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SN/T 0065.3-2011 (SNT 0065.3-2011)

SN/T 0065.3-2011_English: PDF (SNT0065.3-2011)
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SN/T 0065.3-2011English159 Add to Cart 3 days Method for determination of europium-rich, yttrium-rich, Sm-Eu-Gd oxides for import and export. Part 3: Determination of total rare earth oxides content SN/T 0065.3-2011 Valid SN/T 0065.3-2011

BASIC DATA
Standard ID SN/T 0065.3-2011 (SN/T0065.3-2011)
Description (Translated English) Method for determination of europium-rich, yttrium-rich, Sm-Eu-Gd oxides for import and export. Part 3: Determination of total rare earth oxides content
Sector / Industry Commodity Inspection Standard (Recommended)
Classification of Chinese Standard D41
Classification of International Standard 73.060.99
Word Count Estimation 6,681
Date of Issue 2011-02-25
Date of Implementation 2011-07-01
Older Standard (superseded by this standard) SN 0065.3-1992
Quoted Standard GB/T 6379.2
Drafting Organization Guangdong Exit Inspection and Quarantine of the PRC
Administrative Organization National Certification and Accreditation Administration
Regulation (derived from) ?AQSIQ-Inspection [2011] 90
Summary This standard specifies the import and export of rich europium, determination of europium, gadolinium and samarium, yttrium -rich oxides of total rare earth oxides. This section applies to the import and export rich europium, determination of yttrium and samarium -rich rare earth oxides of europium, gadolinium oxide in total. Measuring range: 85% to 99%.

SN/T 0065.3-2011
Method for determination of europium-rich, yttrium-rich, Sm-Eu-Gd oxides for import and export Part 3. Determination of total rare earth oxides content
People's Republic of China Entry-Exit Inspection and Quarantine Standards
Replacing SN 0065.3-1992
Importers and rich europium, yttrium-rich, samarium, europium, gadolinium oxide determination
Part 3. Determination of total rare earth oxides
Methodfordeterminationofeuropium-rich, yttrium-rich, Sm-Eu-Gd
Part 3. Determinationoftotalrareearthoxidescontent
Issued on. 2011-02-25
2011-07-01 implementation
People's Republic of China
The State Administration of Quality Supervision, Inspection and Quarantine released
Foreword
SN/T 0065 "Importers rich europium, yttrium-rich, samarium, europium, gadolinium oxide measurement method" standard series is divided into three parts.
--- Part 1. Determination of moisture
--- Part 2. Determination of loss on ignition
--- Part 3. Determination of total rare earth oxides
This section SN/T Section 30065 of.
This Part replaces SN 0065.3-1992 "Importers rich europium, yttrium-rich, oxygen measuring samarium rare earth europium, gadolinium oxide measurement method --- gravimetric method
The total amount of compounds. "
". Chemical analysis methods - Part 4 standard writing rules" provisions of this section in accordance with SN 0065.3-1992 GB/T 20001.4
Be revised.
This section compared with SN 0065.3-1992 main changes are as follows.
--- Add a description of the preamble;
--- Delete the obsolete GB 4471 "between Chemical test method precision laboratory tests to determine the repeatability and reproducibility";
--- Given precision repeatability limit, the reproducibility of the method has been covered limit measurement range, delete the original standard "8.2 critical difference calculation"
Terms.
This section proposed and managed by the National Certification and Accreditation Administration Committee.
This section was drafted by. People's Republic of China Guangdong Entry-Exit Inspection and Quarantine of Liaoning People's Republic of China
Bureau, People's Republic of China Foshan Entry-Exit Inspection and Quarantine Jiangmen People's Republic of China, People's Republic of China
Zhanjiang CIQ.
The main drafters of this section. Zhong Zhiguang, Cao Xiaoyan, of Interferon Gu Changsheng Tian Qiong, Zhong Pei Yu, Huang Wenxian, sails, Lu Zhenguo, Zhangzhen Kun,
Peng-speed standard, Zheng Jianguo, Li Jinxing.
This part of the standard replaces the previous editions are.
--- SN 0065.3-1992.
Importers and rich europium, yttrium-rich, samarium, europium, gadolinium oxide determination
Part 3. Determination of total rare earth oxides
1 Scope
SN/T 0065 provisions of this part of the determination of the total import and export rich rare earth oxides of europium, samarium and europium yttrium-rich gadolinium oxide.
This section applies to the import and export rich europium, Determination of total rare earth oxides of yttrium and rich europium, gadolinium, samarium oxide. Measuring range.
85% to 99%.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein
Member. For undated references, the latest edition (including any amendments) applies to this document.
GB/T 6379.2 measurement methods and results of Accuracy (trueness and precision) - Part 2. Determine the standard measurement method to repeat
Of the basic methods of reproduction
3 Method summary
Sample nitric acid - perchloric acid was dissolved and dehydrated, and insolubles were removed by filtration silicon. The filtrate was precipitated with ammonia rare, adding gelatin
Cohesion rare, rare earth and calcium, magnesium, titanium separation. RE oxalic acid precipitation, and further separation of iron, aluminum and other non-rare earth impurities. The precipitate was filtered,
Ash and burning, rare earth oxides in the form of weighing.
4 Reagents
Unless otherwise indicated in the analysis using only recognized as analytical grade reagents and distilled or deionized water.
4.1 perchloric acid (ρ1.67g/mL).