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Method for analyzing trace metal impurities in ultra-pure resin material and application of method

A resin material and trace metal technology, which is applied in the field of analysis and detection, can solve the problems of inability to apply ultra-pure resin trace metal detection requirements and low accuracy, achieve good detection accuracy, improve accuracy, and reduce environmental pollution. Effect

Pending Publication Date: 2022-07-19
上海赛夫特半导体材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are few reports on the analysis and detection methods of trace metal impurities in resins, and the accuracy of the detection and analysis methods for trace metal impurities in resins in the prior art is not high, so it cannot be applied to ultrapure resins for trace metal detection. Require

Method used

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  • Method for analyzing trace metal impurities in ultra-pure resin material and application of method
  • Method for analyzing trace metal impurities in ultra-pure resin material and application of method
  • Method for analyzing trace metal impurities in ultra-pure resin material and application of method

Examples

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Embodiment 1

[0052] Embodiment 1 A first aspect provides a method for analyzing trace metal impurities in a polyethylene ultrapure resin material, the step comprising the following steps: (1) shearing different positions inside the ultrapure polyethylene resin material in a laminar flow hood; Take a sample with a size of 1mm*10mm and a total mass of 2g; (2) Combine boron, sodium, magnesium, aluminum, phosphorus, potassium, calcium, chromium, manganese, iron, nickel, copper, zinc, arsenic, lead elements Standard storage solution (concentration is 1mg / mL), diluted and mixed step by step to prepare 50mL mixed element standard solution, the concentration of each element in mixed element standard solution is 100μg / L; (3) in 6 clean 100mL volumetric flasks , add 0mL, 0.5mL, 1.0mL, 2.0mL, 4.0mL, 8.0mL mixed element standard solutions respectively, and use 2% (V:V) nitric acid to dilute to volume; 6 volumetric flasks in the standard series of working solutions of each element in the solution Conce...

Embodiment 2

[0062] The specific implementation of this example is the same as that of Example 1, except that the volume ratio of nitric acid, hydrochloric acid, sulfuric acid and ultrapure water is 1:0.5:0.8:19.

Embodiment 3

[0064] The specific implementation of this embodiment is the same as that of Embodiment 1, except that the ashing temperature is 550°C.

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Abstract

The invention discloses a method for analyzing trace metal impurities in an ultra-pure resin material. The method comprises the following steps: (1) sampling the ultra-pure resin material in a laminar flow hood; (2) preparing a mixed element standard solution from the standard storage solution; (3) preparing a standard series working solution; (4) preparing a sample solution, and performing data determination; and (5) data analysis. The trace metal in the ultrapure resin material is effectively reserved through cooperation of the specific ashing digestion temperature, the specific ashing heating rate and the specific proportion of the dissolved acid solution, and the method has a good detection effect on trace metal impurities in the ultrapure resin material, has excellent detection accuracy and precision, is suitable for being popularized in the field of analysis and detection, and has a wide application prospect. The method has a wide development prospect.

Description

technical field [0001] The invention relates to the field of analysis and detection, in particular to an analysis method for trace metal impurities of ultrapure resin material and its application. Background technique [0002] Trace metals, also known as trace elements, refer to extremely small amounts of metal elements generally contained in water or gas with a content of less than or equal to 1 μg / mL (ppm). In recent years, the impact of trace metals on the environment has received increasing attention. Due to the non-degradability and fineness of trace metals, they generally exist in the air, and as they settle to the surface, they finally enter the circulation and enter the biosphere, ultimately threatening human health. However, with the strong supervision of air quality in recent years and the research on the detection of trace metal content in water and air, the harm of trace metals has been favorably controlled. [0003] Recently, however, methods for the analysis ...

Claims

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Application Information

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IPC IPC(8): G01N27/626G01N1/44
CPCG01N27/62G01N1/44
Inventor 鲁文锋刘翠管延鹏王忠贺韩航崔云龙杨东风刘晓霞
Owner 上海赛夫特半导体材料有限公司