Foreword
This standard replaces the part related to determination of manganese in GB/T 5009.90-2003 “Determination of iron, magnesium and manganese in foods”, GB 5413.21-2010 “National food safety standard-Determination of calcium, iron, zinc, sodium, potassium, magnesium, copper and manganese in foods for infants and young children, milk and milk products”, GB/T 14609-2008 “Inspection of grain and oils-Determination of copper, iron, manganese, zinc, calcium, magnesium in cereals and derived products by atomic absorption and flame spectrophotometry”, GB/T 23545-2009 “Determination of manganese in white wine-Inductively coupled plasma atomic emission spectrometry”, GB/T 18932.11-2002 “Method for the determination of potassium, phosphorus, iron, calcium, zinc, aluminum, sodium, magnesium, boron, manganese, copper, barium, titanium, vanadium, nickel, cobalt and chromium contents in honey-Inductively coupled plasma atomic emission spectrometric method”, GB/T 18932.12-2002 “Method for the determination of potassium, sodium, calcium, magnesium, zinc, iron, copper, manganese, chromium, lead, cadmium contents in honey-Atomic absorption spectrometry” and NY/T 1653-2008 “Determination for mineral elements in vegetables, fruits and derived products by ICP-AES method”.
Compared with the above standards, the major changes of this standard are as follows:
——the standard name has been revised to “National food safety standard-Determination of manganese in foods”;
——the partial contents of test sample preparation have been revised;
——the partial contents of test sample digestion have been revised;
——the inductively coupled plasma emission spectrometry has been revised as Method II and the inductively coupled plasma mass spectrometry has been revised as Method III;
——the limit of detection and limit of quantification for the method have been added;
——the annex has been added.