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

doi:10.7506/spkx1002-6300-201008030

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

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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*

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

Abstract

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

CLC Number:

TS264.4

LI Yin-ping，GUAN Ming，DU Wei-jun，LIU Cong，MALIKE Diliner*. Determination of Trace Metal Elements in Fruits of Rosa multiflora Thunb Using Microwave Digestion Followed by Flame Atomic Absorption Spectrophotometry[J]. FOOD SCIENCE, 2010, 31(8): 143-145.

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

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