| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| SN/T 1920-2007 | English | 719 |
Add to Cart
|
3 days [Need to translate]
|
Determination of trichlorfor, dichlorvols and coumaphos residues in foodstuffs of animal orign for import and export. LC-MS/MS method
| Obsolete |
SN/T 1920-2007
|
PDF similar to SN/T 1920-2007
Basic data | Standard ID | SN/T 1920-2007 (SN/T1920-2007) | | Description (Translated English) | Determination of trichlorfor, dichlorvols and coumaphos residues in foodstuffs of animal orign for import and export. LC-MS/MS method | | Sector / Industry | Commodity Inspection Standard (Recommended) | | Classification of Chinese Standard | C53 | | Classification of International Standard | 67.020 | | Word Count Estimation | 18,173 | | Date of Issue | 2007-05-23 | | Date of Implementation | 2007-12-01 | | Regulation (derived from) | National-accreditation-Science [2011] 63 | | Issuing agency(ies) | General Administration of Customs | | Summary | This standard specifies the livestock, poultry cut meat, salted casings and honey trichlorfon, dichlorvos, coumaphos residues sample preparation and liquid chromatography mass spectrometry/mass spectrometry test methods. This standard applies to cut meat, salted casings and honey trichlorfon, dichlorvos, coumaphos residues. | SN/T 1920-2007: Determination of trichlorfor, dichlorvols and coumaphos residues in foodstuffs of animal orign for import and export. 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 trichlorfor, dichlorvols and coumaphos residues in foodstuffs of animal orign for import and export.LC-MS/MS method
Exit inspection and quarantine industry standard book People's Republic of China
Import and export of animal-derived foods trichlorfon, dichlorvos,
Detection coumaphos residues
Liquid chromatography - mass spectrometry/mass spectrometry
Posted 2007-05-23
2007-12-01 implementation
People's Republic of China
The State Administration of Quality Supervision, Inspection and Quarantine released
Foreword
The Standard Appendix A, Appendix B and Appendix C are informative appendices.
This standard is proposed and managed by the National Certification and Accreditation Administration Committee.
This standard by the People's Republic of China, Chongqing Entry-Exit Inspection and Quarantine and the Chinese People's Republic of China Hunan
Zhejiang People's Republic of Exit Inspection and Quarantine is responsible for drafting.
The main drafters of this standard. Wang Guomin, Dai Hua, Xie Zhu Ge, Wang Meiling, Lixian Liang, Li Ying Kwok, Zhang Lei, Zhou Qiming, Wang Xiangxian.
This standard is the first release of the entry-exit inspection and quarantine industry standards.
Import and export of animal-derived foods trichlorfon, dichlorvos,
Detection coumaphos residues
Liquid chromatography - mass spectrometry/mass spectrometry
1 Scope
This standard specifies the livestock, poultry cut meat, sausage and salted honey trichlorfon, dichlorvos, coumaphos residues in sample preparation and liquid chromatography -
MS/MS test.
This standard applies to meat, sausage and salted honey trichlorfon, dichlorvos, coumaphos residues measured segmentation.
2 Sample preparation and preservation
Cuts. Take a representative sample of about 500g, with the organization stamp mill crushed, as a sample into a clean container, sealed and marked to do
Knowledge, in the -18 ℃ refrigerator.
Casings. Take a representative sample of about 100g, cut into pieces with scissors to 2mm or less, as a sample into a clean container, sealed and marked to do
Knowledge, in the -18 ℃ refrigerator.
Honey. Take a representative sample of about 500g, stir into a clean container sealed and be marked at -18 ℃ refrigerator
save.
Sample preparation process operation should prevent sample contamination or the occurrence of the change of residue content.
3 Method summary
Sample trichlorfon, dichlorvos, coumaphos extracted with methylene chloride or ethyl acetate, and the extract was concentrated and defatted by liquid chromatography -
Mass spectrometry/mass spectrometer, external standard peak area for quantitative, qualitative ion abundance ratio.
4 Reagents and materials
All reagents unless otherwise specified, were of analytical grade, double distilled water.
4.1 acetonitrile. HPLC fractions.
4.2 Methanol. HPLC fractions.
4.3 ethyl acetate.
4.4 dichloromethane.
4.5 cyclohexane.
4.6 sodium. 650 ℃ burning 4h, cooled in a desiccator to room temperature and stored in a sealed bottle aside.
4.7 ammonium acetate. excellent pure or equivalent person.
4.8 50mmol/L ammonium acetate solution. Weigh 0.385g of ammonium acetate dissolved in 1000mL water.
4.9 trichlorfon (Trichlorfor, CAS number. 52-68-6, molecular formula. C4H8Cl13O4P) Standard. purity of greater than or equal to 98.0%.
4.10 DDVP (Dichlorvos, CAS number. 62-73-7, molecular formula. C4H7Cl2O4P) Standard. purity of greater than or equal to 97.6%.
4.11 coumaphos (Coumaphos, CAS number. 56-72-4, molecular formula. C14H16ClO5PS) Standard. purity of greater than or equal to 99.9%.
4.12 standard stock solution. namely, accurately weighed amount trichlorfon, dichlorvos, coumaphos standards, prepared in methanol at a concentration of 100μg/mL
Concentrations of mixed standard stock solution. This solution was stored in the dark at 0 ℃ ~ 4 ℃ refrigerator can be used for 3 months.
4.13 blank sample extracts. not containing trichlorfon, dichlorvos, coumaphos residues in samples, blank samples extract prepared according to 6.1.
4.14 standard solution. as needed with a blank sample extract diluted stock standard solution to 50ng/mL, 100ng/mL,
|