ORGANIC RESIDUE (FTIR) ANALYSIS OF SAMPLES FROM SITE 48SW17323, SWEETWATER COUNTY, WYOMING

Fill and fire-modified sandstone from three hearths at site 48SW17323, a prehistoric camp, located in the central portion of the Greater Green River basin in Sweetwater County, Wyoming was submitted for organic residue analysis. Samples were tested for organic residues using Fourier Transform Infrared Spectroscopy (FTIR). Organic residue analysis provides information concerning the compounds that were extracted from the fill and fire-modified rock samples and through matches with our reference library of raw and processed plants, information concerning foods that might have been processed in association with hearths at this site.

采自怀俄明州斯威特沃特县大格林河盆地中部史前营地遗址48SW17323三处火塘的填充料与经火烤改造砂岩样本，被提交进行有机残留物分析。研究人员采用傅里叶变换红外光谱法（Fourier Transform Infrared Spectroscopy, FTIR）对该批样本的有机残留物开展了检测。有机残留物分析可获取从填充料及经火烤改造砂岩样本中提取的化合物相关信息；通过与本研究的原生及加工植物参考数据库进行比对，还可得到该遗址火塘周边可能曾实施的食物加工活动相关信息。