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SN/T 2934-2011: Determination of polycyclic aromatic hydrocarbons and heavy metal in imported and exported waxed waterproof paper
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SN/T 2934-2011	English	449	Add to Cart	3 days [Need to translate]	Determination of polycyclic aromatic hydrocarbons and heavy metal in imported and exported waxed waterproof paper

SN/T 2934-2011: Determination of polycyclic aromatic hydrocarbons and heavy metal in imported and exported waxed waterproof paper

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Determination of polycyclic aromatic hydrocarbons and heavy metal in imported and exported waxed waterproof paper People's Republic of China Entry-Exit Inspection and Quarantine Standards Importers Baptist waterproof wax paper and polycyclic aromatic hydrocarbons Determination of Heavy Metal Issued on. 2011-05-31 2011-12-01 implementation People's Republic of China The State Administration of Quality Supervision, Inspection and Quarantine released

Foreword

This standard was drafted in accordance with GB/T 1.1-2009 given rules. This standard is proposed and managed by the National Certification and Accreditation Administration Committee. This standard was drafted. People's Republic of China Jiangsu Entry-Exit Inspection and Quarantine Bureau, People's Republic of China Tianjin Entry-Exit Inspection and Quarantine Bureau, People's Republic of China, Changzhou import and export of industrial and consumer product safety testing center. The main drafters of this standard. Tang Lijun, Wang Hongsong, Lining Tao, Zhu Yan, Chen. Importers Baptist waterproof wax paper and polycyclic aromatic hydrocarbons Determination of Heavy Metal

1 Scope

This standard specifies the import and export Baptist wax waterproof paper polycyclic aromatic hydrocarbons and heavy metals (arsenic, lead, cadmium, chromium, barium, selenium, antimony and mercury) detection methods. This standard applies to the determination of import and export Baptist wax waterproof paper polycyclic aromatic hydrocarbons and heavy metals (arsenic, lead, cadmium, chromium, barium, selenium, antimony and mercury) in.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated edition applies to this file. For undated references, the latest edition (including any amendments) applies to this document. Preparation of standard solution of GB/T 602 Determination of impurities in chemical reagents Laboratory use specifications and test methods GB/T 6682 Analysis

3 Terms and Definitions

The following terms and definitions apply to this document. 3.1 Baptist waterproof wax paper waxedwaterproofpaper Wax-treated surface is waterproof paper. 3.2 PAHs polycyclicaromatichydrocarbons Molecular structure having two or more benzene rings organics. NOTE. The standard method of PAHs especially US EPA designated priority monitoring of 16 PAHs details, see Appendix A Table A.1. 4 Imports & Exports dipped wax Determination of PAHs in waterproof paper 4.1 Principle Shredded samples were extracted with hexane acetone (11) mixed solvent ultrasonic extraction. After the extract was filtered by solid phase extraction column adsorption, with n Hexane-dichloromethane (1 1) mixed solvent as eluent. Eluate and dilute nitrogen blowing backward gas chromatography - mass spectrometry analysis, External standard. 4.2 Reagents and materials Unless otherwise specified, the reagents used were of analytical grade. 4.2.1 n-hexane. HPLC grade. 4.2.2 acetone. HPLC grade. 4.2.3 dichloromethane. HPLC grade. 4.2.4 hexane acetone (11). An equal volume of hexane (4.2.1) and acetone (4.2.2) after mixing aside. 4.2.5 n-hexane in dichloromethane (11). Once the volume of n-hexane (4.2.1) and dichloromethane (4.2.3) mixed and set aside. ...