篇名 | 以石墨爐式原子吸收光譜儀直接分析食用油脂類中砷之含量 |
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卷期 | 11:3 |
並列篇名 | Determination of Arsenic in Edible Oils by Direct Graphite Furnace Atomic Absorption Spectrometry |
作者 | 陳石松 、 鄭秋真 、 周薰修 |
頁次 | 214-219 |
關鍵字 | 石墨爐式原子吸收光譜儀 、 砷 、 食用油脂 、 Graphite furnace atomic absorption spectrophotometer 、 GFAAS 、 Arsenic 、 Edible oils 、 MEDLINE 、 Scopus 、 SCIE |
出刊日期 | 200309 |
A direct analytical method of arsenic content in edible oil with graphite furnace atomic absorption spectrophotometer was studied. Edible oil was diluted with n-heptane followed by the determination of arsenic with Zeeman graphite furnace atomic absorption spectrophotometer and transverse heated graphite atomizer (THGA). The arsenic organic AAS standard solution was used as calibration standard, and bis (benzonitrile) dichloro palladium solution was used as a matrix modifier. The results showed that the optimal ashing and atomizing temperatures were 1200ûC and 2300ûC, respectively. The detection limit was estimated to be 0.010 ppm, and the percentages of recovery for the spike of 0.05, 0.10 and 0.20 ppm arsenic to salad oil, fish oil, palm oil, and lard were 91.2~94.3%, 94.7~95.6%, 94.2~96.7% and 93.3~94.1%, respectively. With the use of this method, thirty edible oils were analyzed and the arsenic contents were found to be below the detection limits.