Analytical Science and Technology (분석과학)
- Volume 14 Issue 4
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- Pages.324-330
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- 2001
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- 1225-0163(pISSN)
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- 2288-8985(eISSN)
Simultaneous Determination of Sulfur, Phosphorus, and Zine in Lubricating Oils by Microwave Digestion System and ICP-AES
마이크로파 분해장치와 유도결합 플라스마 원자방출분광법을 이용한 윤활유 시료 중 S, P 및 Zn의 동시 분석
- Cho, Sung-Ill (Korea Research Institute of Chemical Technology) ;
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Lim, Heon-Sung
(Korea Research Institute of Chemical Technology)
;
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Lee, Sueg-Geun
(Korea Research Institute of Chemical Technology)
- Received : 2001.06.25
- Published : 2001.08.25
Abstract
For the analysis of S, P and Zn in lubricating oil, microwave digestion method was studied by using inductively coupled plasma-atomic emission spectrometry(ICP-AES). Lubricating oil was completely decomposed with nitric acid or a mixture of nitric acid and hydrogen peroxide using and closed microwave digestion system. Digestions are completed within 50 min, a factor of at least 3~4 times faster than for the conventional digestion. A gradual heating program operated by the pulsed mode was found suitable for decomposing the lubricating oil matrix safely. The proposed method of digestion gave relative standard deviations(RSD) less than 3% for the elements determined.
마이크로파 분해법과 유도결합 플라스마 원자방출분광법(ICP-AES)을 이용하여 윤활유내의 S, P와 Zn의 분석을 하였다. 윤활유는 질산 또는 질산-과산화수소의 혼합산을 분해용액으로 하여 밀폐형 마이크로파 분해장치로 분해시켰다. 기존의 분해방법과 비교하여 펄스 방식에 의해 작동되어지는 단계적인 가열 프로그램은 윤활유 매질을 안전하게 분해하는데 3~4배 빠르고 효율적이었다. 제의된 분해방법은 검출된 원소들에 대해 3% 미만의 상대표준편차(RSD)를 보여주었다.