食品科学 ›› 2009, Vol. 30 ›› Issue (10): 228-230.doi: 10.7506/spkx1002-6630-200910053

• 分析检测 • 上一篇    下一篇

微波消解ICP-AES法测定代用茶桂花产品中的铁锌铜锰

阳文琼1,邓振平2,*   

  1. 1. 桂林市产品质量监督检验所
    2. 中国地质科学院岩溶地质研究所
  • 收稿日期:2008-08-13 修回日期:2008-11-14 出版日期:2009-05-15 发布日期:2010-12-29
  • 通讯作者: 邓振平 E-mail:dengzhenping@sina.com
  • 基金资助:

    中国地质调查项目(200310400043);中国地质科学院岩溶所所长基金项目(2005-05)

Microwave Digestion-Inductively Coupled Plasma Atomic Emission Spectrometric (ICP-AES) Determination of Iron, Zinc, Copper and Manganese in Osmanthus fragrans Flower Tea Substitute

YANG Wen-qiong1,DENG Zhen-ping2,*   

  1. (1. Guilin Products Quality Supervision and Inspection Institute, Guilin 541002, China;
    2. Institute of Karst Geology, Chinese Academy of Geological Sciences, Guilin 541004, China)
  • Received:2008-08-13 Revised:2008-11-14 Online:2009-05-15 Published:2010-12-29
  • Contact: DENG Zhen-ping2,* E-mail:dengzhenping@sina.com

摘要:

建立微波消解- 电感藕合等离子发射光谱(ICP-AES)测定代用茶产品桂花中铁(Fe)、锌(Zn)、铜(Cu)和锰(Mn)的方法,并对ICP-AES 工作参数及条件进行优化和选择。Fe 检出限为:1.6 × 10-3mg/L,Zn 检出限为:6.1 × 10-3mg/L,Cu 检出限为:2.5 × 10-3mg/L,Mn 检出限为:5.3 × 10-3mg/L;Fe 线性范围为:0.0~20.0mg/L,Zn、Cu、Mn线性范围均为:0.0~5.0mg/L;加标回收率为:95%~105%;方法的相对标准偏差为:0.88%~2.74%(n=12)。本法适用于代用茶产品桂花中的铁、锌、铜和锰含量的日常测定。

关键词: 微波消解, ICP-AES, 代用茶桂花产品, 铁, 锌, 铜,

Abstract:

A method was developed for simultaneous determination of multi-elements, such as Fe, Zn, Cu, and Mn in Osmanthus fragrans flower tea substitute by microwave digestion-ICP-AES. The parameters and working conditions of ICP-AES were optimized in this study. The results showed that the detection limits of Fe, Zn, Cu, and Mn were 1.6 × 10-3, 6.1 × 10-3, 2.5 × 10-3 and 5.3×10-3 mg/L, respectively. And the linear ranges were 0.0 to 20.0 mg/L, 0.0 to 5.0 mg/L, 0.0 to 5.0 mg/L, and 0.0 to 5.0 mg/L, respectively. The spike recoveries were 95% to 105% and the relative standard deviations (RSDs) were 0.88% to 2.74% (n = 12). This method is suitable for determining Fe, Zn, Cu, and Mn in Osmanthus fragrans flower tea substitute.

Key words: microwave digestion, ICP-AES, Osmanthus fragrans flower tea substitute, Fe, Zn, Cu, Mn

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