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SN/T 1950-2007 English PDF

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US$449.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
SN/T 1950-2007: Determination of organphosphorus pesticides multiresidues in tea for import and export--Gas chromatography
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
SN/T 1950-2007	449	Add to Cart	3 days	Determination of organphosphorus pesticides multiresidues in tea for import and export--Gas chromatography	Valid

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NY/T 939 NY/T 2334 SN/T 2051 SN/T 5650 SN/T 5601 SN/T 1949

Basic data

Standard ID: SN/T 1950-2007 (SN/T1950-2007)
Description (Translated English): Determination of organphosphorus pesticides multiresidues in tea for import and export--Gas chromatography
Sector / Industry: Commodity Inspection Standard (Recommended)
Classification of Chinese Standard: X04
Classification of International Standard: 67.050
Word Count Estimation: 14,163
Date of Issue: 2007-08-06
Date of Implementation: 2008-03-01
Regulation (derived from): National-accreditation-Science [2011] 63
Issuing agency(ies): General Administration of Customs
Summary: This standard specifies the tea dichlorvos, methamidophos, acephate, phorate, omethoate, disulfoton, iprobenfos, dimethoate, leather fly phosphorus, chlorpyrifos, fenitrothion, sulfur phosphorus, isocarbophos, methidathion, ethion, triazophos, Finland parathion, EPN, phosmet, phosalone, pyrazosulfuron phosphorus and other 21 kinds of organophosphorus pesticide residues by gas chromatographic method. This standard applies to tea 21 kinds of organophosphorus pesticide residues.

SN/T 1950-2007: Determination of organphosphorus pesticides multiresidues in tea for import and export--Gas chromatography

---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 organphosphorus pesticides multiresidues in tea for import and export - Gas chromatography Exit inspection and quarantine industry standard book People's Republic of China Import and export a variety of organophosphorus pesticides in tea Residue detection methods Gas Chromatography Posted 2007-08-06 2008-03-01 implementation People's Republic of China The State Administration of Quality Supervision, Inspection and Quarantine released

Foreword

Appendix A of this standard is an informative annex. This standard is proposed and managed by the National Certification and Accreditation Administration Committee. This standard was drafted. People's Republic of China Hunan Exit Inspection and Quarantine. The main drafters. Zhang Ying, Yan Hongfei, Sun Fei, Huang Zhiqiang, Wang Meiling, Li Yongjun. This standard is the first release of the entry-exit inspection and quarantine industry standards. Import and export a variety of organophosphorus pesticides in tea Residue detection methods Gas Chromatography

1 Scope

This standard specifies the tea dichlorvos, methamidophos, acephate, phorate, omethoate, phorate, IBP, dimethoate, Hypoderma Phosphorus, chlorpyrifos, fenitrothion, parathion, Isocarbophos, methidathion, ethion, triazophos, Finland parathion, parathion benzene, phosmet, phosalone, Pyrazosulfuron phosphorus and other 21 kinds of organophosphorus pesticides - Gas chromatographic method amounts. This standard applies to the determination of tea 21 kinds of organophosphorus pesticide residues.

2 Method summary

After the samples were immersed in water (1 + 1, volume ratio) was extracted with ethyl acetate and ethyl acetate + n-hexane, over a charcoal column purification, distribution Preparation of flame photometric detector gas chromatograph measured, quantified by external standard.

3 Reagents and materials

Unless otherwise specified, all reagents were of analytical grade, water is distilled water. 3.1 ethyl acetate. redistilled. 3.2 hexane. redistilled. 3.3 acetone. redistilled. 3.4 anhydrous sodium. 650 ℃ burning 4h. 3.5 dichlorvos, methamidophos, acephate, phorate, omethoate, phorate, IBP, dimethoate, Hypoderma phosphorus, chlorpyrifos, fenitrothion, Parathion, Isocarbophos, methidathion, ethion, triazophos, Finland parathion, parathion benzene, phosmet, phosalone, topiramate ethyl phosphorus and other 21 kinds of pesticide standard Associate Products. purity greater than or equal to 98%. 3.6 pesticide standard solution. Accurately weigh an appropriate amount of a single organophosphorus pesticide standards, paired with acetone stock solution of 100μg/mL using When diluted to the appropriate concentration of the mixed standard working solution as needed with ethyl acetate. 3.7 activated carbon SPE. 3mL activated charcoal column (SUPELCO or equivalent person).

4 instruments and equipment

4.1 Gas chromatograph. equipped with a flame photometric detector (FPD), phosphorus filter (526nm). 4.2 Rapid Mixer. 4.3 Centrifuge. 3000r/min. 4.4 Multifunction trace of sample handling devices or other equivalent instrument. 4.5 plug graduated centrifuge tube. 5mL, 10mL. 4.6 glass tubes. 10mL. 4.7 beak straw.

5 Sample Preparation and Storage

5.1 Sample Preparation Take a representative sample 500g, crushed with a grinder and sieve through a 2.0mm hole. Mixing, are divided into two as a sample, dispense into ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of SN/T 1950-2007_English be delivered?

Answer: Upon your order, we will start to translate SN/T 1950-2007_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of SN/T 1950-2007_English with my colleagues?

Answer: Yes. The purchased PDF of SN/T 1950-2007_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.