Reinhard Leinz 1996 Scientists at the U.S. Geological Survey have expanded applications of the Chim electrode, technology used to perform partial geochemical extractions from soils. Recent applications of the the improved electrode technology show that geochemical extraction efficiencies can be improved by 2 orders of magnitude or better to about 30%. application/pdf 10.3133/fs19496 en U.S. Geological Survey Technology transfer opportunities: patent license: electrochemical technique for introducing and redistributing ionic species into the earth reports