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SN/T 0561-2013

Chinese Standard: 'SN/T 0561-2013'
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SN/T 0561-2013English159 Add to Cart Days<=3 Determination of acid-soluble iron content in import and export natural scale graphite. Atomic absorption spectrometric method Valid SN/T 0561-2013
SN/T 0561-2013Chinese14 Add to Cart <=1-day [PDF from Chinese Authority, or Standard Committee, or Publishing House]

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BASIC DATA
Standard ID SN/T 0561-2013 (SN/T0561-2013)
Description (Translated English) Determination of acid-soluble iron content in import and export natural scale graphite. Atomic absorption spectrometric method
Sector / Industry Commodity Inspection Standard (Recommended)
Word Count Estimation 6,694
Older Standard (superseded by this standard) SN/T 0561-1996
Quoted Standard GB/T 6682-2008
Drafting Organization Hebei Exit Inspection and Quarantine of the PRC
Administrative Organization National Certification and Accreditation Administration
Regulation (derived from) ?AQSIQ About publishing 2013 First Batch 179-items Entry-Exit Inspection and Quarantine industry standard Announcement; Industry-Standard-Filing Announcement 2013 No. 9 (Total No. 165)
Proposing organization Certification and Accreditation Administration of the People's Republic of China
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
Summary This standard specifies the import and export of natural flake graphite atomic acid-soluble iron content of absorption spectrophotometric method. This standard applies to the determination of acid-soluble natural flake graphite iron content. Measurement r

SN/T 0561-2013
Determination of acid-soluble iron content in import
People's Republic of China Entry-Exit Inspection and Quarantine Standards
Instead of the SN/T 0561-1996
Determination of the import and export of natural flake graphite in acid-soluble iron content
Atomic absorption spectrophotometry
Issued on. 2013-03-01
2013-09-16 implementation
People's Republic of China
The State Administration of Quality Supervision, Inspection and Quarantine released
Foreword
This standard was drafted in accordance with GB/T 1.1-2009 given rules.
Instead of the standard SN/T 0561-1996 "export natural flake graphite in acid-soluble iron content by atomic absorption spectrometry method."
In addition to this standard editorial changes, the increase of the "washed free of iron ions until the" judging method (see 6.3.1 and 6.3.1 of the 1996 edition).
This standard is proposed and managed by the National Certification and Accreditation Administration Committee.
This standard was drafted. People's Republic of China Hebei Exit Inspection and Quarantine.
The main drafters of this standard. Lin Yang, Yuan Wang V, Gu Yansheng.
This standard replaces the standards previously issued as follows.
--- SN/T 0561-1996.
Determination of the import and export of natural flake graphite in acid-soluble iron content
Atomic absorption spectrophotometry
1 Scope
This standard specifies the atom and export natural flake graphite in acid-soluble iron content absorption spectrophotometric method.
This standard applies to the determination of natural flake graphite in acid-soluble iron content. Measurement range 0.01% to 1.25%.
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.
Laboratory use specifications and test methods GB/T 6682-2008 Analysis
3 Method summary
In a sample with hydrochloric acid soluble iron dissolved in hydrochloric acid medium, at an atomic absorption spectrophotometer at a wavelength of 248.3nm, air - B
Alkyne flame determination of iron absorbance.
4 Reagents
Unless otherwise indicated, the reagents used were of analytical grade water to comply with two water GB/T 6682-2008 requirements.
4.1 hydrochloric acid (ρ = 1.19g/mL).
4.2 nitric acid (ρ = 1.42g/mL).
4.3 KSCN.
4.4 potassium permanganate.
4.5 iron standard stock solution. Weigh 1.0000g high iron (99.99%) in the beaker, add 50mL water, 50mL of nitric acid (4.2), cover
Watch glass, heat until completely dissolved; then, add water, 20mL, boiled, to expel oxides of nitrogen, cooled and transferred to 1000mL volumetric flask
Dilute with water to volume, and mix. 1mL solution containing 1mg iron. You can also use a commercially available certified reference solution.
4.6 iron standard solution. Pipette 10.00mL iron standard stock solution (4.5) in a volumetric flask, dilute with water to volume, and mix. This solution
1mL containing 100μg iron.
4.7 hydrochloride (11).
4.8 hydrochloric acid (199).
4.9 thiocyanate solution (1%). take 1g thiocyanate (4.3) were dissolved in 100mL water.
4.10 acidic potassium permanganate solution (1%). Weigh 1g potassium permanganate (4.4), was dissolved in 100mL dilute sulfuric acid (14) in.
5 Instruments
Atomic absorption spectrophotometer, with iron hollow cathode lamp.
Under optimum working conditions for those who can reach the following indicators can be used.
Related standard:   SN/T 0491-2019  SN/T 0800.10-2019
   
 
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