Journal of Korean Society of Occupational and Environmental Hygiene (한국산업보건학회지)
- Volume 11 Issue 1
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- Pages.48-55
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- 2001
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- 2384-132X(pISSN)
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- 2289-0564(eISSN)
Accuracy and Precision of Microwave Oven Digestion/Atomic Absorption Spectrophotometry for Analyzing Airborne Chromium Collected on MCE Filter in Plating Operation
도금공정 크롬시료 분석을 위한 Microwave Oven Digestion/Atomic Absorption Spectrophotometry 방법의 정확도 및 정밀도 평가
- Lee, Byung-Kyu (Department of Industrial Safety and Health, Inje University) ;
- Lee, Ji-Tae (Department of Industrial Safety and Health, Inje University) ;
- Shin, Yong-Chul (Department of Industrial Safety and Health, Inje University)
- Received : 2000.12.15
- Accepted : 2001.03.22
- Published : 2001.05.30
Abstract
The purpose of this study was to evaluate the analytical accuracy and precision of microwave oven digestion/atomi absorption spectrophotometry (AAS) for analyzing airborne chromium collected on mixed cellulose ester membrane (M filter from the work environment, and to compare the accuracy and the precision with those of the National Institute for Occupational Safety and Health (NIOSH) Method #7024 hot plate digestion/AAS method. For this study, field air sample pairs were collected from a electroplating process, and spiked samples in a laboratory were prepared and using these samples. Two digestion methods were comp; and evaluated in terms of recovery rate and bias as indices of accuracy and coefficient of variation as a index of precision. The results and conclusions are as follows. In spiked samples, the accuracies (% mean recoveries) of hot plate/AAS and microwave oven/AAS method were 97.19%, 97.1%, respectively, and the precisions (pooled respectively, and the precisions (pooled coefficient of variance,