SN/T 0712-2010 English PDF

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
SN/T 0712-2010	799	Add to Cart	4 days	Determination of 11 herbicide resdues in cereals and soybean for import and export. GC-MS method	Obsolete
SN 0712-1997	559	Add to Cart	4 days	Method for the determination of esprocarb, pendimethalin, pretilachlor, flutolanil, mepronil and mefenacet residues in cereals for export	Obsolete

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Basic data

Standard ID: SN/T 0712-2010 (SN/T0712-2010)
Description (Translated English): Determination of 11 herbicide resdues in cereals and soybean for import and export. GC-MS method
Sector / Industry: Commodity Inspection Standard (Recommended)
Classification of Chinese Standard: B20
Classification of International Standard: 67.060
Word Count Estimation: 20,265
Date of Issue: 2010-03-02
Date of Implementation: 2010-09-16
Older Standard (superseded by this standard): SN/T 0712-1997
Regulation (derived from): National Quality Inspection (2010) 98
Issuing agency(ies): General Administration of Customs
Summary: This standard specifies the import export 11 kinds of cereals and soybeans herbicide residues by gas chromatography mass spectrometry. This standard applies to imports of rice, corn, wheat and soybeans acetochlor, amyl grass Dan, alachlor, metolachlor, pendimethalin, Butachlor, fluorine amide, Pretilachlor, mepronil amines, fluazifop acid alachlor and metolachlor benzoth acid residues and OK.

SN/T 0712-2010: Determination of 11 herbicide resdues in cereals and soybean for import and export. GC-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 11 herbicide resdues in cereals and soybean for import and export. GC-MS method Exit inspection and quarantine industry standard book People's Republic of China Replacing SN 0712-1997 Importers in cereals and soybean herbicides 11 Determination of the amount of residual gas chromatography - mass spectrometry Issued on. 2010-03-02 2010-09-16 implementation People's Republic of China The State Administration of Quality Supervision, Inspection and Quarantine released

Foreword

This standard replaces SN 0712-1997 "pent Caodan cereals for export, pendimethalin, metolachlor, flutolanil, mepronil, benzene thiophene acyl residues of alachlor Allowance test methods. " This standard compared with SN 0712-1997, the main changes are as follows. --- Changing the name of the standard; --- Original standard configuration has been modified; --- By the scope of application of the criteria for the increase in rice wheat, corn and soybeans; --- Increased acetochlor, alachlor, metolachlor, butachlor and alachlor determination of topiramate fluoride acid residues; --- According to the major trading nations of amide herbicides limited demand re-enacted the lower limit of detection; --- Replaces the original standard gas chromatography using a gas chromatography mass spectrometry; --- Increased confirmatory method. Appendix A of this standard is a normative appendix, Appendix B and Appendix C are informative appendices. This standard is proposed and managed by the National Certification and Accreditation Administration Committee. This standard was drafted. Heilongjiang People's Republic of China Exit Inspection and Quarantine. The main drafters of this standard. Kang celebrate, Wu Yan, Yang Chang-chih. This standard was first published on December 1, 1997, this is the first revision. Importers in cereals and soybean herbicides 11 Determination of the amount of residual gas chromatography - mass spectrometry

1 Scope

This standard specifies the import and export in cereals and soybeans of 11 herbicides by gas chromatography - mass spectrometry method. This standard applies to the import and export of rice, corn, wheat and soybeans acetochlor, amyl grass Dan, alachlor, metolachlor, pendimethalin, Ding Metolachlor, flutolanil, metolachlor, mepronil, topiramate fluoride acid alachlor and metolachlor benzene thiophene acyl residues measured and confirmed.

2 Method summary

Sample residual herbicide with n-hexane and acetone extraction and the extract was concentrated, neutral alumina solid phase extraction column or fluorine Florisil Solid phase extraction (SPE), gas chromatography - mass spectroscopy and confirmed, external standard.

3 Reagents and materials

Unless otherwise specified, the reagents were of analytical grade, water is distilled water or equivalent purity. 3.1 acetone. chromatography. 3.2 hexane. chromatographically pure. 3.3 acetonitrile. chromatography. 3.4 sodium chloride. 3.5 anhydrous sodium sulfate. After burning 650 ℃ 4h, placed in the dryer set aside. 3.6 hexane - acetone solution (2 + 1, volume ratio). 3.7 n-hexane - acetone (9 + 1, volume ratio). 3.8 n-hexane - acetone solution (8 + 2, volume ratio). 3.9 11 kinds of herbicides standards. purity of not less than 95.0%. 3.10 standard stock solution. Weigh accurately respectively pesticide standards (see Appendix A), with n-hexane were prepared at a concentration of 100μg/mL ~ 1000μg/mL standard stock solution. Standard stock solution stored at -18 ℃ condition; n-hexane and then diluted to the appropriate concentration needed The standard working solution, at 0 ℃ ~ 4 ℃ storage conditions. 3.11 neutral alumina SPE. 1000mg, 6mL. Before using pre-washed successively with acetone and 3mL, 5mL hexane activation, spare. 3.12 fluoro Rory silica SPE column. 500mg, 6mL. Before using pre-washed successively with acetone and 3mL, 5mL hexane activation and set aside.

4 instruments and equipment

4.1 Gas chromatography - mass spectrometry (GC-MSD). equipped with electron impact ionization ion source (EI). 4.2 Electronic balance. a sense of the amount of 0.0001g and 0.01g. 4.3 Solid phase extraction device. 4.4 mill. 4.5 centrifuge, 5000r/min. 4.6 vortex mixer. 4.7 rotary evaporator. 4.8 homogenizer, 20000r/min. ......

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