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Method for measuring contents of Fe, Al, Ca, Mg, Pb, Cu, Zn and P in manganese ore

A determination method and technology for phosphorus content, applied in the field of analysis and testing, can solve the problems of cumbersome operation, increased salt content, easy to block the torch, etc., and achieve the effects of convenient operation, good stability and reliable method

Inactive Publication Date: 2012-10-17
WUKUN STEEL
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  • Application Information

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Problems solved by technology

Because this method adopts alkali fusion and then acidification, the operation is cumbersome, and the salt content in the solution increases, which is easy to block the torch, and only high-salt-resistant atomizers and corresponding spray chambers can be used, thereby limiting the application of this method
Therefore, there is no effective inductively coupled plasma atomic emission spectrometry to determine the content of iron, aluminum, calcium, magnesium, lead, copper, zinc and phosphorus in manganese ore.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment １

[0016] Prepare the following standard solutions as usual:

[0017] 1. Preparation of iron standard solution:

[0018] 1A, according to the amount of 60mL / g high-purity iron, put commercially available 0.5000g high-purity iron into 30mL dilute hydrochloric acid, the dilute hydrochloric acid has the following volume ratio: HCl:H 2 O=1:1, heat at 100°C until high-purity iron dissolves, add 10 drops of commercially available analytical pure nitric acid for oxidation, boil at 100°C to drive out nitrogen oxides, rinse the cup wall with water, and cool the solution to room temperature , add water to dilute to a solution concentration of 500 μg / mL to obtain an iron standard solution;

[0019] 1B. Pipette 100.00 mL of the iron standard solution prepared in step 1A into a 500 mL volumetric flask, dilute to the mark with water, and shake well. This solution contains 100 μg / mL of iron;

[0020] 2. Preparation of aluminum standard solution:

[0021] 2A. According to the amount of 60 mL / ...

Embodiment 2

[0056] Determination of iron, aluminum, calcium, magnesium, lead, copper, zinc and phosphorus in manganese ore to be tested:

[0057] 1. Preparation of manganese ore sample solution to be tested:

[0058] 1A. According to the amount of 20 drops / g sample, add 4 drops of water to the 0.2000g manganese ore sample to wet the sample, and add 20 mL of commercial analytical pure hydrochloric acid to the manganese ore sample according to the amount of 100mL / g sample, Add 2 mL of commercially available analytically pure nitric acid to the manganese ore sample at an amount of 10 mL / g sample, heat and dissolve the manganese ore sample at 100 °C until the brown smoke disappears, drive away the nitrogen oxides, and cool to obtain Dissolving solution 5 mL;

[0059] 1B. Add 5 mL of commercially available analytically pure hydrofluoric acid in an amount of 1 mL / mL to the 5 mL of solution in step 1A, and add 5 mL of commercially available analytically pure perchloric acid in an amount of 1 mL...

Embodiment 3

[0066] Determination of iron, aluminum, calcium, magnesium, lead, copper, zinc and phosphorus in manganese ore to be tested:

[0067] 1. Preparation of manganese ore sample solution to be tested:

[0068] 1A. According to the amount of 30 drops / g sample, add 6 drops of water to the 0.2000g manganese ore sample to wet the sample, and add 30 mL of commercial analytical pure hydrochloric acid to the manganese ore sample according to the amount of 150mL / g sample, Add 4 mL of commercially available analytically pure nitric acid to the manganese ore sample at an amount of 20 mL / g sample, heat and dissolve the manganese ore sample at 150 °C until the brown smoke disappears, drive away the nitrogen oxides, and cool to obtain Dissolving solution 7 mL;

[0069] 1B. Add 10.5 mL of commercially available analytically pure hydrofluoric acid at 1.5 mL / mL to the 7 mL of solution in step 1A, and add commercially available analytically pure perchloric acid at 1.5 mL / mL of solution 10.5 mL, a...

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Abstract

The invention provides a method for measuring contents of Fe, Al, Ca, Mg, Pb, Cu, Zn and P in manganese ore, which comprises the steps of: adding hydrochloric acid, nitric acid, hydrofluoric acid and perchloric acid into the sample; heating and dissolving the sample; then, adding sodium nitrite for reducing; adding diluted hydrochloric acid and boiling; adding water for diluting the solution; and finally, obtaining a sample liquid to be measured. The conventional inductively coupled plasma atomic emission spectrometry is used for measuring the spectral line intensity of the sample liquid to be measured, and the corresponding content values of Fe, Al, Ca, Mg, Pb, Cu, Zn and P can be obtained in the standard working curve of Fe, Al, Ca, Mg, Pb, Cu, Zn and P according to the spectral line intensity. The method not only is simple in operation, but also is high in accuracy rate on contents of Fe, Al, Ca, Mg, Pb, Cu, Zn and P; and the measurement result is good in stability, repeatability and accuracy, thus completely meeting the demand of measuring the contents of Fe, Al, Ca, Mg, Pb, Cu, Zn and P in manganese ore in the daily life.

Description

[0001] technical field [0002] The invention relates to a method for determining the content of iron, aluminum, calcium, magnesium, lead, copper, zinc and phosphorus in manganese ore, belonging to the technical field of analysis and testing. Background technique [0003] The determination of iron, aluminum, calcium, magnesium, lead, copper, zinc and phosphorus content in manganese ore, the current national standard GB / T24197-2009, is completed by inductively coupled plasma atomic emission spectrometry, specifically, the sample and the process Sodium oxide was put into a zirconium crucible, melted together in a muffle furnace, then leached with hydrochloric acid, and fixed to a sample solution, and then the metal elements in the sample were determined by inductively coupled plasma atomic emission spectrometry non-metallic elements. Because this method adopts alkali fusion and then acidification, the operation is cumbersome, and the salt content in the solution increases, wh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/28
Inventor 陶俊李玉清
Owner WUKUN STEEL
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