Determination of Silver in Silver Ore by Super Microwave Digestion and Inductively Coupled Plasma Emission Spectrometry
The difference between different digestion and determination methods of silver in silver ore was studied in detail,and a simple,fast,cost-effective and reliable method was selected.The digestion procedure mainly studied three systems:hydrochloric acid-nitric acid-electric hot platedigestion,hydrofluoric acid-nitric acid-hydrofluoric acid-perchloric acid-electric hot platedigestion,and nitric acid-hydrochloric acid-hydrofluoric acid-hydrogen peroxide-super microwave digestion.The determination methods mainly include flame atomic absorption spectrometry,inductively coupled plasma emission spectrometry and inductively coupled plasma mass spectrometry.By comparison,it was found that(nitric acid-hydrochloric acid-hydrofluoric acid-hydrogen peroxide)ultramicrowave digestion-inductively coupled plasma emission spectrometry can achieve low detection limit,fast detection speed,high accuracy,good precision,wide linear range,and simultaneous determination of multiple elements.The results are satisfactory,which isworthy of research and application.
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