SN/T 2297.5-2014 English PDF

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SN/T 2297.5-2014: Chemical analysis method for the imported and exported gypsum and gypsum products - Part 5: Determination of sulfur content - Gas chromatography-mass
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
SN/T 2297.5-2014	209	Add to Cart	3 days	Chemical analysis method for the imported and exported gypsum and gypsum products - Part 5: Determination of sulfur content - Gas chromatography-mass	Valid

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GB/T 5483   JC/T 2625   GB/T 9775   SN/T 2297.8   SN/T 2297.9   SN/T 2297.7   

Basic data

Standard ID: SN/T 2297.5-2014 (SN/T2297.5-2014)
Description (Translated English): Chemical analysis method for the imported and exported gypsum and gypsum products - Part 5: Determination of sulfur content - Gas chromatography-mass
Sector / Industry: Commodity Inspection Standard (Recommended)
Classification of Chinese Standard: Q62
Classification of International Standard: 91.100.10
Word Count Estimation: 8,820
Date of Issue: 4/9/2014
Date of Implementation: 11/1/2014
Quoted Standard: GB/T 2007.2; GB/T 6379.2
Regulation (derived from): State inspection certification (2014) 210
Issuing agency(ies): General Administration of Customs
Summary: This standard specifies the construction gypsum and gypsum products sparse content by gas chromatography - mass spectrometry method. This standard applies to construction gypsum and gypsum products in elemental sulfur content.

SN/T 2297.5-2014: Chemical analysis method for the imported and exported gypsum and gypsum products - Part 5: Determination of sulfur content - Gas chromatography-mass

---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.
(Import and export of gypsum and gypsum products, analytical methods - Part 5. Determination of sulfur content by gas chromatography - mass spectrometry) People's Republic of China Entry-Exit Inspection and Quarantine Standards Import and export of gypsum and gypsum products Analysis Part 5. Determination of sulfur content Gas chromatography - mass spectrometry gypsumandgypsumproducts-Part 5. Determinationofsulfurcontent- Issued on. 2014-04-09 2014-11-01 implementation People's Republic of China The State Administration of Quality Supervision, Inspection and Quarantine released

Foreword

SN/T 2297 "Importers gypsum and gypsum products analysis" is divided into six parts. --- Part 1. Determination of strontium content; --- Part 2. Determination of organic matter; --- Part 3. Determination of sulfide content; --- Part 4. Determination of volatile sulfur compounds; --- Part 5. Determination of sulfur content by gas chromatography - mass spectrometry; --- Part 6. Determination of elemental sulfur. This section SN/T 2297 Part 5. This section drafted in accordance with GB/T 1.1-2009 given rules. This section proposed and managed by the National Certification and Accreditation Administration Committee. This section is drafted. Tianjin People's Republic of China Exit Inspection and Quarantine. The main drafters of this section. Zhou Luo, Su-Mei Wang, Sha Yan, Wei Hongbing, relaxation. The first part of the Department of Inspection and Quarantine issued by industry standards. Import and export of gypsum and gypsum products Analysis Part 5. Determination of sulfur content Gas chromatography - mass spectrometry

1 Scope

SN/T 2297 provisions of this part of the building gypsum and gypsum products in the sulfur content of gas chromatography - mass spectrometry method. This section applies to construction gypsum and gypsum products in elemental sulfur content.

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 2007.2 bulk minerals sampling and sample preparation General 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 (GB/T 6379.2-2004, ISO 5725-2.1994, IDT)

3 Method summary

The sample was extracted with acetone in a Soxhlet sulfur (Soxthern) device, the volume was concentrated after extraction, gas chromatography - mass spectrometry Determination and confirmatory method, external standard.

4 Reagents and materials

4.1 acetone. chromatography. 4.2 anhydrous sodium. AR. 4.3 anhydrous sodium. pure class distinctions. 4.4 Sulfur. pure class distinctions. 4.5 sulfur standard solution. Weigh accurately sulfur (4.4) 0.05g (precise to 0.1mg), acetone (4.1), a period of time, to be weighed Sulfur (4.4) completely dissolved, the solution was transferred to a 50mL volumetric flask (5.6), dilute to the mark with acetone, shake well, then the solution of concentrated sulfuric Degree of 1000mg/L. Dispensing sulfur concentration of 1000mg/5.00mL L standard solution in 50mL volumetric flask (5.6) and dilute with acetone Diluted to the mark, mix, and this solution sulfur concentration of 100mg/L. Using now. 4.6 sulfur standard solution. accurate Pipette respectively appropriate amount of sulfur standard solution (4.5), diluted to a concentration with acetone (4.1) is 0mg/L, 5mg/L, 10mg/L, 15mg/L, 20mg/L of standard working solution. Using now. 5. Apparatus 5.1 Gas chromatography - mass spectrometry (GC-MS). with EI source. 5.2 Soxhlet apparatus. ......

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