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Speciation of volatile mercury species present in digester and deposit gases
Author(s) -
Sommar Jonas,
Feng Xinbin,
Lindqvist Oliver
Publication year - 1999
Publication title -
applied organometallic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 71
eISSN - 1099-0739
pISSN - 0268-2605
DOI - 10.1002/(sici)1099-0739(199906)13:6<441::aid-aoc859>3.0.co;2-h
Subject(s) - chemistry , mercury (programming language) , environmental chemistry , cold trap , cold vapour atomic fluorescence spectroscopy , sewage sludge , mercure , sewage , mass spectrometry , analytical chemistry (journal) , waste management , chromatography , organic chemistry , computer science , programming language , engineering
Volatile mercury compounds have been speciated in gases evolved from fermentation of sewage sludge as well as municipal waste. The species were trapped by sequential sampling, using a noble‐metal trap in series with an activated‐carbon trap. Thermally desorbed Hg 0 and (CH 3 ) 2 Hg were separated by GC at 70 °C and detected by cold vapour atomic fluorescence spectroscopy after thermal reduction. The amounts of mercury detected in the sewage gas correspond to concentrations in the range 50–110 ng m −3 for both species whereas the deposit gases were found to contain only elemental mercury. Monomethylmercury species could not be positively identified in any of the gas samples. Copyright © 1999 John Wiley & Sons, Ltd.