1 Scope
This standard specifies the inductively coupled plasma-mass spectrometry (ICP-MS) and inductively coupled plasma atomic emission spectrometry (ICP-AES) for the determination of multi-elements in foods.
Method I is applicable to the determination of boron, sodium, magnesium, aluminum, potassium, calcium, titanium, vanadium, chromium, manganese, iron, cobalt, nickel, copper, zinc, arsenic, selenium, strontium, molybdenum, cadmium, tin, stibium, barium, mercury, thallium and lead contents in foods; Method II is applicable to the determination of aluminum, boron, barium, calcium, copper, iron, potassium, magnesium, manganese, sodium, nickel, phosphorus, strontium, titanium, vanadium and zinc contents in foods.
Method I Inductively Coupled Plasma-mass Spectrometry (ICP-MS)
2 Theory
Use inductively coupled plasma-mass spectrometer to determine the content in the sample after digestion, conduct the quantitative analysis with specific mass number (mass-to-charge ratio, m/z) and conduct quantitative analysis in external standard method with that the strength ratio of mass spectrum signals of to-be-determined elements and internal standard element in direct proportion to the concentration of to-be-determined elements.
3 Reagents and Materials
Foreword I
1 Scope
2 Theory
3 Reagents and Materials
4 Apparatuses
5 Analytical Procedures
6 Expression of Analysis Results
7 Precision
8 Others
9 Theory
10 Reagents and Materials
11 Apparatuses
12 Analytical Procedures
13 Expression of Analysis Results
14 Precision
15 Others
Annex A Mass Concentration of Standard Solution Series
Annex B Reference Conditions of Apparatuses
