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東海科學
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| 篇名 | Measurement of Trace Amounts of Beryllium in Olive Leaves by Graphite-Furnace Atomic Absorption Spectrophotometry Using Acetylacetone as a Chelating Agent |
|---|---|
| 卷期 | 10 |
| 並列篇名 | 以乙醯丙酮作為螯合劑及使用石墨式原子吸光法測定橄欖葉中鈹的含量 |
| 作者 | 王孟堯 、 劉碩祈 、 王振瀾 、 楊芳玫 、 顏佳新 、 沈佳俞 、 王俊傑 、 郭茂松 |
| 頁次 | 011-026 |
| 關鍵字 | 橄欖葉 、 鈹 、 乙酼丙酮 、 石墨式原子吸光法 、 olive leaves 、 beryllium 、 acetylacetone 、 graphite-furnace atomic absorption spectrophotometry 、 TSCI |
| 出刊日期 | 200807 |
中文摘要
英文摘要
Trace amounts of Be (0.006 - 0.76 ng) in a dried olive leaf sample (20 mg) could be accurately determined by GFAAS after treating with two-stage microwave digestion (HNO3/H2O2) at 85°C for 10 min and using acetylacetone as a chelating agent in the presence of an acetate buffer (pH 6.0). The method detection limit (MDL, 3s) for Be was found to be 0.3 ng/g; the calibration graph was linear up to 38.0 ng/g.The Be contents measured in five olive leaf samples (BCR CRM No. 62 and four samples collected in Taiwan) were between 3.6 and 28.0 ng/g. Good spiked recoveries (97.2 - 101.0%) were obtained for these five olive leaf samples with a relative standard deviation (RSD, n = 3) < 3.0%. The proposed method could be applied to measurements of Be in olive leaves.