The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 06, 2012
Filed:
Nov. 30, 2009
Thomas David Hayes, Schaumburg, IL (US);
Thomas David Hayes, Schaumburg, IL (US);
Gas Technology Institute, Des Plaines, IL (US);
Abstract
A method and apparatus for in-situ measurement of soluble contaminant flux rates from sediments in which an inverted desorption chamber containing a sorbent system is filled with water and placed over an area of sediment, whereby the interior of the chamber is isolated from the exterior of the chamber above the sediment. Soluble contaminants released from the sediment are sorbed onto the surface of a sorbent material disposed within a plurality of semipermeable membrane bags disposed within the chamber. Each semipermeable membrane bag is removed from the chamber in a pre-defined sequence over a period of time and the sorbent material in each bag is analyzed to determine an amount of the soluble contaminant sorbed by the sorbent material. From the results of the analyses, the mass of the soluble contaminant removed from the sediment over time can be calculated.