|
US$579.00 · In stock
Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email.
SN/T 2158-2008: Determination of chlorpyrifos residue in foods for import and export
Status: Valid
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| SN/T 2158-2008 | English | 579 |
Add to Cart
|
4 days [Need to translate]
|
Determination of chlorpyrifos residue in foods for import and export
| Valid |
SN/T 2158-2008
|
PDF similar to SN/T 2158-2008
Basic data | Standard ID | SN/T 2158-2008 (SN/T2158-2008) | | Description (Translated English) | Determination of chlorpyrifos residue in foods for import and export | | Sector / Industry | Commodity Inspection Standard (Recommended) | | Classification of Chinese Standard | C53 | | Classification of International Standard | 67.050 | | Word Count Estimation | 22,230 | | Date of Issue | 2008-09-04 | | Date of Implementation | 2009-03-16 | | Regulation (derived from) | Industry standard filing Notice No. 11 of 2008 | | Issuing agency(ies) | General Administration of Customs | | Summary | This standard specifies the import and export of chlorpyrifos residues in food by gas chromatography and gas chromatography mass spectrometry confirmatory method. This standard applies to corn, brown rice, green onions, spinach, peppers, oranges, apples, peanuts, pine nuts, tea, fish, honey, pork, chicken kidneys and livers of chlorpyrifos residues detection and confirmation. | SN/T 2158-2008: Determination of chlorpyrifos residue in foods for import and export---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 chlorpyrifos residue in foods for import and export
Exit inspection and quarantine industry standard book People's Republic of China
Importers chlorpyrifos residues in food
Detection method
Posted 2008-09-04
2009-03-16 implementation
People's Republic of China
The State Administration of Quality Supervision, Inspection and Quarantine released
Foreword
The Standard Appendix A, Appendix B and Appendix C are informative appendices.
This standard is proposed and managed by the National Certification and Accreditation Administration Committee.
This standard was drafted. Jilin People's Republic of China Entry-Exit Inspection and Quarantine of Hunan People's Republic of China
Bureau, the Shenzhen People's Republic of China Exit Inspection and Quarantine.
The main drafters of this standard. Li Aijun, Wang Mingtai, Mou Jun, Huang Zhiqiang, Xieli Qi, Xiao.
This standard is the first release of the entry-exit inspection and quarantine industry standards.
Importers chlorpyrifos residues in food
Detection method
1 Scope
This standard specifies the import and export of food in gas chromatography and gas chromatography of chlorpyrifos - and MS methods.
This standard applies to corn, brown rice, green onions, spinach, peppers, oranges, apples, peanuts, pine nuts, tea, fish, honey, pork, chicken kidneys,
Chlorpyrifos residues in chicken liver testing and confirmation.
2 Method summary
Experiment with ethyl acetate or water - acetone extraction, liquid-liquid partition extraction by SPE purification or gel chromatography, gas chromatography flame
Photometric detector and quantified by external standard; positive samples by gas chromatography - mass spectrometry confirmed.
3 Reagents and materials
Unless otherwise specified, the reagents were of analytical grade, double distilled water.
3.1 acetone. residual level.
3.2 dichloromethane. residual level.
3.3 Cyclohexane. Residual level.
3.4 ethyl acetate. residual level.
3.5 hexane. Residual level.
3.6 sodium chloride.
3.7 anhydrous sodium. 650 ℃ burning 4h, stored in a sealed container in the back.
3.8 aqueous sodium chloride solution (5%). Weigh 5.0g of sodium chloride dissolved in water, and dilute to 100mL.
3.9 ethyl acetate - n-hexane to (1 + 1, volume ratio). Measure 100mL 100mL of ethyl acetate and hexane, and mix.
3.10 cyclohexane - ethyl acetate. (1 + 1, volume ratio). amount of 100mL and 100mL cyclohexane, n-hexane, and mix.
3.11 chlorpyrifos standard (Chlorpyrifos, C9H11C13NO3PS, CASN o.2921-88-2). purity greater than or equal to 98%.
3.12 chlorpyrifos standard stock solution. accurately weighed amount of chlorpyrifos standards, formulated with ethyl acetate to a concentration of 100μg/mL of
Standard stock solution. The solution was stored at 0 ℃ ~ 4 ℃ refrigerator.
3.13 chlorpyrifos standard solution. as needed chlorpyrifos standard stock solution (3.12) diluted to a suitable concentration standard with ethyl acetate
Quasi working solution. The solution was stored at 0 ℃ ~ 4 ℃ refrigerator.
3.14 fluoro Rory silica SPE column. Florisil, 500mg, 6mL, or equivalent person.
3.15 GCB SPE. ENVI-Carb, 250mg, 6mL, or equivalent person.
3.16 microporous membrane. 0.45μm.
3.17 GCB. 60 mesh to 80 mesh.
4 instruments and equipment
4.1 Gas chromatograph. equipped with a flame photometric detector (FPD), a wavelength of 526nm.
4.2 Gas chromatography - mass spectrometry. source with electron impact (EI).
4.3 Electronic balance. a sense of volume to the nearest 0.0001g.
4.4 gel chromatograph. with unit pumps, fraction collectors.
Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of SN/T 2158-2008_English be delivered?Answer: Upon your order, we will start to translate SN/T 2158-2008_English as soon as possible, and keep you informed of the progress. The lead time is typically 2 ~ 4 working days. The lengthier the document the longer the lead time. Question 2: Can I share the purchased PDF of SN/T 2158-2008_English with my colleagues?Answer: Yes. The purchased PDF of SN/T 2158-2008_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+ countriesQuestion 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 [email protected]. 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.
|