Method for measuring contents of lanthanum, cerium and yttrium elements in multi-component nodulizing agent by applying ICP-AES method

An ICP-AES, multi-component composite technology, applied in the direction of material excitation analysis, thermal excitation analysis, etc., can solve the problem of no relevant literature reports, and achieve the effect of filling the detection gap, ensuring the quality of castings, and simple processing.

Inactive Publication Date: 2015-12-16
KOCEL GROUP
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And the application of ICP-AES method to measure the content of lanthanum, cerium a

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  • Method for measuring contents of lanthanum, cerium and yttrium elements in multi-component nodulizing agent by applying ICP-AES method
  • Method for measuring contents of lanthanum, cerium and yttrium elements in multi-component nodulizing agent by applying ICP-AES method
  • Method for measuring contents of lanthanum, cerium and yttrium elements in multi-component nodulizing agent by applying ICP-AES method

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[0015] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail in conjunction with the actual situation.

[0016] A kind of ICP-AES method of the present invention measures the method for lanthanum, cerium and yttrium element content in multi-element composite nodulizer, comprises the following steps:

[0017] Step 1: Weigh 0.5000g sample into a 200mL polytetrafluoroethylene beaker, moisten it with a small amount of water, add 10mL nitric acid, carefully drop 5-8mL hydrofluoric acid with a plastic tube, until the violent reaction stops, add 8mL perchloric acid acid, heat at low temperature until perchloric acid fumes are emitted, rinse the wall of the cup with water, and continue to heat at low temperature until fumes are emitted until 2mL to 3mL of solution remains. Cool slightly, add 25mL hydrochloric acid (1:3), heat to dissolve the salts, and cool to room te...

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Abstract

The invention belongs to the field of analysis of element content and relates to a method for contents of lanthanum, cerium and yttrium elements in a multi-component nodulizing agent by applying an ICP-AES method, which has the characteristics of accuracy, rapidness, convenient operation and the like, and is suitable for production and detection. The technical scheme provided by the invention has the beneficial effects that according to the method for the contents of lanthanum, cerium and yttrium elements in a multi-component nodulizing agent by applying the ICP-AES method, few technical flows are needed, the detection period is greatly shortened, and meanwhile, the detection blank is filled; the microelements in the nodulizing agent are measured by applying the ICP-AES method, the detection range is enlarged, and a new detection method is explored, thus providing analysis basis is provided for the problems such as product defects; the content ranges of the lanthanum, cerium and yttrium elements are measured to be 0.0001%-4.00% by applying the method, the analysis result is accurate, and the recovery rate is 97.2%-99.7%; due to the application of the ICP-AES method, the analysis result is accurate, the analysis requirements on the contents of lanthanum, cerium and yttrium can be met, and the casting quality can be guaranteed.

Description

technical field [0001] The invention belongs to the field of element content analysis, and specifically relates to a method for measuring the content of lanthanum, cerium and yttrium elements in a multi-component composite nodulizer by inductively coupled plasma atomic emission spectrometry (ICP-AES). Background technique [0002] Nodularization and inoculation treatment technology is the key technology for the production of large ductile iron castings. The high-efficiency multi-component composite nodularizer has the functions of purifying molten iron, nodularization, anti-spheroidization recession, strong resistance to graphite distortion, small whitening tendency, and refined matrix structure , wide application range and so on. Among them, Ce, La and Y can promote the spheroidization of graphite, generate or increase graphite spheroids, and are effective spheroidizing elements. Therefore, the determination of the element content of the nodulizer plays an important role i...

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Application Information

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IPC IPC(8): G01N21/71
Inventor 赵永莉杨海娇陈蓉张敏
Owner KOCEL GROUP
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