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Author:

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

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PKU PubMed CSCD

Abstract:

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 1000 W and 190 degrees C for 40 minutes. The optimum pyrolysis temperature was 1350 degrees C and the optimum atomization temperature was 2400 degrees C. Magnesium nitrate solution with the concentration of 1 g x 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.

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Author Community:

  • [ 1 ] [Ren Ting]College of Life Science & Bioengineering, Beijing University of Technology, Beijing 100124, China. renting@bjut.edu.cn

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Source :

Guang pu

ISSN: 1000-0593

Year: 2011

Issue: 12

Volume: 31

Page: 3388-91

0 . 7 0 0

JCR@2022

ESI Discipline: CHEMISTRY;

Cited Count:

WoS CC Cited Count: 0

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 14

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