Foreword

This standard replaces GB/T 5009.29-2003 “Determination of sorbic acid and benzioc acid in foods”, GB/T 5009.28-2003 “Determination of saccharin sodium in foods”, GB/T 23495-2009 “Determination of benzoic acid, sorbic acid and saccharin sodium in foods - High performance liquid chromatography method”, GB 21703-2010 “National food safety standard Determination of benzoic acid and sorbic acid in milk and milk products”, SN/T 2012-2007 “Determination of benzoic acid and sorbic acid in vinegar for export and import - Liquid chromatography” and SB/T 10389-2004 “Determination of sorbic acid in meat and meat products”.

Compared with GB/T 5009.29-2003, major changes of this standard are as follows:

——the standard name has been revised to “National food safety standard Determination of benzoic acid, sorbic acid and saccharin sodium in foods”;

——the plotting of standard curve by the “multi-point correction” method has been added;

——the sample pre-treatment method has been revised;

——the contents of packing column separation in the gas chromatography have been deleted;

——the contents of capillary column separation in the gas chromatography have been added.