Determination of harmful element silver in waste water by Inductively coupled plasma mass spectrometry (ICP-MS)
Received:February 20, 2020  Revised:February 25, 2020
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DOI:doi:10.3969/j.issn.2095-1035.2020.06.004
KeyWord:Graphite electrothermal plate digestion;Inductively coupled plasma mass spectrometry; Waste Water; Silver
        
AuthorInstitution
Huang Huimim 湖南省长沙生态环境监测中心
Hu Fang 湖南省长沙生态环境监测中心
Hou Yulan 湖南省长沙生态环境监测中心
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Abstract:
      In order to find a more suitable method for the determination of low-content silver in waste water, graphite electrothermal plate digestion-inductively coupled plasma mass spectrometry was used to determine low-content silver ions in waste water. The utility of the method was evaluated by optimizing the working conditions of the instrument, determining the linear regression equation, detection limit, accuracy, precision ,recovery of the actual sample and comparing the results with the real sample determination results of the inductively coupled plasma method(ICP-AES).The pretreatment method of graphite electrothermal plate digestion-inductively coupled plasma mass spectrometry is simple, the analysis speed is fast and the detection limit is low, is 0.03 ug/L, the relative error of standard sample determination is-0.7% ~ 1.7% , the relative standard deviation is 1.1% ~ 2.5% , the recovery of standard-added sample is between 97.0% ~ 103% , and the recovery is high enough for the determination of low-content silver in waste water.
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