GB/T 22730-2008 English PDFUS$189.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 22730-2008: Determination of chloroform in toothpaste -- Gas chromatography Status: Valid
Basic dataStandard ID: GB/T 22730-2008 (GB/T22730-2008)Description (Translated English): Determination of chloroform in toothpaste -- Gas chromatography Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: Y43 Classification of International Standard: 71.100.40 Word Count Estimation: 8,836 Date of Issue: 2008-12-31 Date of Implementation: 2009-08-01 Quoted Standard: GB/T 6379.2 Regulation (derived from): National Standard Approval Announcement 2008 No.24 (Total No.137) Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China Summary: This standard specifies the method for the determination of chloroform in toothpaste. This standard applies to the determination of chloroform in toothpaste. The lower limit of determination of the method of chloroform: 0. 50 mg/kg. GB/T 22730-2008: Determination of chloroform in toothpaste -- 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 chloroform in toothpaste. Gas chromatography ICS 71.100.40 Y43 National Standards of People's Republic of China Determination of chloroform in toothpaste Gas chromatography Posted 2008-12-31 2009-08-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released ForewordThe Standard Appendix A, Appendix B are informative appendices. This standard is proposed and managed by the National Certification and Accreditation Administration Committee. This standard was drafted. Chinese Academy of Inspection and Quarantine. The main drafters of this standard. Wang Chao, Wang Xing, Mikoto season, Hao Nan. Determination of chloroform in toothpaste Gas chromatography1 ScopeThis standard specifies the method for the determination of chloroform in toothpaste. This standard applies to the determination of chloroform in toothpaste. Determination of the lower limit of the method chloroform. 0.50mg/kg.2 Normative referencesThe following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard. GB/T 6379.2 measurement methods and results of Accuracy (trueness and precision) - Part 2. Determine the standard measurement method to repeat Of the basic methods of reproduction (GB/T 6379.2-2004, ISO 5725-2.1994, IDT) Principle 3 Methanol as solvent, ultrasonic extraction, centrifugation, the solution is injected into the headspace sampler is equipped with an electron capture detector (ECD) of the gas chromatograph Detection, external standard. If necessary, gas chromatography - mass spectra.4 Reagents and materialsUnless otherwise specified, reagents were of analytical grade. 4.1 Methanol. chromatographically pure. 4.2 chloroform. chromatography. 4.3 chloroform standard stock solution. Weigh accurately 0.1g (accurate to 0.0001g) in chloroform 100mL volumetric flask with methanol To volume, that is, too chloroform at a concentration of standard stock solution 1mg/mL of. Stock solution stored at 4 ℃ refrigerator, you can use two months. 4.4 standard solution chloroform. methanol above stock solution (4.3) respectively dubbed chloroform at a concentration of 0.01μg/mL, 0.05μg/mL, 0.1μg/mL, 0.5μg/mL, standard solution 1μg/mL, and stored at 4 ℃, can be used for one week.5 Instruments5.1 Gas chromatograph. equipped with electron capture detector (ECD). 5.2 Gas chromatograph. with a mass selective detector (MSD). 5.3 Analysis of balance. a sense of the amount of 0.0001g. 5.4 ultrasonic cleaning. 5.5 air injector. 5.6 bottles. 20mL.6 Determination6.1 Sample Preparation Weigh the test toothpaste 1.0g (accurate to 0.001g), placed in the vial, accurate methanol was added 9.0mL, shake gently after sealed, ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 22730-2008_English be delivered?Answer: Upon your order, we will start to translate GB/T 22730-2008_English as soon as possible, and keep you informed of the progress. 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