Abstract
AbstractA Puget Sound sediment core has been quantitatively analyzed for organic silicon content, as derived from post‐1945 release of poly(organo)‐siloxanes (silicones). The sedimentary silicone data record and preserve at depth, a smeared event horizon, or first appearance of silicone in the sediment column. Core samples older than 50 years showed no detectable silicone as measured by a new procedure utilizing inductively coupled plasma (ICP) emission spectroscopy after solvent extraction to collect the silicone from gram‐sized sediment core samples.
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