The primary focus of this fellowship is to contribute to fundamental research and help improve the treatment of waterlogged organic artifacts such as those recovered from wooden shipwrecks. During burial, historical ships spend centuries submerged in a marine environment often surrounded by sulfur-reducing bacteria. Over time, these organisms produce hydrogen sulfide which reacts with the organic materials onsite, forming compounds which can severely damage wooden artifacts after they are dried. Therefore, extracting sulfur compounds from wood prior to drying is critical to help mitigate the potential for long-term debilitating issues. Through previous research funding from a National Center for Preservation Technology and Training grant in 2023, initial background research and preliminary sulfur extraction tests via chromatography on cellulose coupons were conducted with promising results. To build off and expand this foundational work, this fellowship is centered on scanning electron microscopy (SEM) and column chromatography of sulfur containing compounds in organic matrices.
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