GB/T 13883-2023 (GB/T13883-2023, GBT 13883-2023, GBT13883-2023)
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Determination of selenium in feeds
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GB/T 13883-2023
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Standards related to: GB/T 13883-2023
| Standard ID | GB/T 13883-2023 (GB/T13883-2023) | | Description (Translated English) | Determination of selenium in feeds | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | B46 | | Classification of International Standard | 65.120 | | Word Count Estimation | 14,140 | | Date of Issue | 2023-08-06 | | Date of Implementation | 2024-03-01 | | Older Standard (superseded by this standard) | GB/T 13883-2008 | | Drafting Organization | National Food Wuhan Scientific Research and Design Institute Co., Ltd., Changsha Xingjia Bioengineering Co., Ltd., Shandong New Hope Liuhe Group Co., Ltd., Yibin University | | Administrative Organization | National Feed Industry Standardization Technical Committee (SAC/TC 76) | | Proposing organization | National Feed Industry Standardization Technical Committee (SAC/TC 76) | | Issuing agency(ies) | State Administration for Market Regulation, National Standardization Administration | GB/T 13883-2023. Determination of selenium in feed
ICS 65.120
CCSB46
National Standards of People's Republic of China
Replace GB/T 13883-2008
Determination of Selenium in Feed
Published on 2023-08-06
2024-03-01 Implementation
State Administration for Market Regulation
Released by the National Standardization Administration Committee
Preface
This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1.Structure and Drafting Rules of Standardization Documents"
Drafting.
This document replaces GB/T 13883-2008 "Determination of Selenium in Feed". Compared with GB/T 13883-2008, except for structural adjustment and compilation
In addition to editorial changes, the main technical changes are as follows.
a) Changed the scope of application (see Chapter 1, Chapter 1 of the.2008 edition);
b) Changed the quantitative limit of hydride generation-atomic fluorescence spectrometry (see Chapter 1, Chapter 1 of the.2008 edition);
c) Hydrogen generation-atomic fluorescence spectrometry and fluorescence spectrophotometry sample solution preparation are added with microwave digestion method (see 4.5.1.2,
5.5.1.2);
d) Added inductively coupled plasma mass spectrometry (see Chapter 6).
Please note that some content in this document may be subject to patents. The publisher of this document assumes no responsibility for identifying patents.
This document is proposed and coordinated by the National Feed Industry Standardization Technical Committee (SAC/TC76).
This document was drafted by. Guofang Wuhan Scientific Research and Design Institute Co., Ltd., Changsha Xingjia Bioengineering Co., Ltd., Shandong Xinxi
Wangliuhe Group Co., Ltd., Yibin University.
The main drafters of this document. Huang Changjun, Huang Yiqiang, Guo Tuanjie, Wang Sisi, Liu Xiaomin, Zhang Fengping, Su Yonghao, Yang Qing, Hong Shuangsheng,
Chen Mengying, Shao Rui, Wang Yongqiang, Zhong Fang, Li Yong, Qin Shicong.
The previous versions of this document and the documents it replaces are as follows.
---First published as GB/T 13883-1992 in.1992, first revised in.2008;
---This is the second revision.
Determination of Selenium in Feed
1 Scope
This document describes hydride generation for the determination of selenium in feed - atomic fluorescence spectrometry, fluorescence spectrophotometry and inductively coupled plasma
Mass spectrometry.
The hydride generation-atomic fluorescence spectrometry and fluorescence spectrophotometry in this document are applicable to compound feed, concentrated feed, concentrate supplements,
Determination of selenium in additive premixed feeds and feed raw materials, inductively coupled plasma mass spectrometry is suitable for compound feeds, concentrated feeds, and concentrates
Determination of selenium in supplements and feed ingredients (other than mineral feed ingredients).
When the sampling volume is 1g and the fixed volume is 50mL, the detection limit of hydride generation-atomic fluorescence spectrometry and fluorescence spectrophotometry is
0.01mg/kg, the limit of quantitation is 0.02mg/kg; when the sampling volume is 0.5g and the constant volume is 50mL, the inductively coupled plasma mass spectrometry method
The detection limit is 0.01mg/kg and the quantitation limit is 0.02mg/kg.
2 Normative reference documents
The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, the dated quotations
For undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to
this document.
GB/T 6682 Specifications and test methods for water used in analytical laboratories
GB/T 20195 Preparation of animal feed samples
3 Terms and definitions
There are no terms or definitions to be defined in this document.
4 Hydride generation-atomic fluorescence spectrometry (arbitration method)
4.1 Principle
After the sample is digested with acid, the selenium in the sample digestion liquid is reduced to tetravalent selenium in hydrochloric acid medium. Potassium borohydride is used as the reducing agent to convert the tetravalent selenium into
It is reduced to hydrogen selenide in hydrochloric acid medium, which is brought into the atomizer by carrier gas for atomization. Under the irradiation of selenium hollow cathode lamp, the ground state selenium atoms
It is excited to a high energy state, and when deactivated and returned to the ground state, it emits fluorescence with a characteristic wavelength. Its fluorescence intensity is proportional to the selenium content and is the same as that of the standard system.
Column comparisons are quantitative.
4.2 Reagents or materials
Warning---All kinds of strong acids should be handled with caution. Dilution and use should be done in a fume hood. When using perchloric acid, be careful not to burn it to dryness. Be careful.
explode.
Unless otherwise specified, use only analytically pure reagents.
4.2.1 Water. GB/T 6682, Level 2.
4.2.2 Nitric acid. superior grade pure.
4.2.3 Perchloric acid. superior grade pure.
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