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SN/T 0195-2011: Determination of 2, 4-D residues in meat and meat products for export. LC-MS/MS
Status: Valid SN/T 0195: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| SN/T 0195-2011 | English | 419 |
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Determination of 2, 4-D residues in meat and meat products for export. LC-MS/MS
| Valid |
SN/T 0195-2011
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| SN 0195-1993 | English | 479 |
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Method for determination of 2, 4-Dresidues in meat and meat products for export
| Obsolete |
SN 0195-1993
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PDF similar to SN/T 0195-2011
Basic data | Standard ID | SN/T 0195-2011 (SN/T0195-2011) | | Description (Translated English) | Determination of 2, 4-D residues in meat and meat products for export. LC-MS/MS | | Sector / Industry | Commodity Inspection Standard (Recommended) | | Classification of Chinese Standard | X22 | | Word Count Estimation | 16,187 | | Date of Issue | 2011-09-09 | | Date of Implementation | 2012-04-01 | | Older Standard (superseded by this standard) | SN 0195-1993 | | Quoted Standard | GB/T 6682 | | Regulation (derived from) | National-Quality-Inspection-accreditation (2011) 492 | | Issuing agency(ies) | General Administration of Customs | | Summary | This standard specifies the export of meat and meat products 2-4-drops residue sample preparation and liquid chromatography-mass spectrometry/mass spectrometry and confirmation methods. This standard applies to the export of meat and meat products 2, 4-residue testing. | SN/T 0195-2011: Determination of 2, 4-D residues in meat and meat products for export. LC-MS/MS---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 2, 4-D residues in meat and meat products for export.LC-MS/MS
People's Republic of China Entry-Exit Inspection and Quarantine Standards
Replacing SN 0195-1993
Exports of meat and meat products 2,4 Residues
Detection Liquid chromatography - mass spectrometry/mass spectrometry
LC-MS/MS
Issued on. 2011-09-09
2012-04-01 implementation
People's Republic of China
The State Administration of Quality Supervision, Inspection and Quarantine released
Foreword
Accordance with the standards GB/T 1.1-2009. Drafting Rules "Standardization Guide Part 1 standard structure and preparation of" given.
This standard is SN 0195-1993 "export meat and meat products for 2,4-D residues in" amendments. Standardized text format
Formula, increasing the "Normative references" and other standards for coding and related content. Some of the original standard text wording and text content
It has been revised. This standard compared with SN 0195-1993 main changes are as follows.
--- Modify the standard Chinese name, the standard Chinese name to "export meat and meat products 2,4 Residues party
Method by liquid chromatography - mass spectrometry/mass spectrometry ";
--- Re-enacted the lower limit of detection;
--- Liquid chromatography - mass spectrometry/mass spectrometry instead of the original standard gas chromatography;
--- Increased confirmatory methods.
This standard is proposed and managed by the National Certification and Accreditation Administration Committee.
This standard was drafted. Tianjin People's Republic of China Exit Inspection and Quarantine.
The main drafters of this standard. He Jia, Zhang Man, Zhang Jun, Lin Anqing, Xu Hong, Wu Yanhui.
This standard replaces the standards previously issued as follows.
--- SN 0195-1993.
Exports of meat and meat products 2,4 Residues
Detection Liquid chromatography - mass spectrometry/mass spectrometry
1 Scope
This standard specifies the export of meat and meat products for 2,4-D residues in sample preparation and liquid chromatography - mass spectrometry/mass spectrometry and confirmation methods.
This standard is applicable to the export of meat and meat products for the detection of residues of 2,4-D.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein
Member. For undated references, the latest edition (including any amendments) applies to this document.
Laboratory use specifications and test methods GB/T 6682 Analysis
3 Method summary
Under acidic conditions, extracted with dichloromethane tissue residues 2,4 and its sodium salt, and transferred to the lye. Washed with an organic solvent
Fandi then acidified, 2,4-extracted with dichloromethane. After removing the solvent volume was dissolved in methanol for liquid chromatography - tandem mass spectrometry.
External standard.
4 Reagents and materials
Unless otherwise specified, reagents were of analytical grade, water GB/T 6682 provisions of ultrapure water.
4.1 Methanol. chromatographically pure.
4.2 dichloromethane.
4.3 ethanol.
4.4 anhydrous ether.
4.5 sulfuric acid - water (19). In excellent pure concentrated sulfuric acid formulation. After water (19) extracted twice with 50mL methylene chloride - sulfuric acid per 500mL
spare.
4.6 Sodium hydroxide solution (30g/L). In excellent pure sodium hydroxide formulated. Each 500mL sodium hydroxide solution (30g/L) with two 25mL
Chloride extracted twice after use.
4.7 Sodium chloride. pure class distinctions, each 250g of sodium chloride 100mL dichloromethane ultrasonic extraction twice, evaporated to dryness, burning at 600 ℃ 4h, storage
In a stoppered bottle.
4.8 saturated sodium chloride solution. formulated with excellent pure sodium chloride. Each 250mL 25mL saturated sodium chloride solution twice extracted with methylene chloride
Reserve.
4.9 2,4-D (2,4-D; CAS Number. 94-75-7) Standard. Purity ≥99%.
4.10 2,4-standard solution. Weigh accurately 10mg2,4- drop standard (4.9) was dissolved in methanol (4.1) and dilute to 100mL, preparation
To a concentration of 0.100mg/mL standard stock solution. Then progressively diluted with methanol to a standard working solution of appropriate concentration.
4.11 matrix extract. blank sample, after other operations resulting solution was treated with 7.1.
4.12 matrix standard solution. A standard solution (4.10) in dry nitrogen blowing instrument in order to extract the matrix was dissolved, after the vortex 30s
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