INTRODUCTION

The RA-915 series mercury analyzers use thermal decomposition method that provides direct determination of mercury concentration in coal and allows to omit elaborate and time-consuming procedures of the sample preparation. This method implemented in ASTM D6722, EPA 7473, DL/T 2296 involves thermal decomposition of the sample combined with amalgamation on a sorbent trap and catalytic conversion using oxygen as a carrier gas. Lumex Instruments offers the procedure and instrumentation for rapid direct analysis using thermal decomposition method without amalgamation step. Thermoscanning option enables fast determination of mercury species having different binding energy to coal matrix, improving the efficiency of coal pre-combustion treatment.