正方面积公式是什么婴幼儿配方奶粉中8种常微量元素分析方法的研究

2020年11月4日发(作者：卜兆颐)
龙源期刊网 http:
婴幼儿配方奶粉中8种常微量元素分析方法
的研究

作者：范芳芳 魏宁果 边文文

来源：《农产品加工·上》2019年第04期

摘要：采用湿法消 解（电热板消解法）、干式消解法（灰发化）和微波消解法对婴幼儿乳
粉样品进行前处理，建立电感耦合 等离子体发射光谱仪（ICP- OES）同时测定待测样品中8种
常微量元素的方法。结果表明，采用微波消解-电感耦合等离子发射光 谱仪测定婴幼儿乳粉样
品中8种常微量元素的方法各元素的平均含量较高，相对标准偏差（RSD）最小 ，且小于
2.05%。该方法对质控样品中各元素的相对标准偏差（RSD）均小于2%，回收率在84 .6%～
103.5%。
关键词： 婴幼儿乳粉；常微量元素；湿法消解；干式消解；微波消解；电感耦合等离子
光谱仪
中图分类号：TS207.3 文献标志码：A doi：.1671-9646（X）.2019.04.016
Study on the Methods of 8 Kinds of Macroelement and Microelement
in Infant Milk Powder
FAN Fangfang，WEI Ningguo，*BIAN Wenwen
（Shaanxi Institute of Supervision & Testing on Product Quality，Xi'an，Shaanxi 710048，
China）
Abstract：In this paper，wet digestion（electrothermal plate digestion），drying（graying）
and microwave digestion were used to preprocess infant milk powder samples. 8 elements of
macroelement and microelement in the samples under test was established by inductively coupled
plasma atomicemission spectroscopy. The results indicated that the average content of 8 kinds of
elements in infant milk powder was the highest by microwave digestion. And the relative standard
deviation（RSD）of this method is the smallest. The results were less than 2.05%. The relative
standard deviation（RSD）of all elements in the quality control samples by microwave digestion was
less than 2%，and the recovery rate was 84.6%～103.5%.
Key words：infant milk powder；macroelement and microelement；wet digestion；ash
digestion；microwave digestion；inductively coupled plasma atomicemission spectroscopy
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