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GB/T 28020-2011 PDF in English


GB/T 28020-2011 (GB/T28020-2011, GBT 28020-2011, GBT28020-2011)
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GB/T 28020-2011English70 Add to Cart 0-9 seconds. Auto-delivery. Adornment -- Determination of baneful elements -- X-ray fluorescence spectrometric method Valid
Standards related to (historical): GB/T 28020-2011
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GB/T 28020-2011: PDF in English (GBT 28020-2011)

GB/T 28020-2011 GB NATIONAL STANDARD OF THE PEOPLE’S 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’s Republic of China Standardization Administration of the People’s 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. ......
 
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.