Modern Methods in Bituminous Coal Analysis: Trace Elements

I. INTRODUCTION

The analysis of coals and related materials for trace elements is still demanding and the best results depend on constant efforts by analytical chemists. Any suggestion that more sophisticated instruments remove the need for analytical chemists is a myth. Indeed, there is a danger that the figures produced by such instruments may be taken unquestionably for results. In order to obtain valid results for trace elements in coals, it is necessary to know something about the nature of coal so that the various methods of analysis can be used validly. For the proper operation of an instrumental method, the chemist must know the theoretical background, the optimum operating conditions, and the kind of know-how that comes only with experience.