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KMID : 1059519840280010041
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Journal of the Korean Chemical Society
1984 Volume.28 No. 1 p.41 ~ p.46
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X-Ray Fluorescence Analysis by Stearic Acid-Extraction Technique
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Oh Tae-Sub
Lee Man-Ho
Park Young-Kyu
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Abstract
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To preconcentrate trace elements, microgram amounts of 5 heavy metals (Cu, Co, Ni, Zn and Cd) were precipitated with 8-hydroxyquinoline (oxine) and metal oxinates were extracted with stearic acid. And then each of the molten stearic acid extract with stearic acid. And then each of the molten stearic acid extract was poured into a glass ring and cooled for specimen preparation. The obtained specimens were analyzed by X-ray fluorescene spectrometry. And then conditions of precipitation formation and extraction, reproducibility, sensitivity and detection limit were observed. The relative standard deviation of specimen preparation was 1.0~5.7% and the detection limit was 5~50μg/100ml. The proposed preconcentration procedure exhibited a considerable inhancement and simplicity in preparing specimens.
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