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SN/T 1479-2004: Malachite green residues in the import and export of aquatic products
Status: Obsolete
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| SN/T 1479-2004 | English | 799 |
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Malachite green residues in the import and export of aquatic products
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SN/T 1479-2004
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Basic data | Standard ID | SN/T 1479-2004 (SN/T1479-2004) | | Description (Translated English) | Malachite green residues in the import and export of aquatic products | | Sector / Industry | Commodity Inspection Standard (Recommended) | | Classification of Chinese Standard | X20 | | Classification of International Standard | 67.120.30 | | Word Count Estimation | 20,258 | | Date of Issue | 2004-11-17 | | Date of Implementation | 2005-04-01 | | Regulation (derived from) | 2005 Bulletin No. 3 industry standard; National Accreditation (2012) 57 | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People Republic of China | | Summary | This standard specifies the residues of malachite green in aquatic products export sampling, sample preparation and liquid chromatographic method. This standard applies to export fish, shrimp, shellfish, crabs and its metabolite of malachite green leuco malachite green residues test. | SN/T 1479-2004: Malachite green residues in the import and export of aquatic products---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.
Malachite green residues in the import and export of aquatic products
Book of the People's Republic of China Entry and Exit Inspection and Quarantine
Method for testing malachite green residue in import and export aquatic products
Released on November 11,.2004
2005-04-01 implementation
People's Republic
The General Administration of Quality Supervision, Inspection and Quarantine issued
Foreword
Appendix A and Appendix B of this standard are informative annexes.
This standard is proposed and managed by the National Certification and Accreditation Administration.
This standard was drafted by the Shanghai Entry-Exit Inspection and Quarantine Bureau of the People's Republic of China.
The main drafters of this standard. Guo Dehua, Ye Changlin, Li Bo, Zhu Chang.
This standard is the first industry standard for entry-exit inspection and quarantine.
Method for testing malachite green residue in import and export aquatic products
1 Scope
This standard specifies the sampling, sample preparation and liquid chromatographic methods for the determination of malachite green residues in aquatic products for import and export.
This standard is applicable to the inspection of malachite green and its metabolite leuco malachite green in fish, shrimp, shellfish and crab.
2 sampling and sample preparation
2.1 Inspection lot
Take no more than 10,000 boxes for one inspection lot.
Goods in the same inspection lot should have the same characteristics, such as packaging, marking, origin, specifications and grades.
2.2 Number of samples
The number of samples is shown in Table 1.
Table 1 Sample quantity
Batch/piece
Frozen product, salt collection
Minimum number of samples/piece
150 and below 90 and below 3
151～3200 91～500 5
3201～10000 501～1200 13
- 1201～10000 20
2.3 Sampling method
The number of samples according to 2.2 is randomly selected and opened one by one. Take 500g from each piece as the original sample, the total amount of the original sample is quite a lot.
At 4kg, put it in a clean container, seal it, and send it to the laboratory in time.
2.4 Sample preparation
The edible portion was taken from the extracted original sample and placed in a high-speed tissue masher to be evenly mashed. Mix the minced sample thoroughly and separate
About 500 g, as a sample, was placed in a clean container and marked with a mark.
2.5 Sample storage
The sample was stored frozen below -18 °C.
2.6 Warning
Samples should be protected from contamination or changes in residue levels during sampling and sample preparation.
3 Determination method
3.1 Method summary
The residue in the sample is extracted with an acetonitrile-acetate buffer mixture. After the acetonitrile is extracted again, the liquid and liquid are distributed to the dichloromethane layer, and finally used.
The propane sulfonic acid solid phase extraction cartridge is used for purification, and the eluent is determined by visible light at the CN liquid chromatography column and the PbO2 post-column derivatization column.
the amount. If necessary, it can be confirmed by liquid chromatography-mass spectrometry/mass spectrometry.
3.2 Reagents and materials
Unless otherwise specified, the reagents were of analytical grade and the water was double distilled water.
3.2.1 Acetonitrile. Pure by liquid chromatography.
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