收率98.57%~101.75%,金矿石测定结果与标准值相符。

关键词: 泡沫塑料, 硫脲解脱, 火焰原子吸收光谱法,

Abstract:

The determination of gold in ore samples was sealed dissolved by aqua regia and extracted by thiourea solution after foam enrichment,and then was measured by FAAS.The main influencing factors were discussed,such as the acidity of foam enrichment,temperature of enrichment,time of enrichment and the concentration of thiourea solution,time of disengagement etc.The best conditions was obtained through the experiment.The foam enrichment was compared with activated carbon enrichment,and sealed dissolution was compared with opened dissolution.The sealed dissolution-foam enrichment is convenient,fast,low-cost,easy to operate and the result is accurate,the interference element is fewer.The detection limit of this method is 0.02 mg/L,RSD is in the range of 0.80%~ 4.71% and the recovery of standard addition is 98.6%~101.8%.The method was applied to the determination of national standard reference materials and the results are in agreement with the certified values.

Key words: Foam enrichment, Sealed dissolution, Flame Atomic Absorption Spectrometry (FAAS), Gold

中图分类号: 

  • O657.31

[1] 程武元.矿石金品位分析的影响因素[J].采矿技术,2008,8(4):59-60.
[2] 赵瑞.非酸溶解泡塑吸附氢醌法测定矿石中常量金[J].新疆地质,2003,2(4):499-500.
[3] 罗付兴. 泡沫塑料富集原子吸收光谱法测定铅锌矿中的金量[J].分析试验室,2009,28(B05):249-250.
[4] 钟蓓,杨明香. 泡塑吸附原子吸收法测金探讨[J].贵州地质,2007,24(3):244-246.
[5] 何荣,于贵成.泡塑吸附火焰原子吸收法测定矿石中金[J].商品与质量:学术观察,2011,(11):324.
[6] 李亚静,吕晓琳.原子吸收法测定岩石矿物中金含量[J].吉林地质,2008,27(1):81-82.
[7] 潘克臣.原子吸收法直接测定摇床样品中的金[J].吉林地质,2011,30(2):108-110.
[8] 雷萍,蒲志,陈伟.王水分解、泡塑吸附原子吸收法测定金[J].广东化工,2011,38(6):315,317.
[9] 艾晓军,杨理勤,冯亮,等.泡沫塑料吸附—石墨炉测定痕量金方法的改进[J].黄金科学技术,2011,19(5):51-52.
[10] DZ/T0130.1-2006.地质矿产实验室测试质量管理规范[S].北京:中国标准出版社,2006.
[11] 薛光.金的分析化学[M].北京:宇航出版社,1990.

[1] 何巧玲,肖娟,汪永顺. 氯金酸钠代替氯金酸测定矿石中金含量的研究[J]. J4, 2012, 20(3): 73-75.
[2] 逯克思. 石墨炉原子吸收光谱法测定化探样品中的金[J]. J4, 2009, 17(3): 68-70.
[3] 聂凤莲, 王丽华, 张蜀冀, 陈雪, 陈占生. 金标准溶液配制的不确定度评定[J]. J4, 2009, 17(3): 56-59.
[4] 陈占生, 李玄辉, 朝银银. 原子荧光光谱法快速测定化探样品中的砷、锑、铋、汞[J]. J4, 2009, 17(2): 51-53.
[5] 刘涛, 李念占, 李君强, 刘玖芬, 谢璐. Z-2000石墨炉原子吸收光谱法测定化探样品中的痕量金[J]. J4, 2009, 17(1): 53-55.
Viewed
Full text


Abstract

Cited

  Shared   
  Discussed   
No Suggested Reading articles found!