食品科学 ›› 2010, Vol. 31 ›› Issue (8): 143-145.doi: 10.7506/spkx1002-6300-201008030

• 分析检测 • 上一篇    下一篇

微波消解- 火焰原子吸收法测定新疆野蔷薇果中金属元素

李茵萍,关 明,杜为军,刘 从,迪丽努尔·马里克*   

  1. 新疆师范大学生命科学与化学学院
  • 收稿日期:2009-06-16 出版日期:2010-04-15 发布日期:2010-12-29
  • 通讯作者: 迪丽努尔·马里克 E-mail:pkudilnur@yahoo.com.cn
  • 基金资助:

    国家自然科学基金项目(20865004)

Determination of Trace Metal Elements in Fruits of Rosa multiflora Thunb Using Microwave Digestion Followed by Flame Atomic Absorption Spectrophotometry

LI Yin-ping,GUAN Ming,DU Wei-jun,LIU Cong,MALIKE Diliner*   

  1. College of Life Sciences and Chemistry, Xinjiang Normal University, Urumuqi 830054, China
  • Received:2009-06-16 Online:2010-04-15 Published:2010-12-29
  • Contact: LIU Cong,MALIKE Diliner E-mail:pkudilnur@yahoo.com.cn

摘要:

采用HNO3 消解体系对野蔷薇果进行程序升温微波消解制样,应用火焰原子吸收法测定野蔷薇果中的Ca、K、Mn、Zn、Mg、Fe、Cu、Na、Cr、Ni、Sr 共11 种金属元素的含量。对样品前处理条件进行筛选,确定样品适合的微波消解体系并进行消化结果的准确度和精密度实验。该方法的加标回收率为96.50%~104.50%,相对标准偏差(RSD)≤ 3.21%。结果表明,新疆野蔷薇果中富含Ca、Mg、K、Na、Mn、Fe 等对人体有益的金属元素,而Cr、Ni 等金属元素的含量较低。

关键词: 火焰原子吸收法, 微波消解, 野蔷薇果, 微量元素

Abstract:

A flame atomic absorption spectrophotometric (FAAS) method based on microwave digestion was proposed for the determination of 11 trace metal elements (Ca, K, Mn, Zn, Mg, Fe, Cu, Na, Cr, Ni and Sr) in the fruits of Rosa multiflora Thunb grown in Xinjiang autonomous region. Temperature programmed rise was used for the microwave digestion of samples. The optimal digestion solvent was nitric acid. The proposed method exhibited good accuracy and precision. Spike recoveries of 11 trace metal elements in a real sample were within the range of 96.50%-104.50%, with relative standard deviations (RSDs) of no more than 3.21%. Actual determinations demonstrate that the fruits of Rosa multiflora Thunb grown in Xinjiang autonomous region are rich in Ca, Mg, K, Na, Mn and Fe beneficial for health and contain small amounts of Cr and Ni.

Key words: FAAS method, microwave digestion, fruits of Rosa multiflora Thunb, trace element

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