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GB/T 34406-2017Identification of pearl powder—Near infrared spectroscopy method (English PDF)

珍珠粉鉴别方法近红外光谱法

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

October 14, 2017

Implementation date

May 1, 2018

Scope

GB/T 34406-2017 is the English-translated version of 珍珠粉鉴别方法近红外光谱法.

GB/T 34406-2017 is the Chinese standard "Identification of pearl powder—Near infrared spectroscopy method". Its scope clause reads: This standard specifies the near-infrared spectroscopy identification pearl powder terms and definitions, principles, equipment and equipment, sample selection, test analysis, mode Type evaluation and test report.

This standard applies to freshwater pearl powder qualitative identification and semi-quantitative analysis, seawater pearl powder can refer to this standard. This standard does not apply to high-temperature processing of pearl powder and arbitration test. Its clauses include terms and definitions.

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Document preview — GB/T 34406-2017

National Standard of the People's Republic of China

ICS: 11.120.10
Classification: C 10

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

1 Scope
2 Normative references
3 Terms and definitions
3.1 Pearl powder
3.2 Shell powder shelpowder
3.3 Similarity matching value
3.4 Discriminant analysis of
3.5 Calibration set
3.6 Validation set

1 Scope

This standard specifies the near-infrared spectroscopy identification pearl powder terms and definitions, principles, equipment and equipment, sample selection, test analysis, mode

Type evaluation and test report.

This standard applies to freshwater pearl powder qualitative identification and semi-quantitative analysis, seawater pearl powder can refer to this standard.

This standard does not apply to high-temperature processing of pearl powder and arbitration test.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version applies to this article

Pieces. For undated references, the latest edition (including all amendments) applies to this document.

GB/T 14666 analytical chemistry terminology

GB/T 24895 grain and oil testing near infrared analysis calibration model validation and network management and maintenance of general rules

3 Terms and definitions

GB/T 14666 and GB/T 24895 defined and the following terms and definitions apply to this document.

3.1 Pearl powder

Made from pearl-processed powdery material.

3.2 Shell powder shelpowder

By the birth of pearl pearl shell cuticle removed after the mechanical processing of the powder material.

3.3 Similarity matching value

By comparing the spectrum of the sample to be tested and the spectral information of the pearl powder spectrum in a plurality of characteristic bands, the matching of the sample to be tested with the pearl powder is obtained

The degree of comparison results.

3.4 Discriminant analysis of

MahalanobisDistance is used to calculate the distance between the sample to be tested and the center of each pearl powder and shell powder

The distance determines the type of sample to be tested.

3.5 Calibration set

A representative collection of near-infrared spectra covering the range of components of the relevant composition.

3.6 Validation set

A collection of models used to validate the accuracy and repeatability of results.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

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