Assessment of closed vessel digestion methods for elemental determination of airborne particulate matter by ICP-AES

C. F. Wang, M. F. Huang, E. E. Chang, P. C. Chiang

研究成果: 雜誌貢獻文章同行評審

17 引文 斯高帕斯(Scopus)

摘要

Closed vessel acid digestion methods, especially the microwave digestion, have been investigated for elemental analysis of airborne particulates collected by glass fiber filter and analyzed by ICP-AES. A two-step digestion procedure was examined; it included the digestion of airborne particulates with HNO3+HClO4 in the first step and the addition of HF after removal from the intact filter membrane in the second step. Both the NIST Standard Reference Material 1648 urban particulate matter and real samples were employed to assess the capabilities of the suggested methods throughout the QA/QC programs. It was found that the two-step method is an appropriate pretreatment procedure for multi-element analysis by ICP-AES. The importance of evaporation after the digestion and of the substitution of H3BOs addition for evaporation process are discussed. Both evaporation and H3BO3 addition processes after the digestion may effectively reduce the matrix effect on the suppression of the analyte elements. A comparison between the conventional pressure bomb and microwave digestion methods was performed using real samples.
原文英語
頁(從 - 到)201-207
頁數7
期刊Analytical Sciences
12
發行號2
DOIs
出版狀態已發佈 - 1996

ASJC Scopus subject areas

  • 分析化學

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