| Abstract: | Abstract A procedure has been developed which permits the direct analysis of powdered whole-coal samples by atomic absorption or atomic emission methods using conventional instrumentation, thereby eliminating time-consuming ashing and sample-digestion procedures. Linear plots of the absorption signal intensity versus the elemental concentration of analyzed whole-coal samples were obtained for several elements. Preliminary results indicate this method is applicable for the estimation of both minor-level (eg., Fe and Ca) and trace-level (eg., Pb and Zn) constituents. |
