Standard No.:	GB/T 13885-2003
Chinese Name:	动物饲料中钙、铜、铁、镁、锰、钾、钠和锌含量的测定 原子吸收光谱法
English Name:	Animal feeding stuffs—Determination of thecontents of calcium,copper,iron,magnesium,manganese,potassium,sodium and zinc—Method using atomic absorption spectrometry
Professional Classification:	B46 Livestock and poultry feed and additive
Professional Classification:	GB National Standard
ICS Classification:	65.120
Issued by:
Issued on:	1992-01-01
Implemented on:	2004-05-01
Status:	ABOLISHED
Replace By:	GB/T13885-2017 Determination of the contents of calcium,copper,iron,magnesium,manganese,potassium,sodium and zinc in feeds—Method using atomic absorption spectrometry
Replace By Date:	2018-05-01
Language:	English
File Format:	PDF
Word Count:
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1 Scope

This standard specifies an atomic absorption spectrometric method for the determination of the contents of calcium (Ca), copper (Cu), iron (Fe), magnesium (Mg), manganese (Mn), potassium (K), sodium (Na) and zinc (Zn) in animal feeding stuffs.
The limit of determination for the elements concerned is as follows:
K, Na: 500 mg/kg;
Ca, Mg: 50mg/kg;
Cu, Fe, Mn Zn: 5 mg/kg.
The method is applicable to all animal feeding stuffs.

2 Normative References

The following normative documents contain provisions which, through reference in this text, constitute provisions of this International Standard. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative documents referred to applies.
GB/T 6682-1992 Water for laboratory use — Specifications (neq ISO 3696:1987)
ISO 6497 Animal feeding stuffs — Sampling
ISO 6498 Animal feeding stuffs — Preparation of test samples

3 Principle