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5U, S. EPA. Appendix K to Part 75 ,Quality assurance and operating procedures for sorbent trap monitoring systems (40 CFRPart 75 Appendix K) [ S]. Washington D. C.: U. S, EPA,2005.
6U.S. EPA. Environmental Technology Verification Report, A- pex instruments sorhent - Based mercury sampling system [ R]. Washington D. C. :U. S. EPA,2007.
7U.S. EPA. Environmental Technology Verification Report, En- vironmental supply company HG-324K sorbent Based mercury sampling system [ R ]. Washington D. C. : U. S. EPA ,2007.
8U.S. EPA. Long-term field evaluation of mercury (Hg) continuous emission monitoring systems: Coal-fired power plant burn- ing eastern bituminous coal and equipped with selective catalytic reduction (SCR) , electrostatic precipitator (ESP) , and wet scrubber: Field activities from November 2004 to September 2005 final report Volume 1 ( of 3 ) Text [ R ]. Washington D. C. : U. S. EPA,2006.
9U.S. EPA. Performance Specification 12A,Specifications and test procedures for total vapor phase mercury continuous emission monitoring systems in stationary sources (40 CFR Part 60 Appendix B) [ S]. Washington D. C. :U. S. EPA,2005.
10U.S. EPA. Environmental Technology Verification Report, Thermo scientific mercury freedom system [ R ]. Washington D. C. :U. S. EPA,2007.