Powered by Google-Search & Google-Books Chinese Standards Shop Database: 169760 (Jul 4, 2020)
HOME  COVID-19   Quotation   Tax   Examples Standard-List   Contact-Us   View-Cart
  

SN/T 0502-2013

Chinese Standard: 'SN/T 0502-2013'
Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusRelated Standard
SN/T 0502-2013English349 Add to Cart Days<=3 Determination of toxaphene residues in aquatic products for export. GC method Valid SN/T 0502-2013
SN/T 0502-2013Chinese16 Add to Cart <=1-day [PDF from Chinese Authority, or Standard Committee, or Publishing House]

 SN/T 0502-2013 -- Click to view similar PDF/Books...  

BASIC DATA
Standard ID SN/T 0502-2013 (SN/T0502-2013)
Description (Translated English) Determination of toxaphene residues in aquatic products for export. GC method
Sector / Industry Commodity Inspection Standard (Recommended)
Classification of Chinese Standard X20
Classification of International Standard 67.120.30
Word Count Estimation 15,190
Older Standard (superseded by this standard) SN 0502-1995
Quoted Standard GB/T 6682
Drafting Organization People's Republic of China, Shandong Entry-Exit Inspection and Quarantine Bureau
Administrative Organization National Certification and Accreditation Administration
Regulation (derived from) National quality recognition (2013), No. 464; industry standard filing Notice No. 1 of 2014 (No. 169 overall)
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 sample gas chromatographic method residues in aquatic products and toxaphene. This standard applies to fin fish, scallops, shrimp, crab toxaphene residues detected.

SN/T 0502-2013
Determination of toxaphene residues in aquatic products for export. GC method
People's Republic of China Entry-Exit Inspection and Quarantine Standards
Replacing SN 0502-1995
Determination of Finland residues in aquatic products export poisoning
Gas chromatography
Issued on. 2013-08-30
2014-03-01 implementation
People's Republic of China
The State Administration of Quality Supervision, Inspection and Quarantine released
Foreword
Accordance with the standards GB/T 1.1-2009 given rules drafted.
This standard replaces SN 0502-1995 "Fern residues in aquatic products for export poisoned."
This standard compared with SN 0502-1995, in addition to editorial changes outside the main technical changes are as follows.
--- Standard name "Fern residues in aquatic products for export poisoned" by a modification of the "export of aquatic toxaphene residues measure
GC set ";
--- Expand the scope of the standard detection object;
--- Deletion of a portion of the sample;
--- Improved sample preparation techniques;
--- Reducing the lower limit of detection, and detection of different objects, given the recovery of different substrates by adding different concentrations of the standard substance
range.
This standard is proposed and managed by the National Certification and Accreditation Administration Committee.
This standard was drafted. People's Republic of China Shandong CIQ.
The main drafters of this standard. Li Xiaoyu, Wang Ying, Cao Peng, bell, road Yin, Shen Zhigang, Li Jinjiang, Sui Tao, Lee Soo-Yong, Yu Jie.
This standard replaces the standards previously issued as follows.
--- SN 0502-1995.
Determination of Finland residues in aquatic products export poisoning
Gas chromatography
1 Scope
This standard specifies the gas chromatographic method sample preparation aquatic products for export and toxaphene residues.
This standard applies to cod, scallops, shrimp, crab toxaphene residues detected.
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 Analysis
3 Sample Preparation and Storage
Samples taken in the edible parts of representative about 500g, mix well with mashed masher organizations are divided into two, respectively, into a clean container
As a sample, sealed and marked with tags. The sample was placed in -18 ℃ stored.
4 Determination
4.1 Method summary
Toxaphene in the sample by using acetone - n-hexane mixture was extracted with n-hexane saturated acetonitrile solution was dispensed, florisil column net
Oriented and concentrated, determined by gas chromatography, normalized and quantified.
4.2 Reagents and materials
Unless otherwise specified, the reagents were of analytical grade water as a water GB/T 6682 regulations.
4.2.1 Anhydrous sodium sulfate. After burning 650 ℃ 4h, cooled to room temperature, store in an airtight desiccator.
4.2.2 acetonitrile. chromatography.
4.2.3 n-hexane. chromatographically pure.
4.2.4 acetone. chromatography.
4.2.5 acetone - hexane mixture solution (11 volume). Measure 250mL of acetone, 250mL of n-hexane was added, and mix.
4.2.6 20g/L of sodium sulfate solution. Weigh 20.0g of solid anhydrous sodium sulfate was added 500mL of water, plus side oscillation, so that no
Aqueous sodium completely dissolved, add water to the final volume to 1L.
4.2.7 n-hexane saturated acetonitrile solution. 20mL of n-hexane was added 100mL of acetonitrile, followed by sufficient shaking, standing stratification, lower B
Nitrile layer alternate.
4.2.8 hexane - ethyl acetate solution (955 volume). Measure 25mL of ethyl acetate, diluted with 475mL hexane.
4.2.9 Florisil. 450 ℃ burning 2h, cooled storage backup in a desiccator.
4.2.10 Florisil column. 300mm × 15mm (inner diameter) glass column, built with 5g Florisil, top and bottom, respectively, containing
Related standard:   SN/T 0944-2016  SN/T 0561-2013
   
 
Privacy   ···   Product Quality   ···   About Us   ···   Refund Policy   ···   Fair Trading   ···   Quick Response
Field Test Asia Limited | Taxed in Singapore: 201302277C | Copyright 2012-2020