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| SN/T 2214-2008 | English | 679 |
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Determination of fluroxypyr, diflufenzopyr, dithiopyr and thiazopyr residues in food of plant origin for import and export. LC-MS/MS method
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SN/T 2214-2008
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PDF similar to SN/T 2214-2008
Basic data | Standard ID | SN/T 2214-2008 (SN/T2214-2008) | | Description (Translated English) | Determination of fluroxypyr, diflufenzopyr, dithiopyr and thiazopyr residues in food of plant origin for import and export. LC-MS/MS method | | Sector / Industry | Commodity Inspection Standard (Recommended) | | Classification of Chinese Standard | X04 | | Word Count Estimation | 17,140 | | Date of Issue | 2008-11-18 | | Date of Implementation | 2009-06-01 | | Regulation (derived from) | National Quality Inspection [2008] No. 577 | | Issuing agency(ies) | General Administration of Customs | | Summary | This standard specifies the foods of plant origin fluroxypyr, dithiopyr pyridine, pyridine grass hydrazone fluoride pyridine four kinds of pyridine and thiophene grass herbicides liquid chromatography mass spectrometry/mass spectrometry. This standard applies to cabbage, corn and oranges fluroxypyr, dithiopyr pyridine, thiophene fluoropyrazole grass grass pyridine hydrazone and four kinds of pyridine herbicides quantitative determination and confirmation. | SN/T 2214-2008: Determination of fluroxypyr, diflufenzopyr, dithiopyr and thiazopyr residues in food of plant origin for import and export. LC-MS/MS method
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Determination of fluroxypyr, diflufenzopyr, dithiopyr and thiazopyr residues in food of plant origin for import and export.LC-MS/MS method
Exit inspection and quarantine industry standard book People's Republic of China
Importers of plant origin foods fluroxypyr, dithiopyr pyridine,
Determination diflufenzopyr pyridine and thiophene grass herbicide residues
Liquid chromatography - mass spectrometry/mass spectrometry
Posted 2008-11-18
2009-06-01 implementation
People's Republic of China
The State Administration of Quality Supervision, Inspection and Quarantine released
Foreword
The Standard Appendix A and Appendix B are informative.
This standard is proposed and managed by the National Certification and Accreditation Committee.
This standard was drafted. People's Republic of China, Shenzhen CIQ.
The main drafters of this standard. Jinbao Hui, Chen Bo, Xie Liqi, Huahong Hui, Zhang Jianying.
This standard is the first release of the entry-exit inspection and quarantine industry standards.
Importers of plant origin foods fluroxypyr, dithiopyr pyridine,
Determination diflufenzopyr pyridine and thiophene grass herbicide residues
Liquid chromatography - mass spectrometry/mass spectrometry
1 Scope
This standard specifies the botanical foods fluroxypyr, dithiopyr pyridine, thiophene diflufenzopyr and grass herbicides pyridine pyridine four kinds of liquid chromatography -
Mass spectrometry/mass spectrometry.
This standard applies to cabbage, corn and oranges fluroxypyr, dithiopyr piperidine, diflufenzopyr thiophene and pyridine four kinds of grass herbicides pyridine
The quantitative determination and confirmation.
2 Method summary
Sample residues fluroxypyr, dithiopyr piperidine, diflufenzopyr pyridine and thiophene grass extracted with acetonitrile, dried SupelcleanC18 SPE net
Technology, using liquid chromatography - mass spectrometry/mass spectrometry and confirmed, external standard.
3 reagent material
Unless otherwise indicated, the reagents used were of analytical grade, water is deionized water.
3.1 acetonitrile. chromatography.
3.2 Methanol. chromatographically pure.
3.3 formic acid. Chromatographic pure.
3.4 sodium chloride.
3.5 0.1% formic acid aqueous solution. Imbibe 1mL acid, transferred into a 1000mL volumetric flask with water to volume, and mix well.
3.6 0.1% formic acid - methanol (50 + 50, by volume). amount of 0.1% formic acid aqueous solution (3.5) 500mL to 1000mL volumetric flask with
Methanol to volume, and mix well.
3.7 pyridine herbicides standards. fluroxypyr (C7H5C12FN2O3, CASN o. 69377-81-7), dithiopyr pyridine (C15H12F2N4O3,
CASN o... 97886-45-8), thiophene grass pyridine (C16H17F5N2O2S, CASN o. 117718-60-2), greater than 99% purity. Diflufenzopyr
(C15H16F5NO2S2, CASN o. 109293-97-2) as the standard liquid, at a concentration of 10mg/L, the solvent is acetonitrile.
3.8 standard stock solution. accurately weighed amount of fluroxypyr, dithiopyr pyridine, thiophene grass pyridine were dissolved in methanol and set the volume to brown volumetric flask
Concentration equivalent to 500mg/L, a stock solution can be stored for 6 months at 0 ℃ ~ 4 ℃ in the dark.
3.9 mixed standard intermediate solution. accurately draw the right amount of fluroxypyr, dithiopyr pyridine, thiophene grass pyridine standard stock solution in a brown volumetric flask, and add
Revenue and other pyridine herbicide concentration of diflufenzopyr with methanol to volume, the concentration of various herbicides as pyridine
1mg/L, this intermediate solution can be stored for one month at 0 ℃ ~ 4 ℃ in the dark.
3.10 mixed standard working solution. draw mixed standard amount of intermediate solution (3.9) according to need before use, with a blank sample matrix solution
Liquid formulation.
3.11 SPE. SupelcleanC18,500mg/3mL, or equivalent person. 5mL acetonitrile and treated before use, holding cylinder
Moist.
3.12 microporous membrane. 0.22μm, the organic phase type.
4 instruments and equipment
4.1 Liquid chromatography - mass spectrometry/mass spectrometer with ESI ion source.
4.2 Balance. a sense of volume and 0.0001g 0.01g.
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