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GB/T 28020-2011 English PDF (GBT28020-2011)

GB/T 28020-2011 English PDF (GBT28020-2011)

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GB/T 28020-2011: Adornment -- Determination of baneful elements -- X-ray fluorescence spectrometric method

This standard specifies the X-ray fluorescence spectrometric detection method of baneful elements in adornment. This standard applies to the detection of baneful elements in the surface layer of the adornment made in various materials (except jewelry and jade).
GB/T 28020-2011
GB
NATIONAL STANDARD OF THE
PEOPLE REPUBLIC OF CHINA
ICS 39.060
Y 88
Adornment - Determination of Baneful Elements -
X-ray Fluorescence Spectrometric Method
ISSUED ON. OCTOBER 31, 2011
IMPLEMENTED ON. FEBRUARY 1, 2012
Issued by. General Administration of Quality Supervision, Inspection and Quarantine of the PEOPLE Republic of China
Standardization Administration of the PEOPLE Republic of
China.
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative References ... 4
3 Principle and Method ... 4
4 Instruments and Apparatus ... 5
5 Test Methods and Requirements ... 5
6 Factors Affecting the Testing Results ... 5
7 Determination of Results ... 6
Adornment - Determination of Baneful Elements -
X-ray Fluorescence Spectrometric Method
1 Scope
This standard specifies the X-ray fluorescence spectrometric detection method of baneful elements in adornment.
This standard applies to the detection of baneful elements in the surface layer of the adornment made in various materials (except jewelry and jade).
2 Normative References
The following documents are essential to the application of this document. For the dated documents, only the versions with the dates indicated are applicable to this document; for the undated documents, only the latest version (including all the amendments) are applicable to this standard.
GB 28480 Adornment - Provision for Limit of Baneful Elements
GB/T 28019 Adornment - Determination of Chromium (VI) ?€? 1,5-
Diphenylcarbohydrazide spectrophotometric method
GB/T 28021 Adornment - Determination of baneful elements - Method of
spectrometry
3 Principle and Method
Principle of this method is as follows. surface layer of adornment can be excited by X- ray; it can emit characteristic X-ray. Energy of characteristic X-ray corresponds to each specific element. Content of the elements in adornment can directly determine the intensity of spectral line. By measuring the energy or wavelength of the X-ray, it can perform the qualitative analysis; By measuring the intensity of the spectral line, it can perform the quantitative analysis.

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