Hydrogeologists classify contaminants as “floaters” or “sinkers” based on where the non-aqueous phase (“free product” or undissolved organic contaminants) reaches equilibrium in groundwater. Classify each of the following based on their density.
a) Octane
b) PCE
c) Anthracene
d) Carbon tetrachloride
e) Aniline (amino-benzene)
f) Pentachlorophenol