Standard No.:	GB 31604.34-2016
English Name:	National Food Safety Standard - Food Contact Materials and Articles - Determination of Lead and Its Migration
Chinese Name:	食品安全国家标准 食品接触材料及制品 铅的测定和迁移量的测定
Professional Classification:	GB    National Standard
Issued by:	National Health and Family Planning Commission
Issued on:	2016-10-19
Implemented on:	2017-4-19
Status:	superseded
Superseded by:	SN/T 2597-2010 Determination of lead,cadmium,chromium,arsenic,antimony,germanium migration quantity in polymer for food contact materials—Inductively coupled plasma atomic emission spectrometry method GB/T 21170-2007 Glass hollowware—Test method for lead and cadmium release
Superseded on:	2008-4-1
Superseding:	GB/T 5009.62-2003 Method for analysis of hygienic standard of ceramics for food containers GB/T 5009.63-2003 Method for analysis of hygienic standard of enamel for food containers GB/T 5009.72-2003 Method for Analysis of Hygienic Standard of Aluminum-wares for Food Use GB/T 5009.78-2003 Method for analysis of hygienic standard of papers for food packaging GB/T 5009.81-2003 Method for Analysis of Hygienic Standard of Stainless Steel Food Containers and Table Wares GB/T 3534-2002 STANDARD testing methods for lead and cadmium release from domestic ceramic GB 8058-2003 Standard permissible limits and testing method for release of lead or cadmium from ceramic cookware GB/T 21170-2007 Glass hollowware—Test method for lead and cadmium release SN/T 2597-2010 Determination of lead,cadmium,chromium,arsenic,antimony,germanium migration quantity in polymer for food contact materials—Inductively coupled plasma atomic emission spectrometry method SN/T 2829-2011 Food Contact Materials for Export - Metal Materials - Determination of Migrant Heavy Metals in Food Simulant - Inductively Coupled Plasma Atomic Emission Spectrometric Method SN/T 2886-2011 SN/T 2594-2010 Food contact materials—Determination of lead,cadmium,chromium,and arsenic in cork stoppers by inductively coupled plasma mass spectrometry
Language:	English
File Format:	PDF
Word Count:	5000 words
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1 Scope This standard specifies graphite furnace atomic absorption spectrometry, inductively coupled plasma mass spectrometry, inductively coupled plasma emission spectrometry and flame atomic absorption spectrometry for the determination of lead migration in food contact materials and articles after soaking in food simulants after being soaked in food simulants and determination of lead in paper products and corks. This standard is applicable to the determination of lead migration in food contact materials and articles and lead in paper products and corks. Part I Determination of Lead Method I Graphite Furnace Atomic Absorption Spectrometry 2 Principle Digest the paper product and cork with dry method after grinding, atomize the digestion solution through graphite furnace. Within certain concentration range, absorption value is in direct proportion to lead content at 283.3nm, and is compared with standard series for quantification. 3 Reagents and Materials Unless otherwise specified, guaranteed reagents and Class-II water (defined in GB/T 6682) are adopted for the purpose of this method. 3.1 Reagents 3.1.1 Nitric acid (HNO3). 3.1.2 Ammonium dihydrogen phosphate (NH4H2PO4). 3.1.3 Palladium nitrate [Pd(NO3)2]. 3.2 Preparation of reagents

Foreword i 1 Scope 2 Principle 3 Reagents and Materials 4 Instruments and Apparatus 5 Analysis Steps 6 Expression of Analysis Results 7 Accuracy 8 Other 9 Principle 10 Reagents and Materials 11 Instruments and Apparatus 12 Analysis Steps 13 Expression of Analysis Results 14 Accuracy 15 Other 16 Principle 17 Reagents and Materials 18 Instruments and Apparatus 19 Analysis Steps 20 Expression of Analysis Results 21 Accuracy 22 other Annex A Reference Temperature Rise Procedures of Graphite Furnace Atomic absorption Spectrometer Annex B Operating Reference Conditions of Flame Atomic Absorption Spectrometer