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Method of utilizing ICP-AES to measure content of tungsten in ferromolybdenum

An ICP-AES, tungsten content technology, applied in the field of analysis and testing, can solve the problems of high detection limit, long measurement cycle, low accuracy and precision, etc., and achieve high measurement precision, fast measurement time, and lower measurement limit. low effect

Inactive Publication Date: 2017-05-31
JINDUICHENG MOLYBDENUM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Most of the methods for the determination of impurity elements in ferromolybdenum need to separate the molybdenum matrix, or use masking and other means to eliminate the interference of molybdenum, and traditional chemical analysis methods such as titration, volumetric and spectrophotometric methods are often used. The spectrophotometric method is accurate. The accuracy and precision are low, the measurement results are unstable, the detection limit of the measurement is high, and the measurement period is long, which is not friendly to the environment; while the measurement process of the spectroscopic method is complicated, the measurement cost is high, the measurement range is narrow, and the measurement process is difficult to master and control, these two methods are not suitable for the requirements of rapid determination in industrial production

Method used

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  • Method of utilizing ICP-AES to measure content of tungsten in ferromolybdenum
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  • Method of utilizing ICP-AES to measure content of tungsten in ferromolybdenum

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Embodiment 1

[0036] The method that the present embodiment uses ICP-AES to measure the content of tungsten in ferromolybdenum comprises the following steps:

[0037] Step 1. Weigh the ferromolybdenum sample:

[0038] Weigh two 0.2000g ferromolybdenum samples, and the weighing value is accurate to 0.0001g;

[0039] Step 2: Prepare ferromolybdenum sample solution and ferromolybdenum sample blank solution:

[0040] Take two 100mL beakers, put the 0.2000g ferro-molybdenum sample weighed in step 1 into one of the beakers, and put the ferro-molybdenum sample weighed in step 1 into the other beaker, and then add the ferro-molybdenum sample weighed in step 1 to the two beakers respectively. 10mL of nitric acid solution, cover with a watch glass, heat the nitric acid solution in the two beakers to 150°C until the ferromolybdenum sample is dissolved, then add 1mL of hydrochloric acid solution to the two beakers respectively, and then remove the two beakers after they are completely dissolved. The ...

Embodiment 2

[0063] The method that the present embodiment uses ICP-AES to measure the content of tungsten in ferromolybdenum comprises the following steps:

[0064] Step 1. Weigh the ferromolybdenum sample:

[0065] Weigh two 0.2500g ferromolybdenum samples, the weighing value is accurate to 0.0001g;

[0066] Step 2: Prepare ferromolybdenum sample solution and ferromolybdenum sample blank solution:

[0067] Take two 150mL beakers, put the 0.2500g ferro-molybdenum sample weighed in step 1 into one of the beakers, and leave the ferro-molybdenum sample weighed in step 1 in the other beaker, and then add the ferro-molybdenum sample weighed in step 1 to the two beakers respectively. 15mL of nitric acid solution, cover with a watch glass, heat the nitric acid solution in the two beakers to 150 ℃ until the ferromolybdenum sample is dissolved, then add 3mL of hydrochloric acid solution to the two beakers respectively, and then remove the two beakers after they are completely dissolved. The beak...

Embodiment 3

[0091] The method that the present embodiment uses ICP-AES to measure the content of tungsten in ferromolybdenum comprises the following steps:

[0092] Step 1. Weigh the ferromolybdenum sample:

[0093] Weigh two 0.5000g ferromolybdenum samples, the weighing value is accurate to 0.0001g;

[0094] Step 2: Prepare ferromolybdenum sample solution and ferromolybdenum sample blank solution:

[0095] Take two 200mL beakers, put the 0.5000g ferro-molybdenum sample weighed in step 1 in one of the beakers, and put the ferro-molybdenum sample weighed in step 1 in the other beaker, and then add the ferro-molybdenum sample weighed in step 1 to the two beakers respectively. 20mL of nitric acid solution, cover with a watch glass, heat the nitric acid solution in the two beakers to 150 ℃ until the ferromolybdenum sample is dissolved, then add 5mL of hydrochloric acid solution to the two beakers respectively, and then remove the two beakers after they are completely dissolved. The beakers ...

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Abstract

The invention discloses a method of utilizing ICP-AES to measure the content of tungsten in ferromolybdenum. The method comprises the following steps: step one, weighing a ferromolybdenum sample; step two, preparing a ferromolybdenum sample solution and a ferromolybdenum sample blank solution; step three, preparing work curve solutions; step four, adopting inductive coupling plasma emission spectrograph (ICP-AES) to measure the intensities of the work curve solutions, and drawing a work curve by taking the concentrations of the work curve solutions as the horizontal coordinate and the intensities of the work curve solutions as the vertical coordinate; step five, drawing a work curve; step six, measuring the content of tungsten in the ferromolybdenum sample solution; and step seven, calculating the content of tungsten in the ferromolybdenum sample. The provided measurement method has the advantages of little using amount of ferromolybdenum sample, high reliability and precision, quick measuring speed, simpleness, accuracy, high sensitivity, and good stability.

Description

technical field [0001] The invention belongs to the technical field of analysis and testing, and in particular relates to a method for determining the content of tungsten in ferromolybdenum by using ICP-AES. Background technique [0002] Ferromolybdenum is an alloy of molybdenum and iron, generally containing 50 to 60% of molybdenum, and is used as an alloy additive in steelmaking. Ferromolybdenum, an amorphous metal additive in the production process, has several excellent properties that are transferred to new alloys. One of the main benefits of ferromolybdenum alloy is its hardening properties, which makes the steel extremely weldable. Ferromolybdenum is one of the high melting point metals. In addition, adding alloys to ferromolybdenum can improve corrosion resistance. The characteristics of ferromolybdenum make it an additional protective film on other metals, which is suitable for various products. Ferromolybdenum is also a statutory inspection commodity. [0003] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/73
CPCG01N21/73
Inventor 谢明明雷锐刘延波杨红忠蔺佰潮
Owner JINDUICHENG MOLYBDENUM CO LTD
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