SN/T 1837-2006 English PDFUS$229.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. SN/T 1837-2006: Import and export textiles. Determination of the residues of endosulfan and profenofos. GC-MS method Status: Valid
Basic dataStandard ID: SN/T 1837-2006 (SN/T1837-2006)Description (Translated English): Import and export textiles. Determination of the residues of endosulfan and profenofos. GC-MS method Sector / Industry: Commodity Inspection Standard (Recommended) Classification of Chinese Standard: W04 Classification of International Standard: 59-010 Word Count Estimation: 7,740 Date of Issue: 2006-11-10 Date of Implementation: 2007-05-16 Regulation (derived from): Chinese industry standards for record 2007 of 3 (total of 87) Issuing agency(ies): General Administration of Customs Summary: This standard specifies the gas chromatographic determination of ��-endosulfan in textiles, ��-endosulfan and profenofos residues approach. This standard applies to textile materials and products. SN/T 1837-2006: Import and export textiles. Determination of the residues of endosulfan and profenofos. GC-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. Import and export textiles.Determination of the residues of endosulfan and profenofos.GC-MS method People's Republic of China Entry-Exit Inspection and Quarantine Industry Standard Determination of endosulfan and profenofos residues in import and export textiles Gas chromatography-tandem mass spectrometry Released on.2006-11-10 2007-05-16 implementation People's Republic The General Administration of Quality Supervision, Inspection and Quarantine issued ForewordAppendix 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. Tianjin Entry-Exit Inspection and Quarantine Bureau of the People's Republic of China. Drafters of this standard. Guo Wei, Yu Tao, Yan Wei. This standard is the first industry standard for entry-exit inspection and quarantine. Determination of endosulfan and profenofos residues in import and export textiles Gas chromatography-tandem mass spectrometry1 ScopeThis standard specifies the method for the determination of α-endosulfan, β-endosulfan and profenofos residues in textiles by gas chromatography. This standard applies to textile materials and their products.2 PrincipleThe sample was extracted with petroleum ether, concentrated, dissolved in n-hexane and made up to volume, using a gas chromatograph (GC/ECD) equipped with an electron capture detector. The measurement was performed by external standard method and confirmed by ion chromatography with gas chromatography-mass spectrometry (GC/MSD).3 reagents and materialsThe reagents used were of analytical grade unless otherwise stated. 3.1 Acetone. heavy distillation. 3.2 Petroleum ether. boiling range 60 ° C ~ 90 ° C, heavy distillation. 3.3 n-hexane. heavy distillation. 3.4 Endosulfan, profenofos standard. purity ≥ 99%. 3.5 Standard working solution. accurately weigh the appropriate amount of α-endosulfan, β-endosulfan and profenofos standard, dissolved in n-hexane and prepared 100 μg/mL of standard stock solution. Dilute into a series of standard working solutions of different concentrations with n-hexane as needed. Standard reserve Both the solution and the standard working solution were stored at 4 ° C. The storage period of the standard stock solution was half a year, and the standard working solution was stored for 1 W.4 Instruments and equipment4.1 Gas Chromatograph. equipped with an electron capture detector (ECD). 4.2 Gas Chromatography-Mass Spectrometer. equipped with a mass spectrometer (MSD). 4.3 Soxhlet extractor. 250mL. 4.4 Rotate the evaporator. 4.5 Constant temperature water bath. 4.6 Microinjector. 10 μL.5 Analysis steps5.1 extraction Take 50g representative sample, cut into 5mm × 5mm or less, mix, weigh 5.0g (accurate to 0.01g) sample from the mixed sample (for parallel test) into the filter paper tube, then placed in the Soxhlet extractor, add 100mL petroleum ether in the extraction bottle, at 80 ° C ~ 90 ° C The mixture was refluxed for 6 h in a water bath (reflow rate 8 times/h to 10 times/h). After cooling, the extract was rotary-concentrated to near dryness in a 40 ° C ± 2 ° C water bath. Dissolve in n-hexane and dilute to 5.00 mL, and after appropriate filtration, confirm by gas chromatography or gas chromatography-mass spectrometry. 5.2 Determination 5.2.1 Gas Chromatography (GC-ECD) conditions Since the test results are related to the instrument and conditions used, it is not possible to give a general parameter for chromatographic analysis. Adopt the following parameters It has been proven to be suitable for testing. ...... |
