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

doi:10.7506/spkx1002-6630-200910053

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

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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. 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

Abstract

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

CLC Number:

TS207.3

YANG Wen-qiong1，DENG Zhen-ping2,*. Microwave Digestion-Inductively Coupled Plasma Atomic Emission Spectrometric (ICP-AES) Determination of Iron, Zinc, Copper and Manganese in Osmanthus fragrans Flower Tea Substitute[J]. FOOD SCIENCE, 2009, 30(10): 228-230.

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

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