Pyrolysis and EA- and LA-IRMS measurements of chemically treated pollen

The here deposited data represent the Py-GC-MS and EA/LA-IRMS measurements of chemically treated pollen and spores (sporomorphs). Six sporomorph species (Lolium perenne, Zea mays, Pinus echinata, Betula pendula, Eucalyptus globulus and Lycopodium clavatum) were treated with KOH/MeOH (saponification), acetolysis (acetic acid, acetic anhydride and sulfuric acid), and HF/HCl, in triplicate. The Py-GC-MS sheet shows the percentage of each pyrolysate found for each species/treatment combination. The stable carbon isotope (δ13C) measurements were done using an Element Analyzer (EA) isotope ratio mass spectrometer (IRMS) (second sheet) and a laser ablation (LA) IRMS (third and fourth sheet). The LA-IRMS measurements are corrected using a polyethylene (PE) standard (IAEA-CH-7, δ13C -32.15‰) (third sheet), and some samples are additionally corrected using an in-house polylactic acid (PLA) standard (-12.63‰) (fourth sheet). Note: Version v2 has mistakes in the LA data, always download latest version.本次提交的数据为经化学处理的花粉与孢子（孢粉类群）的裂解气相色谱-质谱联用（Py-GC-MS）以及元素分析仪/激光剥蚀-同位素比值质谱（EA/LA-IRMS）测试结果。 选取6种孢粉类群（黑麦草Lolium perenne、玉米Zea mays、火炬松Pinus echinata、垂枝桦Betula pendula、蓝桉Eucalyptus globulus及石松Lycopodium clavatum），分别采用KOH/甲醇（皂化反应）、乙酰解（乙酸、乙酸酐与浓硫酸）以及HF/HCl进行处理，每组处理设置三次重复。 裂解气相色谱-质谱联用工作表展示了各物种-处理组合下每种热解产物的占比。稳定碳同位素（δ¹³C）测试分别通过元素分析仪-同位素比值质谱联用系统（EA-IRMS，第二工作表）以及激光剥蚀-同位素比值质谱联用系统（LA-IRMS，第三、第四工作表）完成。其中LA-IRMS测试结果以聚乙烯（PE）标准物质（IAEA-CH-7，δ¹³C = -32.15‰）进行校正（第三工作表），部分样本额外采用实验室内部聚乳酸（PLA）标准物质（δ¹³C = -12.63‰）进行校正（第四工作表）。 注意：版本v2的激光剥蚀数据存在错误，请始终下载最新版本。