Indoor Concentrations of Hg Vapor Following Various Spill Scenarios
Titel:
Indoor Concentrations of Hg Vapor Following Various Spill Scenarios
Auteur:
Bigham, Gary N. Chan, Wanyu R. Dekermenjian, Manuel Reza, Ali
Verschenen in:
Environmental forensics
Paginering:
Jaargang 9 (2008) nr. 2-3 pagina's 187-196
Jaar:
2008-04
Inhoud:
Hg vapor concentrations were measured in an indoor full-scale test environment representative of homes in the rural highlands of Peru, the location of an Hg spill in June 2000. We tested several scenarios of liquid Hg spilled onto a compacted dirt floor in a test room to determine the effect of various parameters, including liquid Hg surface area, temperature, air change rate, and Hg oxidation on room vapor concentrations. The measurements demonstrated that an increase in surface area and/or temperature significantly increased the evaporation rate, whereas oxidation (or age of the Hg) reduced the evaporation rate. We also verified that the Hg vapor analyzers used to test indoor air were capable of detecting very small spills.