Application of the diffusion screen technique to the determination of gaseous mercury and mercury (II) chloride in flue gases

Kari Larjava, Timo Laitinen, Tiina Kiviranta, Volker Siemens, Dieter Klockow

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A technique based on the use of a gold-coated diffusion screen for the collection of gaseous mercury species in flue gases is introduced. Using this technique, collection efficiencies for both metallic mercury and mercury(II)chloride are well above 90% at temperatures up to more than 100°C and at gas flow rates up to 6 1/min. SO2, NO and H2O do not have significant effects on the collection efficiency. The method is very convenient considering practical flue gas measurements, because the screen can be used in a compact filter holder suitable for in-stack measurements.

Original languageEnglish
Pages (from-to)65-73
Number of pages9
JournalInternational Journal of Environmental Analytical Chemistry
Issue number1-4
Publication statusPublished - 1993
MoE publication typeA1 Journal article-refereed


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