利用原子吸收光譜法比較不同消化程序下商業化粉末狀湯樣品之微量金屬含量   全文下載

Comparison of Digestion Procedures on Commercial Powdered Soup Samples for the Determination of Trace Metal Contents by Atomic Absorption Spectrometry

利用火焰式及石墨爐式原子吸收光譜法檢測土耳其生產之商業化粉末狀湯樣品中的銅、錳、鋅、鐵及鋁等金屬含量。本研究比較濕式、乾式及微波消化湯樣品等三種處理程序。由於簡便及迅速等因素，微波消化為最有效之處理程序。此方法之準確性由標準參考物質（sRM 8418 Wheat Gluten）確認。樣品中微量元素之含量分別為銅0.41~4.78 μg/g、錳1.29~49.4 μg/g、鋅1.26~22.5 μg/g、鐵4.62~61.7 μg/g及鋁6.86~547.7 μg/g。本結果亦與文獻之數據比較。

The concentrations of copper, manganese, zinc, iron and aluminum in commercial powdered soup samples produced in Turkey were determined using flame and graphite furnace atomic absorption spectrometry. We compared wet, dry and microwave digestion procedures for the digestion of the soup samples. The microwave digestion procedure for the soup samples was demonstrated to be most effective due to its simplicity and quick results. The accuracy of the method was checked against a standard reference material (SRM 8418 Wheat Gluten). Contents of investigated trace metals in soup samples ranged between 0.41 and 4.78 μg/g for copper, 1.29 and 49.4 μg/g for manganese, 1.26 and 22.5 μg/g for zinc, 4.62 and 61.7 μg/g for iron, and 6.86 and 547.7 μg/g for aluminum. The results were compared with values reported in the literature.