PUMA
Istituto di Biofisica     
Di Francesco F., Ferrara R., Mazzolai B. Two ways of using a chamber for mercury flux measurement—A simple mathematical approach. In: Science of the Total Environment, vol. 231 (1-3) pp. 33 - 41. Elsevier, 1998.
 
 
Abstract
(English)
The use of a flux chamber to measure high mercury fluxes (>1 μg m−2 h−1) over contaminated soil was examined. Air from the chamber was circulated through a cold vapour atomic absorption spectrometer (CVAAS) in a closed circuit; emission flux was then determined from the zero time concentration derivative. Based on simple mathematical models, equations have been derived to evaluate the fluxes. Results obtained from laboratory experiments performed using a thin soil layer with a stabilized emission, were compared with a conventional chamber method that uses gold traps for mercury sampling. Good agreement between the two techniques was observed, validating the theoretical conclusions.
DOI: 10.1016/S0048-9697(98)00068-0
Subject Mercury
Flux chamber
Soil emission


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