Optimization of Ultrasonic-Assisted Extraction of Inorganic Arsenic in Sargassum fusiforme (Harv.) by Response Surface Methodology

doi:10.7506/spkx1002-6630-201310015

Abstract

Abstract:

Ultrasonic-assisted extraction was utilized to extract inorganic arsenic from Sargassum fusiforme (Harv.)
by hydrochloric acid. Hydride generation atomic fluorescence spectrometry (HG-AFS) was used for the determination
of inorganic arsenic. Based on the single factor tests, the Box-Behnken central composite design and response surface
methodology (RSM) were adopted to obtain the optimal conditions for the extraction of inorganic arsenic from Sargassum
fusiforme (Harv.), using fluorescence intensity as the response value and the extraction concentration, extraction temperature
and time as the factors. The results showed that the optimum extraction conditions of inorganic arsenic were the extraction
concentration 6.6 mol/L, extraction temperature 53.4 ℃ and time 24.4 min. Under these conditions, the fluorescence
intensity was 675.51, and the content of inorganic arsenic was 4.78 mg/kg.

Key words: atomic fluorescence spectrometry (AFS), Sargassum fusiforme (Harv.), inorganic arsenic, ultrasonicassisted extraction, response surface methodology

CLC Number:

中图分类号：O613.63 文献标识码：A

ZHANG Jin-ling，ZHONG Yao-guang，WAN Jin-qing，QIAO Yong-jin. Optimization of Ultrasonic-Assisted Extraction of Inorganic Arsenic in Sargassum fusiforme (Harv.) by Response Surface Methodology[J]. FOOD SCIENCE, 2013, 34(10): 67-71.

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