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COMMITTEE DRAFT
ISO/CD 15151 | IDF 229
© ISO 2010
–
All rights reserved
1
Milk and milk products — Determination of calcium, copper,
iron, magnesium, manganese, phosphorus, potassium, sodium
and zinc contents - Inductive coupled plasma atomic emission
spectrometric method (ICP-AES)
WARNING —
The use of this International Standard may involve hazardous materials, operations
and reagents. This standard does not propose to address all the safety problems associated with its
use. It is the responsibility of the user of this standard to establish safety and health practices and
determine the applicability of regulatory limitations prior to use.
1 Scope
This International Standard specifies an inductively coupled plasma atomic emission spectrometric method for
the determination of calcium, copper, iron, magnesium, manganese, phosphorus, potassium, sodium, and
zinc contents in milk and milk products.
The method is applicable for milk, dried milk, cheese, whey, dried whey and infant formula.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
ISO 5725-1.
Accuracy (trueness and precision) of measurement methods and results.
Part 1
: General
principles and definitions.
ISO 5725-2.
Accuracy (trueness and precision) of measurement methods and results
. Part 2
: Basic method
for the determination of repeatability and reproducibility of a standard measurement method.
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1 Calcium, copper, iron, magnesium, manganese, phosphorus, potassium, sodium, and
zinc contents
mass fraction of substances determined by the procedure specified in this International
Standard.
NOTE
The contents of calcium, magnesium, phosphorus, potassium and sodium are expressed in gram per kilogram.
Those for copper, iron, manganese and zinc are expressed in milligram per kilogram.
4 Principle
The organic matter is decomposed by wet digestion using nitric acid in a pressurized microwave
assisted wet digestion system or any appropriate instrumentation in wet digestion and diluted. The test
MTE-03 Addendum
FOR ERP USE ONLY
DO NOT DISTRIBUTE