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Determination of the metaldehyde in meta for import and export. Gas chromatography method
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Basic data
| Standard ID | SN/T 1787-2006 (SN/T1787-2006) |
| Description (Translated English) | Determination of the metaldehyde in meta for import and export. Gas chromatography method |
| Sector / Industry | Commodity Inspection Standard (Recommended) |
| Classification of Chinese Standard | G25 |
| Classification of International Standard | 65.100 |
| Word Count Estimation | 6,627 |
| Date of Issue | 2006-04-25 |
| Date of Implementation | 2006-11-15 |
| Regulation (derived from) | Industry Standard Notice 2006 No. 7 (No. 79 overall) |
| Issuing agency(ies) | General Administration of Customs |
| Summary | This standard specifies the import and export of smectite in metaldehyde content by gas chromatography detection methods. This standard applies to the original drug metaldehyde formulated with fillers such as extrusion granulation made up 6% of dense granules in the determination of metaldehyde |
SN/T 1787-2006: Determination of the metaldehyde in meta for import and export. Gas chromatography method
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Determination of the metaldehyde in meta for import and export.Gas chromatography method
People's Republic of China Entry-Exit Inspection and Quarantine Industry Standard
Method for detecting quaternary acetaldehyde in import and export
Gas chromatography
Released on.2006-04-25
Implementation of.2006-11-15
People's Republic
The General Administration of Quality Supervision, Inspection and Quarantine issued
Foreword
Appendix A of this standard is an informative annex.
This standard is proposed and managed by the National Certification and Accreditation Administration.
This standard was drafted by the Guangdong Entry-Exit Inspection and Quarantine Bureau.
The main drafters of this standard. Yu Cuiping, Zhou Minghui, Xiao Qian, Chen Qiang, Liu Yingfeng, Zheng Jianguo, Xiao Dahui.
This standard is the first industry standard for entry-exit inspection and quarantine.
Method for detecting quaternary acetaldehyde in import and export
Gas chromatography
1 Scope
This standard specifies the gas chromatographic detection method for the content of metaldehyde in the inlet and outlet of Minda.
This standard is applicable to the dextran aldehyde in 6% granules prepared by extrusion and granulation of tetraacetaldehyde original drug and filler.
Determination.
2 Method summary
After the sample was ground, the tetraacetaldehyde in the sample was ultrasonically extracted with chloroform. After centrifugation and filtration through a microporous membrane, the filtrate is injected.
Detected in a gas chromatograph equipped with a hydrogen flame detector and quantified by internal standard method.
3 reagents and materials
The reagents were of analytical grade unless otherwise stated.
3.1 Trichloromethane.
3.2 Tetraacetaldehyde standard. purity ≥ 98.0%.
3.3 Internal standard. dimethyl phthalate, chromatographically pure.
4 Instruments and equipment
4.1 Gas Chromatograph. with a hydrogen flame detector.
4.2 Ultrasonic cleaning machine.
4.3 High speed centrifuge. 5000r/min.
4.4 Filter membrane. PTFE, 0.45 μm.
4.5 Microsampler. 10 μL.
5 Analysis steps
5.1 Sample preparation
The Milda sample was crushed through a mortar and passed through a 40-mesh sieve. Weigh the sample about 0.5g (accurate to 0.0002g) and place it in 25mL
In a stoppered Erlenmeyer flask, about 0.03 g (accurate to 0.0002 g) of dimethyl phthalate was added. Pipette 10.0mL of chloroform to the conical flask
in. After ultrasonic extraction for 20 min, it was centrifuged. The supernatant was taken, filtered through a microporous membrane, and the filtrate was subjected to gas chromatography.
5.2 Standard solution preparation
Approximately 0.03 g (accurate to 0.0002 g) of the metaldehyde product standard was weighed and placed in a 10 mL volumetric flask. Add about 0.03g (accurate to
0.0002 g) Dimethyl phthalate, dissolved in chloroform, and made up to volume. Shake well.
5.3 Gas chromatographic conditions
a) SPBTM-5 capillary column (15m × 530μm × 3.00μm) or equivalent;
b) inlet temperature. 100 ° C;
c) detector temperature. 180 ° C;
d) Column temperature program. initial temperature 70 ° C, hold 1 min, 5 ° C/min rise to 100 ° C, 10 ° C/min rise to 180 ° C, keep
10min;
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