Standard D6349 has some ambiguous language about the ashing procedures that needs to be clarified. The standard also needs a revision of the tolerances assigned to some temperatures.
coal; coal ash; inductively coupled plasma-atomic emission spectrometry; major and minor element; Coal ash; Coal/coke products--chemical analysis; Composition analysis--coal/coke products; ICP-AES (inductively-coupled plasma atomic emission spectrometry); Major/minor elements;
Citing ASTM Standards
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