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Inspection of grain and oils. Rapid determination of cadmium in rice. X-ray fluorescence spectrometry
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LS/T 6115-2016
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Basic data Standard ID | LS/T 6115-2016 (LS/T6115-2016) | Description (Translated English) | Inspection of grain and oils. Rapid determination of cadmium in rice. X-ray fluorescence spectrometry | Sector / Industry | Food & Beverage Industry Standard (Recommended) | Classification of Chinese Standard | B20 | Classification of International Standard | 67.060 | Word Count Estimation | 9,916 | Date of Issue | 2016-01-07 | Date of Implementation | 2016-01-07 | Quoted Standard | GBZ 115; GB 5009.15; GB 5491; GB/T 6379.1; GB/T 6379.2; GB/T 27404 | Regulation (derived from) | Industry standard filing notice 2016 No. 1 (total 193) | Issuing agency(ies) | National Grain Administration | Summary | This standard specifies the principle, equipment, sample preparation, determination and expression of results of X-ray fluorescence spectrometry for quick screening and quantitative determination of cadmium content. This standard is applicable to the determination of cadmium in rice and its products. The limit of quantification is 0.046mg/kg and the limit of quantification is 0.15mg/kg. |
LST6115-2016: Inspection of grain and oils. Rapid determination of cadmium in rice. X-ray fluorescence spectrometry ---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Inspection of grain and oils.Rapid determination of cadmium in rice.X-ray fluorescence spectrometry
ICS 67.060
B20
People's Republic of China food industry standard
Rapid determination of cadmium in rice by grain and oil inspection
X-ray fluorescence spectrometry
Published on.2016-01-07
2016-01-07 implementation
National Food Bureau released
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard was proposed by the National Grain Administration.
This standard is under the jurisdiction of the National Grain and Oil Standardization Technical Committee (SAC/TC270).
This standard is drafted by. Hunan Provincial Grain and Oil Product Quality Monitoring Center (Hunan Grain and Oil Research Institute).
Participated in the drafting of this standard. Beijing Grain and Oil Food Inspection Institute, Guangxi National Grain Quality Monitoring Center, Guizhou Province Grain and Oil Product Quality
Supervised inspection station, Steel Research Institute Testing Technology Co., Ltd., Jiangsu Tianrui Instrument Co., Ltd.
The main drafters of this standard. Ni Xiaoying, Xu Yanxia, Mei Guang, Huang Li, Yan Shimin, Shang Yanzhen, Yang Zhigang, Liu Mingbo, Liao Xueliang, Chen Yongyan,
Liu Yongying, Wu Min, Yuan Yi.
Rapid determination of cadmium in rice by grain and oil inspection
X-ray fluorescence spectrometry
1 Scope
This standard specifies the principle, equipment and sample system for rapid screening and quantitative determination of cadmium content by X-ray fluorescence spectrometry.
Preparation, sample determination and results presentation.
This standard is applicable to the determination of cadmium in rice and its products. The detection limit of quantitative determination method is 0.046mg/kg, the limit of quantification
It is 0.15 mg/kg.
2 Normative references
The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article.
Pieces. For undated references, the latest edition (including all amendments) applies to this document.
GBZ 115 X-ray diffractometer and fluorescence analyzer health protection standards
GB 5009.15 National Food Safety Standard Determination of Cadmium in Foods
GB 5491 Inspection of food and oil materials, sample method
GB/T 6379.1 Accuracy of measurement methods and results (accuracy and precision) Part 1. General and definition
GB/T 6379.2 Accuracy of measurement methods and results (accuracy and precision) Part 2. Determination of standard method of measurement
Basic method of sex and reproducibility
GB/T 27404 laboratory quality control specification food physical and chemical testing
3 Terms and definitions
The following terms and definitions apply to this document.
3.1
X-ray fluorescence spectroscopy X-rayfluorescencespectrometry
Using primary X-ray photons or other microscopic ions to excite atoms in the substance to be detected, causing them to produce fluorescence (secondary X-rays)
Method of analysis of material composition and chemical state.
Energy dispersive X-ray fluorescence spectroscopy (EDXRF) and wavelength dispersive X-rays are classified according to excitation, dispersion and detection methods.
Fluorescence spectroscopy (WDXRF).
The standard method is energy dispersive X-ray fluorescence spectrometry.
3.2
Quick screening for rapidscreening
Rapid determination of cadmium content in samples, positive or negative, exceeding or not exceeding the current cadmium limit standard in rice (rice)
The result of the target judgment.
4 Principle
The sample is excited by high-energy X-rays to obtain characteristic X-ray fluorescence of cadmium (Cd) elements in the sample. The X-ray is emitted within a certain concentration range.
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