SN/T 1737.3-2010 English PDF

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
SN/T 1737.3-2010	RFQ	ASK	5 days	Determination of herbicide residues. Part 3: Determination of cyclohexanediones herbicide residues in foodstuffs for import and export by LC-MS/MS method	Obsolete

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Basic data

Standard ID: SN/T 1737.3-2010 (SN/T1737.3-2010)
Description (Translated English): Determination of herbicide residues. Part 3: Determination of cyclohexanediones herbicide residues in foodstuffs for import and export by LC-MS/MS method
Sector / Industry: Commodity Inspection Standard (Recommended)
Classification of Chinese Standard: B17
Classification of International Standard: 65.100
Word Count Estimation: 28,252
Date of Issue: 2010-01-10
Date of Implementation: 2010-07-16
Regulation (derived from): National Quality Inspection (2010) No. 13
Issuing agency(ies): General Administration of Customs
Summary: This standard specifies the import and export food pyran grass ketone, grasses off, bentazone ketone, clethodim, sethoxydim, SBR grass ketone, tralkoxydim, grass ketone benzene ring residue liquid chromatography MS/MS determination and confirmatory methods. This standard applies to rice, soybeans, pork, beef liver, chicken liver, milk, oranges, blueberries, spinach, onions, walnuts, tea pyran grass ketone, grasses off, bentazone ketone, clethodim, dilute Wo fixed, SBR grass ketone, tralkoxydim, benzene ring oxadiazon residues detected.

SN/T 1737.3-2010: Determination of herbicide residues. Part 3: Determination of cyclohexanediones herbicide residues in foodstuffs for import and export by LC-MS/MS 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 herbicide residues.Part 3. Determination of cyclohexanediones herbicide residues in foodstuffs for import and export by LC-MS/MS method Exit inspection and quarantine industry standard book People's Republic of China Herbicide residues in Part 3. Liquid chromatography - mass spectrometry/mass spectrometry Determination of imported and exported food Cyclohexenone herbicide residues in ring Issued on. 2010-01-10 2010-07-16 implementation People's Republic of China The State Administration of Quality Supervision, Inspection and Quarantine released

Foreword

SN/T 1737 "herbicide residues method" is divided into five parts. --- Part 1. Gas chromatography-tandem mass spectrometry Cereals and oilseeds amide herbicide residues in; --- Part 2. Determination of Cereals and oilseeds in biphenyl ether herbicides by gas chromatography/mass spectrometry; --- Part 3. Liquid chromatography - mass spectrometry/mass spectrometry cyclohexenone herbicide residues in imported and exported food ring; --- Part 4. Liquid chromatography - mass spectrometry/mass spectrometry oxygen phenoxy acid herbicides residues in imported and exported food aryl; --- Part 5. Liquid chromatography - mass spectrometry/mass spectrometry thiocarbamate herbicide residues in imported and exported food. This section SN/T 1737 Part 3. This section of the Appendix A, Appendix B and Appendix C are informative appendices. This section proposed and managed by the National Certification and Accreditation Administration Committee. This section was drafted by. People's Republic of China Heilongjiang Exit Inspection and Quarantine. The main drafters of this section. Yang Chang-chih, Liu, Wang Wei, Wang Zhuansong, Dengli Yu, Tang Minshun Kang celebrate, Wu Yan, Cheng Yang. Herbicide residues in Part 3. Liquid chromatography - mass spectrometry/mass spectrometry Determination of imported and exported food Cyclohexenone herbicide residues in ring

1 Scope

SN/T 1737 provisions of this part of the imported and exported food tepraloxydim, destroy grasses, grass thiophene ketone, clethodim, sethoxydim, styrene-butadiene grass ketone, Tralkoxydim, grass ketone benzene ring residues in liquid chromatography - mass spectrometry/mass spectrometry and confirmation methods. This section applies to rice, soybeans, pork, beef liver, chicken liver, milk, oranges, blueberries, spinach, onions, walnuts, tea tepraloxydim, Alloxydim, thiophene grass ketone, clethodim, sethoxydim, styrene-butadiene grass ketone, tralkoxydim, benzene ring of grass ketone residues detected.

2 Method summary

Residual sample cyclohexenone herbicides with acidic acetonitrile or acetonitrile extract, the extract was N- secondary amine (PSA), octadecane Silane (ODS) of carbon black and graphite purification by liquid chromatography - mass spectrometry/mass spectrometry detection and confirmation, external standard.

3 Reagents and materials

Unless otherwise specified, all reagents were of analytical grade water as a water GB/T 6682 regulations. 3.1 acetonitrile. chromatography. 3.2 acetic acid (99.5%). 3.3 formic acid (88.0%). 3.4 sodium acetate. 3.5 sodium chloride. 3.6 anhydrous magnesium. by burning 650 ℃ 4h, placed in the dryer set aside. 3.7 1% acetic acid in acetonitrile. Take 10mL acetic acid (3.2), was added 990mL of acetonitrile (3.1) and mix. 3.8 60% aqueous acetonitrile. Take 60mL acetonitrile was added 40mL of water, and mix. 3.9 formic acid - water (999.8 + 0.2, volume ratio. Take 0.2mL of formic acid (3.3), dissolved in water and diluted to 1000mL. 3.10 cyclohexenone class standards. clethodim (Clethodim), CAS number. 99129-21-2, purity greater than or equal to 99%; tepraloxydim (Tepraloxydim), CAS Number. 149979-41-9, purity not less than 99%; thiophene mesotrione (Cycloxydim), CAS Number. 101205-02-1 purity not less than 93.5%; tralkoxydim (Tralkoxydim), CAS number. 87820-88-0, purity greater than or equal 93.5%; alloxydim (Aloxydim-sodium), CAS number. 55635-13-7, purity greater than or equal to 98%; benzene ring grass ketone (Pro- foxydim-lithium), CAS number. 139001-49-3 purity of greater than or equal to 98.5%; SBR grass ketone (Butroxydim), CAS Number. 138164-12-2; purity not less than 99%; sethoxydim (Sethoxydim), CAS Number. 74051-80-2, purity not less than 99%. 3.11 standard solution. 3.11.1 cyclohexanedione standard stock solution. accurately weighed amount of cyclohexenone class standards, dissolved in acetonitrile and dilute to 100mL Brown volumetric flask to give a concentration of 100μg/mL standard stock solution, and the solution was dark storage. 3.11.2 intermediate mixed standard solution. Imbibe standard stock solution cyclohexanedione each 2.5mL to 50mL brown volumetric flask, ......

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