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The mercury concentrations in flue gases of waste incineration,including one medical waste incineration plant,two life waste incineration plants and one industrial waste incinerator,were measured based on a measurement method with the aluminum matrix sorbent.Each plant was equipped with different existing pollution control devices.During the course of waste stream,the samples,such as fly ash in bag filter,waste water in deacidification tower and flue gas,were collected.The Hg concentration in waste water was measured by CVAAS after appropriate preparation and acid digestion.Solid samples were measured by the RA-915+ Zeeman Mercury Spectrometer.And the vapor phase Hg was collected by a sorbent trap from flue gas and then measured using CVAAS followed by acid leaching.For the medical waste incineration plant,the mercury content in untreated flue gas was 214.92 μg/m3.After cyclone,lime powder,activated carbon injection device and a bag filter,the mercury content was reduced to 4.20 μg/m3,the mercury removal efficiency was up to 96%.The mercury content was 12.36 mg/kg in fly ash and 5.48 mg/L in waste water.The mercury concentration in the flue gas emissions of two life waste incineration plants was 3.94 μg/m3 in average.The average mercury content in the flue gas of an industrial waste incinerator emission was 1.17 μg/m3.