In accordance with this discovery, it is an object of {TAIL ~ the invention} to provide an economical system for the rapid extraction of exchangeable ions from soils or {HEAD ~ sediments} under ambient oxidation reduction potentials 
In accordance with this discovery , it is an object of { TAIL ~ the invention } to provide an economical system for the rapid extraction of exchangeable ions from soils or { HEAD ~ sediments } under ambient oxidation reduction potentials
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