Web of ScienceTMcore citation database was used to econometrically analyze the articles about the removal of sulfur

oxynitride and mercury from flue gas that published from the year of 1998 to 2017

which could accurately grasp the research status and frontier dynamics in this field

and help researchers to understand the overall situation of global development in this field and define future research directions. The results indicated that the number of global publications in this field displayed a rapidly and steadily rising trend. No matter in the aspects of scientific research institution or research scholar

the publication amounts of China took a lead of other countries in the world. However

in the matter of high frequency cited articles

the advantage of China was not as obvious as that in article amounts. The most influential international journals in this research field were Environmental Science Technology

Applied Catalysis B: Environmental and Journal of Hazardous Materials.The research hotspots in the field of flue gas pollutant removal were using the method of photocatalysis

plasma discharge and so on to oxidize or reduce pollutants through redox reaction and then remove them. Moreover

the simultaneous removal technology of SO_2

NO_x and Hg~0 and low-temperature SCR technology were also research hotpots in this field.