Abstract

Mercury is the only atmospheric pollution gas occurring as free atoms. Mercury is released from chlorine-alkali plants, refuse incineration plants, and from crematories. Mineralizations, geothermal reservoirs and volcanism are also known to be associated with elevated atomic mercury concentrations. Recently, we have demonstrated a differential absorption lidar technique for measurements of mercury down to the background concentration value of about 2 ng/m3.1

© 1991 Optical Society of America

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