An overview on analytical methods for quantitative determination of multi-element in coal samples

作者：Mketo Nomvano; Nomngongo Philiswa N; Ngila J Catherine

来源：TrAC-Trends in Analytical Chemistry, 2016, 85: 107-116.

DOI：10.1016/j.trac.2016.09.002

• Coal samples
• Multi-element
• Destructive techniques
• Non-destructive techniques
• Total quantification
• Speciation analysis
• Combustion methods
• Microwave digestion
• Sequential extraction

In this review, sample preparation strategies and various analytical techniques are reviewed in details for quantitative determination of multi-element in coal samples. In addition, this review surveys the existing literature on metal quantitative determination in coal related matrices using destructive and non-destructive analytical techniques. Destructive analytical techniques require sample processing before the extraction and quantification of the target analyte by a suitable analytical technique. The sample preparation procedures discussed include wet digestions and combustion reactions. Disadvantages and advantages of these sample processing methods are elaborated with emphasis on microwave approach, since it is fast, robust, effective and prevent losses of volatile elements. Moreover, the mobility behaviour of some elements in coal is discussed and that gives an insight on the speciation of multi-element within the coal. Lastly, thermal stability of various elements in combustible material is also reviewed based on the existing literature reports.

• 出版日期2016-12