SN/T 1989-2007 English PDF

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
SN/T 1989-2007	639	Add to Cart	3 days	Determination of daminozide residues in food for import and export. Gas chromatography-mass spectrometry method	Obsolete

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Basic data

Standard ID: SN/T 1989-2007 (SN/T1989-2007)
Description (Translated English): Determination of daminozide residues in food for import and export. Gas chromatography-mass spectrometry method
Sector / Industry: Commodity Inspection Standard (Recommended)
Classification of Chinese Standard: X04
Classification of International Standard: 67.050
Word Count Estimation: 16,136
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 food daminozide residues by gas chromatography mass spectrometry. This standard applies to peanuts, rice, beans, parsley, apples, fish, chicken, tea, honey daminozide residues.

SN/T 1989-2007: Determination of daminozide residues in food for import and export. Gas chromatography-mass spectrometry 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 daminozide residues in food for import and export.Gas chromatography-mass spectrometry method Exit inspection and quarantine industry standard book People's Republic of China Imported and exported food daminozide Residue Detection Gas chromatography - mass spectrometry Posted 2007-08-06 2008-03-01 implementation People's Republic of China The State Administration of Quality Supervision, Inspection and Quarantine released

Foreword

Appendix A of this standard is an informative annex. This standard is proposed and managed by the National Certification and Accreditation Administration Committee. This standard by the People's Republic of China Liaoning Province Exit Inspection and Quarantine is responsible for drafting. The main drafters of this standard. Dongzhen Lin Tian Miao, Yang Chunguang, Xufeng Min, ZHAO Jing Hong, Dong Weifeng, in spirit, Wang Hongwei. This standard is the first release of the entry-exit inspection and quarantine industry standards. Imported and exported food daminozide Residue Detection Gas chromatography - mass spectrometry

1 Scope

This standard specifies the foods daminozide residues by gas chromatography - mass spectrometry method. This standard applies to peanuts, rice, beans, parsley, apples, fish, chicken, tea, honey daminozide residues determination.

2 Method summary

Sample of daminozide residue was extracted with water, by steam distillation, salicylaldehyde derivatized silica solid phase extraction (SPE) with gas chromatography Spectrum - mass spectrometer measurement, external standard.

3 Reagents and materials

Unless otherwise specified, the reagents were of analytical grade, water re-distilled water. 3.1 hexane. chromatographically pure. 3.2 sodium hydroxide. 3.3 sodium chloride. 3.4 glacial acetic acid. 3.5 salicylaldehyde. 3.6 ethyl acetate. chromatography. 3.7 ethyl acetate - n-hexane. ethyl acetate + n-hexane (97 + 3, volume ratio). Acetic acid 3.8. 10% (by volume). Pipette 10mL of glacial acetic acid was added 90mL of water, mix thoroughly. 3.9 Sodium hydroxide solution. 50% (mass concentration). Weigh 500g of sodium hydroxide is gradually dissolved in 1L of water, cooled and mixed thoroughly. 3.10 1,1-dimethylhydrazine standards (1,1-dimethylhydrazine, C2H8N2, CAS. 57-14-7). 98% or greater purity. 3.11 1,1-dimethyl-hydrazine stock solution. Accurately weigh an appropriate amount of 1,1-dimethyl-hydrazine standard 0.1g (accurate to 0.1mg), was added To be filled with 2mL of acetic acid solution (3.8) in a small beaker and transferred to a 1L brown volumetric flask with water, dubbed the concentration of 100μg/mL standard Quasi stock solution. Required standard stock solution is diluted with water to the appropriate concentration of the working standard solution. Stock solution in the dark at 4 ℃ Storage. Once every six months preparation.

4 instruments and equipment

4.1 Gas chromatograph with mass selective detector. 4.2 steam distillation apparatus. 4.3 Centrifuge. 5000r/min. 4.4 rotary evaporator. 4.5 oscillator. 4.6 sonicator. 4.7 SPE column. silica gel, 6mL, 1000mg, or equivalent person. 4.8 plug Erlenmeyer flask. 250mL. 4.9 stoppered test tube. 25mL. ......

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