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- Title
Direct Determination of Gold in Geological Samples by Inductively Coupled Plasma Mass Spectrometry with Aqua Regia Sampling Preparation.
- Authors
MA Jingzhi; LI Ce; ZHANG Mingjie; XIONG Yuxiang
- Abstract
Weighed 10.00 g samples and put in muffle furnace at 700 °C for one hour, then added about 60 mL aqua regia,covered the surface dish and dissolved in the low temperature electric heating plate (1 000 W)for 40 minutes, added 5 mL gelatin (20 g/L), after mixing, adding equal volume of water, draining and filtrating, the filtrate was dissolved to 500 mL. A rapid method for the determination of gold in geological samples by aqua regia-inductively coupled plasma mass spectrometry (ICP-MS) was developed using Rh of 10 ng/mL as internal standard. This method is suitable for the analysis of 0.1-10 µg/g grade ore samples. The certified reference material of GBW07209, GBW07808, GBW07809, GBW07300 were repeatedly tested. The relative standard deviation (RSD, n= 12) was less than 5% and relative error (RE) is less than 2%. This method has the advantages of simplicity and rapidity, and has obtained satisfactory results in practical application.
- Publication
Chinese Journal of Inorganic Analytical Chemistry / Zhongguo Wuji Fenxi Huaxue, 2020, Vol 10, Issue 2, p48
- ISSN
2095-1035
- Publication type
Article
- DOI
10.3969/j.issn.2095-1035.2020.02.010