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Plastic reference material and manufacturing method thereof

A standard material and plastic technology, applied in the field of standard material, can solve problems such as stamping and complicated operation, and achieve the effect of small deviation

Inactive Publication Date: 2018-10-09
HITACHI HIGH TECH SCI CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] However, in the case of the technology described in Patent Document 1, there is a problem that the particles (mass) of each standard substance are small compared with the amount of sample required for introduction into the analysis device, so Complicated when multiple particles must be weighed for analysis
[0011] In addition, also in the case of the technique described in Patent Document 2, there is a problem that a punching operation is required for analysis

Method used

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  • Plastic reference material and manufacturing method thereof
  • Plastic reference material and manufacturing method thereof
  • Plastic reference material and manufacturing method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0072] (complex formation)

[0073] A composite was formed using acrylonitrile-butadiene-styrene copolymer resin (ABS resin) as a plastic substrate and using diisobutyl phthalate (DIBP) as a chemical substance. First, put about 1.5 kg of ABS resin pellets into a plastic bag, add about 1.6 g of DIBP and mix them, then knead the compound in an extrusion kneader, and then use the extrusion kneader to knead the compound. The composite was extruded into a water tank, cooled, and cut into pieces of predetermined size (about 3 mm in diameter and about 3 mm in length) by cutting.

[0074] The process of introducing the obtained chips into the extrusion kneader again and kneading them to form the same chips was repeated three times. In addition, since the initial compound extruded from the extrusion kneader may not be sufficiently mixed, it is discarded. The final fragment-like composite obtained was about 1 kg.

[0075] (granulation)

[0076] Import the resulting fragmented comple...

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Abstract

The present invention provides a plastic reference material and a manufacturing method thereof. The plastic reference material made by dispersing at least one chemical substance in a plastic substrate, and used for analyzing a concentration of the chemical substance (4), wherein the plastic reference material (10) is of a granular shape and includes an average value (Wav) for each maximum diameterof fifty or more of the plastic reference materials being within a range of 0.1 mm to 1.0 mm, and a largest difference (Wv) between the maximum diameters (Dmax) and the average value (Wav) being equal to or less than 0.2 mm, and an average value of each weight (W) of equal to or more than fifty plastic reference materials being within a range of 0.1 mg to 0.5 mg, and a largest difference (Wv) between the weights (W) and the average value (Wav) being equal to or less than 0.1 mg.

Description

technical field [0001] The present invention relates to a standard substance used when analyzing chemical substances contained in a sample and a method for producing the same. Background technique [0002] Methods for analyzing chemical substances contained in a sample are roughly divided into absolute analysis methods that do not require standard substances, and relative analysis methods that quantify by comparison with standard substances. As a standard substance used in the relative analysis method, a pure substance of the component to be analyzed may be used. However, in order to reduce analysis errors caused by properties of the sample, it is often desirable to use a standard substance having the same composition as the analysis sample. [0003] Therefore, various reference materials for analysis have been developed and marketed. Among them, the standard substances commercially available as plastic standard substances include those in the form of chips with a particle ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/06G01N30/02
CPCG01N30/02G01N30/06C08J3/12C08J3/203C08J2355/02G01N1/286G01N2001/2873G01N2030/042B29B9/12G01N30/04G01N2030/025
Inventor 平野义博並木健二坂井范昭秋山秀之
Owner HITACHI HIGH TECH SCI CORP
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