Standard No.:	GB/T 14609-2008
English Name:	Inspection of grain and oils—Determination of copper,iron,manganese,zinc,calcium,magnesium in cereals and derived products by atomic absorption and flame spectrophotometry
Chinese Name:	粮油检验 谷物及其制品中铜、铁、锰、锌、钙、镁的测定 火焰原子吸收光谱法
Chinese Classification:	B20    Cereal crop and forage crop in general
Professional Classification:	GB    National Standard
Issued by:	AQSIQ; SAC
Issued on:	1993-09-05
Implemented on:	2009-1-20
Status:	superseded
Superseded by:	GB 5009.92-2016 National Food Safety Standard-Determination of Calcium in Foods GB 5009.90-2016 National Food Safety Standard-Determination of Iron in Foods GB 5009.13-2017 National food safety standard -- Determination of copper in foods GB 5009.14-2017 Food safety national standard -- Determination of Zinc in Food GB 5009.242-2017 Food safety national standard -- Determination of manganese in food GB 5009.241-2017 Food safety national standard -- Determination of magnesium in food
Superseded on:	2017-10-6
Superseding:	GB/T 14609-1993 Method for determination of Cu, Fe, Mn, Zn, Ca, Mg in cereals by atomic absorption spectrophotometry
Language:	English
File Format:	PDF
Word Count:	3500 words
Price(USD):	100.00
Delivery:	via email in 1~3 business day

本标准代替GB/T 14609-1993 《谷物中铜、铁、锰、锌、钙、镁的测定法　原子吸收法》。
本标准规定了用火焰原子吸收光谱法测定谷物及其制品中铜、铁、锰、锌、钙、镁的原理、试剂、仪器与设备、分析步骤、结果计算和重复性。
本标准适用于谷物及其制品中铜、铁、锰、锌、钙、镁等元素的测定。
本方法检出限：铜为0.6mg/kg，铁为2.4mg/kg，锰为0.5mg/kg，锌为0.4mg/kg，钙为1.5mg/kg，镁为0.7mg/kg。
本标准与GB/T 14609-1993 相比，主要技术差异如下：
———修改了标准的中文名称，改为《粮油检验　谷物及其制品中铜、铁、锰、锌、钙、镁的测定　火焰
原子吸收光谱法》；
———增加了方法检出限；
———增加了湿式消解和微波消解两种样品前处理方法。