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作者:

Ren Ting (Ren Ting.) | Zhao Li-jiao (Zhao Li-jiao.) (学者:赵丽娇) | Zhong Ru-gang (Zhong Ru-gang.) (学者:钟儒刚)

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EI Scopus SCIE PKU CSCD

摘要:

The contents of aluminum (Al) in four kinds of wheat flour food (noodle, dumpling wrapper, twisted cruller and soda biscuit) were determined by high resolution continuum source graphite furnace atomic absorption spectrometry (HR-CS GFAAS) combined with microwave digestion. The samples were completely digested by the mixture of HNO3 and H2O2 in closed polytetrafluoroethylene (PTFE) vessels. The conditions for microwave digestion, pyrolysis temperature and atomization temperature were optimized. The optimum experimental conditions were determined as follows. The microwave digestion was performed with HNO3/H2O2 7 : 1 (volume ratio), microwave power 1 000 W and 190 degrees C for 40 minutes. The optimum pyrolysis temperature was 1 350 degrees C and the optimum atomization temperature was 2 400 degrees C. Magnesium nitrate solution with the concentration of 1 g . L-1 was used as the matrix modifier. The correlation coefficient for the standard curve was 0. 9999, the relative standard deviation (RSD) was from 1.7% to 2.4%, and the recovery for the samples was from 98. 16% to 102. 67%. The assay method for the determination of Al in wheat flour food established in this study has referential importance for the constituent of the correlated food standards.

关键词:

Quantitative analysis Aluminum High resolution continuum source graphite furnace atomic absorption spectrometry Microwave digestion

作者机构:

  • [ 1 ] [Ren Ting]Beijing Univ Technol, Coll Life Sci & Bioengn, Beijing 100124, Peoples R China
  • [ 2 ] [Zhao Li-jiao]Beijing Univ Technol, Coll Life Sci & Bioengn, Beijing 100124, Peoples R China
  • [ 3 ] [Zhong Ru-gang]Beijing Univ Technol, Coll Life Sci & Bioengn, Beijing 100124, Peoples R China

通讯作者信息:

  • 赵丽娇

    [Zhao Li-jiao]Beijing Univ Technol, Coll Life Sci & Bioengn, Beijing 100124, Peoples R China

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来源 :

SPECTROSCOPY AND SPECTRAL ANALYSIS

ISSN: 1000-0593

年份: 2011

期: 12

卷: 31

页码: 3388-3391

0 . 7 0 0

JCR@2022

ESI学科: CHEMISTRY;

被引次数:

WoS核心集被引频次: 8

SCOPUS被引频次: 14

ESI高被引论文在榜: 0 展开所有

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