Paraloid contamination assessment for biomarker studies

The aim of this research was to investigate how the presence of acrylic resins such as Paraloid can affect biomarker analyses of geological specimens, specifically on a fossil sample that had been stabilised with Paraloid B-72. This was accomplished through the use of pyrolysis analyses, lipid biomarker extractions, and surface analytical techniques such as SEM and ToF-SIMS. The results showed separation of the Paraloid from aliphatic and aromatic biomarker analytes, but the polar fraction of the bitumen was compromised. The data included here show that Paraloid had minimal impact on lipid biomarker proxies after separation by small-scale liquid chromatography. Also included are the retention times and relative retention factors for a series of highly branched alkanes identified in the fossil bitumen extract (DB-1 gas chromatograph column).本研究旨在探究帕洛莱德（Paraloid）这类丙烯酸树脂对地质标本生物标志物分析的影响，尤其聚焦于经帕洛莱德B-72（Paraloid B-72）加固稳定的化石样本。本研究通过热解分析、脂质生物标志物提取，以及扫描电子显微镜（Scanning Electron Microscope, SEM）、飞行时间二次离子质谱（Time-of-Flight Secondary Ion Mass Spectrometry, ToF-SIMS）等表面分析技术完成相关实验。结果显示，帕洛莱德可与脂肪族及芳香族生物标志物分析物实现分离，但沥青的极性组分遭到破坏。 本次所附数据显示，经小型液相色谱分离后，帕洛莱德对脂质生物标志物替代指标的影响极小。本数据集还包含了从该化石沥青提取物中鉴定出的一系列高支链烷烃的保留时间与相对保留因子（所用气相色谱柱为DB-1色谱柱）。