Method for measuring high content lead in iron-containing dust and mud

A determination method and high-content technology, applied in the field of analytical chemistry, can solve problems such as lead-free analysis methods, and achieve the effects of simple operation, high precision, and short measurement time
CN102914533AInactive Publication Date: 2013-02-06INNER MONGOLIA BAOTOU STEEL UNION
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
INNER MONGOLIA BAOTOU STEEL UNION
Publication Date
2013-02-06
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a method for measuring high content lead in iron-containing dust and mud and belongs to the technical field of analytical chemistry. The method comprises the following steps of: heating and decomposing a sample in a polytetrafluoroethylene beaker at a low temperature by using hydrochloric acid, nitric acid and hydrofluoric acid until perchloric acid is fuming; slightly cooling, adding dilute nitric acid dissolving salt, supplementing hydrochloric acid when insoluble substances are present, fixing the volume to a specified volume, and measuring the lead content by employing an inductive coupling plasma atomic emission spectrometer under the optimized instrument conditions. The method has the advantages of short measurement time, easy and convenient operation and high precision and accuracy and is particularly suitable for routine analysis of lots of samples.
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Description

1. Technical field

[0001] The invention belongs to the technical field of analytical chemistry and relates to a method for determining high-content lead in iron-containing dust. 2. Background technology

[0002] With the extensive use of iron-containing dust and sludge in sintering and blast furnace ironmaking, the behavior of its harmful component lead in the pellet production process, sintering process and blast furnace ironmaking process has attracted the attention of smelting experts. Therefore, its harmful The exact content of lead has become the focus of the smelting process. Currently, there is no analytical method for the determination of high levels of lead in iron-bearing dust. 3. Contents of the invention

[0003] The purpose of the present invention is to disclose a method for determining high-content lead in iron-containing dust and mud, and the method can accurately measure the content of lead in iron-containing dust and mud.

[0004] First, through experim...

Claims

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