Method for synchronously detecting copper, bismuth, iron, lead, tellurium, selenium, antimony and palladium in electrolytic silver through ICP-AES (Inductively Coupled Plasma-Atomic Emission Spectrometry)

Abstract

The invention relates to a method for synchronously detecting copper, bismuth, iron, lead, tellurium, selenium, antimony and palladium in electrolytic silver through ICP-AES (Inductively Coupled Plasma-Atomic Emission Spectrometry). The method is characterized in that the method for synchronously detecting copper, bismuth, iron, lead, tellurium, selenium, antimony and palladium in electrolytic silver by the ICP-AES is adopted. The method comprises the following main steps: sampling 5.0000g of electrolytic silver; decomposing the sample with proper amount of superior pure nitric acid; precipitating through proper amount of hydrochloric acid to obtain silver; filtering to obtain analytic solution to be detected; detecting the contents of eight impurity elements in the analytic solution to be detected by an ICP-AES spectrograph under a certain instrument working parameter conditions. Compared with the national standard GB / T11067 Silver Chemical Analysis Method, the method has the advantages that the detecting matrix is small in interference, weight impurity elements of copper, bismuth, iron, lead, tellurium, selenium, antimony and palladium can be quickly and synchronously detected, the detecting needs a short time, and thus the demand on quick analyzing of the electrolytic silver can be met.

Description

technical field [0001] The invention relates to the field of element analysis, in particular to the simultaneous determination of eight metal impurity elements of copper, bismuth, iron, lead, tellurium, selenium, antimony and palladium by using ICP-AES inductively coupled plasma atomic emission spectroscopy. Background technique [0002] Electrolytic silver is metallic silver obtained by reducing silver ions on the cathode through electrolytic reaction. The main element is silver, and contains traces of copper, bismuth, iron, lead, tellurium, selenium, antimony, palladium and other impurity elements. [0003] The traditional analysis standard for electrolytic silver is the national standard GB / T11067 "Silver Chemical Analysis Method". Two kinds of equipment (flame atomic absorption spectrophotometer and inductively coupled plasma atomic emission spectrometer) are used for analysis and detection. The sample amount is about 70g, and the analysis and test time is about 6 -8 ho...

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Problems solved by technology

[0003] The traditional analysis standard for electrolytic silver is the national standard GB / T11067 "Silver Chemical Analysis Method". Two kinds of equipment (flame atomic absorption spectrophotometer and inductively coupled plasma atomic emission spectrometer) are used for analysis and detection. The sample amount is about 70g, and the analysis and test time is about 6 -8 hours, the method has long operation process, large sample consumption, many kinds of reagents, high detection limit, narrow linear range, and cannot simultaneously determine all elements

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