ICP-OES를 이용한 우유의 Selenium 분석
- 김효중 박종길 신정걸 백영진
- 한국축산식품학회
- Food Science of Animal Resources
- Korean Journal for Food Science of Animal Resources 제23권 제4호
- 등재여부 : KCI등재
- 2003.12
- 356 - 360 (5 pages)
The purpose of this paper was to determine the quantity of selenium in milk by inductively coupled plasma optical emission spectrometry. The sample was digested in teflon vessel containing nitric-hydrogen peroxide acid mixture. After digestion, the sample in treated with additional hydrochloric acid. Total selenium was reduced with sodium borohydride and concentrated hydrochloric acid in a simplified hydride generation(HG) manifold. The optimum conditions of HG are 2 M for HCI, 1.5% for NaBH₄ 1.2mL/min for sample flow. Recovery rates by the standard addition method were 88.0% at 10 ppb and 92.2% at 10 ppm. The relative standard deviations were 4.8 and 3.2%, respectively. This method showed a good accuracy and precision. And so it was highly suitable for determination of small quantity of selenium in milk.