Journal of the Korean Chemical Society (대한화학회지)

Korean Chemical Society (대한화학회)
권호 표지

X-Ray Fluorescence Analysis by Stearic Acid-Extraction Technique

스테아르산 추출법에 의한 X-선 형광분석

  • Tae Sub O (Department of Chemistry, Teacher's College, Kyungpook National University) ;
  • Man Ho Lee (Department of Industrial Chemistry, College of Engineering, Kyungpook National University) ;
  • Young Kyu Park (Dae Jeon Machine Depot)
  • 오대섭 (경북대학교 사범대학 화학과) ;
  • 이만호 (경북대학교 공과대학 공업화학과) ;
  • 박영규 (대전기계창)
  • Published : 1984.02.20
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Abstract

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~$50{\mu}g$/100ml. The proposed preconcentration procedure exhibited a considerable inhancement and simplicity in preparing specimens.

미량 금속원소를 농축하기 위하여 수용액중의 구리, 코발트, 니켈, 아연 및 카드뮴을 8-히드록시 퀴놀린(옥신)으로 착물을 만들고 스테아르산으로 추출하였다. 추출한 것을 녹여서 본틀에 부어 시편을 만들고 X-선 형광 분석법으로 정량하였다. 이때 침전 생성 및 추출조건, 재현성, 감도 검출한계 등에 관하여 조사하였다. 시편 제작과정의 상대 표준편차는 1.0~5.7%이고, 검출한계는 5~$50{\mu}g$/100ml이었다. 이 농축법으로 감도를 높일 수 있으며 시편 제작이 편리한 잇점이 있다.

Keywords

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