“…2.3. Candidate Materials for Mercury Speciation by Selective Capture A number of investigators have studied sorbent selectivity for a variety of gaseous Hg species (e.g., Ballantine and Zoller 1984;Baya et al, 2013;Bloom et al, 1988;Bloom et al, 2005;Hebisch et al, 2018;Kvietkus, et al 1995;Liang et al 1994;Shewchuk et al 2016;Sommar, 1999;Trüe et al 2011;Trujillo and Campbell, 1975;Wilhelm et al, 2006;Živkovi´c et al, 2020). Several of these projects also combined sorbents into sorbent trains for operationally separating and quantifying Hg species (e.g., Baya et al, 2013;Bloom et al, 2005;Sommar, 1999;Trujillo and Campbell, 1975;Wilhelm et al, 2006).…”