Naslov
Biomonitoring of Mercury and Its Compounds in the Vicinity of Natural Gas Treatment Plant Facilities

Autori
Horvat, Milena ; Špirić, Zdravko ; Fajon, Vesna ; et.al.

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
6th International Conference on Mercury as a Global Pollutant - ABSTRACTS / Akagi, Hirokatsu; Lindberg, Steven - Minamata : International Conference on Mercury as a Global Pollutant, 2001

Skup
6th International Conference on Mercury as a Global Pollutant

Mjesto i datum
Minamata, Japan, 15.10.2001. - 19.10.2001

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Natural gas; mercury removal and control; biomonitoring; lichens

Sažetak
Natural gas contains various forms of inorganic and organic Hg species. In order to control and improve the efficiency of an industrial facility for mercury removal from natural gas at the INA-Naftaplin gas treatment plant, Molve, Croatia, a comprehensive environmental monitoring program, including mercury measurement in air, was established. Generally, total mercury concentrations in air are very low (e.g. below 10 ng.m-3) and therefore potentially subject to analytical errors (e.g. contamination). In order to control Hg contamination in air, a cost effective method, based on biomonitoring using in-situ lichen species and/or transplanted lichens specie Hypogymnia physodes was developed and optimised in recent years. Further refinement of this methodology includes the normalization to geochemical background, by using soils collected at various sampling points. For quality control, lichens were transplanted in the area of Idrija mercury mine, Slovenia, where concentrations of mercury in air are higher and clear response of elevated Hg in air is recorded by transplanted lichens. It is well known that natural gas and condensates also contain appreciable amounts of organomercury species such as monomethylmercury and dimethylmercury; preliminary measurements on Hg speciation in air and lichens are also in progress. The results will be discussed and presented at the conference.

Izvorni jezik
Engleski

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