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SN/T 0596-2012 English PDF

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SN/T 0596-2012: Determination of sethoxydim residue in cereals and oilbean for exports. GC/MS
Status: Valid

SN/T 0596: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
SN/T 0596-2012English469 Add to Cart 3 days [Need to translate] Determination of sethoxydim residue in cereals and oilbean for exports. GC/MS Valid SN/T 0596-2012
SN 0596-1996English559 Add to Cart 4 days [Need to translate] Method for the determination of sethoxydim residues in cereals for export Obsolete SN 0596-1996

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Basic data

Standard ID SN/T 0596-2012 (SN/T0596-2012)
Description (Translated English) Determination of sethoxydim residue in cereals and oilbean for exports. GC/MS
Sector / Industry Commodity Inspection Standard (Recommended)
Classification of Chinese Standard X11
Classification of International Standard 67.060
Word Count Estimation 18,185
Older Standard (superseded by this standard) SN 0596-1996
Regulation (derived from) National Quality Inspection (2012) 237
Issuing agency(ies) General Administration of Customs
Summary This standard specifies the cereals for export sethoxydim residues by gas chromatography mass spectrometry and confirmatory methods. This standard applies to exports of corn, rice, soybeans, peanuts and buckwheat sethoxydim residues.

SN/T 0596-2012: Determination of sethoxydim residue in cereals and oilbean for exports. GC/MS

---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 sethoxydim residue in cereals and oilbean for exports. GC/MS People's Republic of China Entry-Exit Inspection and Quarantine Standards Replacing SN 0596-1996 Cereals and oilseeds export in SETHOXYDIM Residue Detection Gas chromatography - mass spectrometry exports-GC/MS Issued on. 2012-05-07 2012-11-16 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. This standard replaces SN 0596-1996 "cereals for export sethoxydim residues in." This standard compared with SN 0596-1996, in addition to editorial changes, the major technical changes are as follows. --- Modify the standard test method using gas chromatography - mass spectrometry method instead of the gas chromatography method; --- Modify the scope of the standard, the standard scope expanded from corn to corn, rice, soybeans, peanuts, and buckwheat; --- Modify the extraction and purification process, was extracted with acetonitrile, eighth and activated carbon, amino solid phase extraction (SPE); --- Measured by the lower limit of 0.04mg/kg was changed to 0.01mg/kg; --- Omitted sampling procedure. This standard is proposed and managed by the National Certification and Accreditation Administration Committee. This standard was drafted. People's Republic of China Liaoning Province Exit Inspection and Quarantine. The main drafters of this standard. Jiang Weixin, Dongzhen Lin Tian Miao, Mike Sui, Bailing, even Xu. This standard replaces the standards previously issued as follows. --- SN 0596-1996. Cereals and oilseeds export in SETHOXYDIM Residue Detection Gas chromatography - mass spectrometry

1 Scope

This standard specifies the cereals for export sethoxydim residual gas chromatography - mass spectrometry and confirmation methods. This standard is applicable to the export of corn, rice, soybeans, peanuts and buckwheat SETHOXYDIM measured residues.

2 Method summary

Sample sethoxydim residue was extracted with acetonitrile extract through C18 and Envi-Carb/NH2 SPE column (SPE) purification, gas Chromatography - mass spectrometry (GC-MS) detection, external standard.

3 Reagents and materials

Unless otherwise specified, the reagents were HPLC grade water to comply with GB/T 6682 secondary water. 3.1 n-hexane. 3.2 acetonitrile. 3.3 Toluene 3.4 acetonitrile - toluene solution (31 volume). acetonitrile and taken 3.1 mixing ratio by volume of toluene. 3.5 anhydrous sodium. AR; 650 ℃ burning 4h, stored in a sealed container in the back. 3.6 sethoxydim standards (Sethoxydim, C17H29NO3S, CAS number. 74051-80-2). purity of greater than or equal to 98%. 3.7 sethoxydim standard solution. Accurately weigh an adequate amount of sethoxydim standard, dubbed the concentration of toluene as a standard stock solution 100μg/mL of. The required standard stock solution was diluted to the appropriate concentration of standard working solution with n-hexane. Stock standard solution and standard working solution in the dark Stored at 0 ℃ ~ 4 ℃ condition.

4 instruments and equipment

4.1 Gas chromatography - mass spectrometry. source with electron impact (EI). 4.2 rotary evaporator. 4.3 Centrifuge. 5000r/min. 4.4 high-speed homogenizer. 4.5 C18 solid phase extraction column. 12mL/2000mg, or equivalent person; prior to use pre-rinsed with 10mL acetonitrile. 4.6 Carb/NH2 SPE 6mL/500mg/500mg, or equivalent person; prior to use about 2cm high anhydrous sodium sulfate, used 10mL of acetonitrile pre-rinse. 4.7 tube. 100mL, glass.

5 Sample Preparation and Storage

Take a representative sample of about 500g, and crushed it all through a pore size of 2.0mm sieve samples. Mix evenly into clean

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