SN/T 0561-2013 English PDF

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SN/T 0561-2013: Determination of acid-soluble iron content in import and export natural scale graphite. Atomic absorption spectrometric method
Status: Valid

SN/T 0561: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
SN/T 0561-2013	159	Add to Cart	3 days	Determination of acid-soluble iron content in import and export natural scale graphite. Atomic absorption spectrometric method	Valid
SN/T 0561-1996	199	Add to Cart	2 days	Determination of acid-soluble iron content in natural graphite for export. Flame atomic absorption spectrometric method	Obsolete

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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)
Classification of Chinese Standard: D53
Word Count Estimation: 6,666
Older Standard (superseded by this standard): SN/T 0561-1996
Quoted Standard: GB/T 6682-2008
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)
Issuing agency(ies): General Administration of Customs
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 and export natural scale graphite. Atomic absorption spectrometric method

---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.
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. ......

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