SN/T 1954-2007 English PDF

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
SN/T 1954-2007	439	Add to Cart	3 days	Determination of chlorine dioxide residues in iced meat for import and export. Spectrophotometric method	Obsolete

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Basic data

Standard ID: SN/T 1954-2007 (SN/T1954-2007)
Description (Translated English): Determination of chlorine dioxide residues in iced meat for import and export. Spectrophotometric method
Sector / Industry: Commodity Inspection Standard (Recommended)
Classification of Chinese Standard: X04
Classification of International Standard: 67.050
Word Count Estimation: 11,159
Date of Issue: 2007-08-06
Date of Implementation: 2008-03-01
Regulation (derived from): National-accreditation-Science [2011] 63
Issuing agency(ies): General Administration of Customs
Summary: This standard specifies the chilled residual chlorine dioxide spectrophotometric detection methods. This standard applies to chilled meat chlorine dioxide residues.

SN/T 1954-2007: Determination of chlorine dioxide residues in iced meat for import and export. Spectrophotometric 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 chlorine dioxide residues in iced meat for import and export.Spectrophotometric method Exit inspection and quarantine industry standard book People's Republic of China Import and export of chilled meat in the amount of residual chlorine dioxide Test methods spectrophotometry Posted 2007-08-06 2008-03-01 implementation People's Republic of China The State Administration of Quality Supervision, Inspection and Quarantine released

Foreword

This standard is proposed and managed by the National Certification and Accreditation Administration Committee. This standard was drafted. Jilin People's Republic of China Exit Inspection and Quarantine. The main drafters of this standard. Xu Liming, Zhou Xiao, Chen Yan, Mu Jun. This standard is the first release of the entry-exit inspection and quarantine industry standards. Import and export of chilled meat in the amount of residual chlorine dioxide Test methods spectrophotometry

1 Scope

This standard specifies the spectrophotometric detection method chilled chlorine dioxide residues. This standard applies to the determination of chlorine dioxide chilled meat residues.

2 Method summary

Samples were extracted with phosphate buffered by centrifuged to malonate used as masking agents, coloring agents and adding the DPD chlorine dioxide color, Spectrophotometric determination of absorbance at 552nm at its maximum, thereby to determine the content of chlorine dioxide chilled meat.

3 Reagents and materials

Unless otherwise specified, the reagents were of analytical grade water for ultra-pure water. 3.1 malonate. 3.2 Disodium ethylenediaminetetraacetate (EDTA). 3.3 over anhydrous sodium sulfate. 3.4 sodium hydroxide. 3.5 sulfuric acid. 3.6 potassium dihydrogen phosphate. 3.7 N, N- diethyl - p-phenylenediamine (DPD). 3.8 DPD reagent. Anhydrous sodium sulfate. N, N- diethyl - p-phenylenediamine (DPD). EDTA = 91.5.4. 3.9 malonic acid (10%). 3.10 Sodium hydroxide solution. 2mol/L. 3.11 Sodium hydroxide solution. 0.1mol/L. 3.12 sulfuric acid solution. 1mol/L. 3.13 potassium dihydrogen phosphate solution. 0.1mol/L. 3.14 phosphate buffer (pH = 6.2). Take 500mL0.1mol/L of potassium dihydrogen phosphate (of KH2PO4) plus 81mL0.1mol/L Sodium hydroxide (NaOH) was diluted to 1000mL. 3.15 potassium iodide. 3.16 potassium iodate. after 120 ℃ ~ 140 ℃ drying 2h. 3.17 potassium iodate standard stock solution. Weigh 1.006g potassium iodate dissolved in water, into 1000mL volumetric flask, dilute to the mark, Mix well. 3.18 potassium iodate standard solution. Pipette 1.0mL potassium iodate standard stock solution to a 100mL volumetric flask, dilute to volume, concentration 10.06mg/L.

4 instruments and equipment

4.1 UV spectrophotometer. 4.2 homogenizer. 4.3 high-speed refrigerated centrifuge. ......

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