How does passive sampling of soil vapors compare to other geochemical methods?
Passive sampling is based on the direct detection of vapors emanating from mineralization which is different from many other surface geochemical techniques. The primary advantages of passive sampling (days) versus short term, “active” sampling (minutes) include the ability of passive techniques to successfully work in soils with low permeability or high moisture, to work in a variety of ambient conditions and to detect a broader range of compounds than active methods.
