Detection and quantification of hydrocarbons in sediments

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Abstract

A new technology developed by the US Geological Survey now allows for fast, direct detection of hydrocarbon plumes both in rivers and drifting in the deep ocean. Recent experiments show that the method can also detect and quantify hydrocarbons buried in river sediments and estuaries. This approach uses a variant of induced polarization, a surface-sensitive physical property of certain polarizable materials immersed in an electrolyte that can accept and adsorb charge under an inducing voltage. Known polarizable materials include most sulfides, ilmenite (FeTiO3), metallic objects such as buried wrecks and pipelines, and now hydrocarbons. The hydrocarbon-in-water response to induced polarization is in fact nearly two orders of magnitude greater than the IP response of any of the hard minerals. The oil:water detection limit for hydrocarbons so far is down to 0.0002% in the laboratory.

Additional publication details

Publication type Conference Paper
Publication Subtype Conference Paper
Title Detection and quantification of hydrocarbons in sediments
DOI 10.1109/OCEANS.2016.7761416
Year Published 2016
Language English
Publisher IEEE
Contributing office(s) Volcano Science Center
Description Conference paper
Larger Work Type Book
Larger Work Subtype Conference publication
Larger Work Title OCEANS 2016 MTS/IEEE Monterey