奶粉中营养元素检测方法的研究进展

Progress on the determination method of nutritional elements in milk powder

中文关键词:  奶粉  营养元素  检测方法  电感耦合等离子体质谱法

英文关键词:milk powder  nutritional elements  test method  inductively coupled plasma mass spectrometry

中文摘要:

      奶粉中营养元素的检测是奶粉质量检验的重要组成部分。目前奶粉中营养元素主要有钾、钙、钠、镁、铁、锌、铜、锰、磷、硒、碘元素, 各元素的样品前处理方法不一, 采用的检测方法使用的分析仪器不同, 从而导致检验时间长, 与此同时经过学者们的深入研究探索, 有部分元素可用同一种前处理方法和同一种分析仪器进行同时测定, 从而大大缩短了检验时间, 因此奶粉中多元素的同时检测一直是奶粉分析检测领域的重点研究对象。本文着重论述目前国内外婴幼儿奶粉中营养元素的检测方法研究进程, 阐述各种方法的基本原理, 并对多元素同时测定的样品前处理方法和仪器分析方法进行总结, 提出了开展研究微波酸消解样品代替其他前处理方法, 采用电感耦合等离子体质谱法(inductively coupled plasma mass spectrometry, ICP-MS)同时测定奶粉中营养元素的新趋势。

英文摘要:

      It is an important part of milk powder quality inspection for the detection of nutritional elements in milk powder. At presents, the nutrients in milk powder mainly include potassium, calcium, sodium, magnesium, iron, zinc, copper, manganese, phosphorus, selenium and iodine. Because of the different of the sample pretreatment methods of each element, the different of the analytical instruments are used in the detection methods, leading to a long test time. At the same time, through the in-depth research and exploration of researchers, it can be determined for some elements by the same pretreatment method and the same analytical instrument at the same time, which greatly shortens the test time. Therefore, it will be key research objects in the field of milk powder analysis and detection for the simultaneous detection of multiple elements in milk powder. The research progress of the method of the determination of nutritional elements in infant milk powder at home and abroad was reviewed, and the basic principle of various methods was expatiated. The pretreatment methods and determination methods of nutritional elements in infant milk powder were summarized. The new trend of studying microwave acid-digestion of samples instead of other pretreatment methods was put forward, and the application range of inductively coupled plasma mass spectrometry (ICP-MS) in the detection of nutritional elements in milk powder was further expanded.