Patent ID: 8127626
Filing Date: 2012-03-06
Classification: G01N

Abstract:
1. An apparatus for in-situ measurement of soluble contaminant flux rates in sediments comprising: a chamber having an open bottom, at least one side wall, and a top wall closing off a top of said chamber and forming a plurality of openings; a sorbent system disposed within said chamber, said sorbent system comprising a plurality of removable porous enclosures, each said enclosure containing a semipermeable membrane bag containing one of an ion exchange resin and a contaminant sorbent suitable for sorbing at least one soluble contaminant, said porous enclosures sized to pass through said openings; removable sealing means for sealing each said opening connected with each said porous enclosure; removal means for individually removing each of said porous enclosures; and close-off means for closing off said openings upon removal of a corresponding said porous enclosure.