Data for: Environmental Controls on Amino Acid Binding Affinities to Smectite and Serpentine Clays in Prebiotic Systems

This dataset contains experimental data supporting the study "Environmental Controls on Amino Acid Binding Affinities to Smectite and Serpentine Clays in Prebiotic Systems." The manuscript will be submitted to Geochimica et Cosmochimica Acta. The study investigated the adsorption of four amino acids with different chemical properties (L-arginine, glycine, L-threonine, and L-glutamic acid) to clays (montmorillonite, nontronite, saponite, and lizardite) and altered rocks (diabase and dunite) under varying fluid conditions, in order to infer selectivity trends to smectites and serpentines on the early Earth. Lab experiments reacted suspensions of the clay minerals and altered rocks with various amounts of each amino acid at pH 5, 7, and 10 in 10 mmol/L NaCl. Experimental data include: - The Adsorption_Data folder contains .csv files on amino acid concentrations from uptake experiments determined via high performance liquid chromatography (HPLC) and the associated Langmuir isotherms fitted to the adsorption data. - The Attenuated_Total_Reflectance_Fourier_Transform_Infrared_Spectroscopy folder contains a .csv file for the ATR-FTIR spectra of lizardite. - The Inductively_Coupled_Plasma_Optical_Emission_Spectroscopy folder contains a .csv file for the concentrations of cations (Al, Si, Mg, Ca, Fe, and K) in the mineral/rock suspensions measured by ICP-OES. - The Langmuir_Constants folder contains .csv files for the Langmuir constants calculated from a least squares regression in MATLAB using the experimental data. - The Powder_X-Ray_Diffraction_Patterns folder contains .csv files for the XRD patterns of the single-phase clays (montmorillonite, nontronite, saponite, and lizardite) and altered rocks (diabase and dunite). - The Speciation_Diagrams folder contains .csv files for the speciation diagrams of arginine, glutamic acid, glycine, and threonine as a function of pH. The associated text files include additional information for interpreting the data.本数据集包含支撑研究《前生命体系中氨基酸与蒙脱石（smectite）及蛇纹石（serpentine）黏土结合亲和力的环境调控因素（Environmental Controls on Amino Acid Binding Affinities to Smectite and Serpentine Clays in Prebiotic Systems）》的实验数据，该研究稿件已提交至《地球化学与宇宙化学学报（Geochimica et Cosmochimica Acta）》。本研究针对四种具有不同化学性质的氨基酸（L-精氨酸、甘氨酸、L-苏氨酸及L-谷氨酸），在可变流体条件下，于10 mmol/L氯化钠（NaCl）溶液中、pH值分别为5、7和10的环境中，开展了黏土矿物（蒙脱石（montmorillonite）、绿脱石（nontronite）、皂石（saponite）及利蛇纹石（lizardite））与蚀变岩石（辉绿岩（diabase）及纯橄榄岩（dunite））的吸附实验，旨在推断早期地球环境中蒙脱石类与蛇纹石类矿物的吸附选择性趋势。实验室实验通过将各类黏土矿物与蚀变岩石的悬浮液与不同梯度浓度的各氨基酸进行反应完成。 实验数据涵盖以下内容： - Adsorption_Data（吸附数据）文件夹：内含通过高效液相色谱（high performance liquid chromatography, HPLC）测定吸附摄取实验中氨基酸浓度的.csv格式文件，以及适配该吸附数据拟合得到的朗缪尔等温线相关数据。 - Attenuated_Total_Reflectance_Fourier_Transform_Infrared_Spectroscopy（衰减全反射傅里叶变换红外光谱，ATR-FTIR）文件夹：包含利蛇纹石ATR-FTIR光谱的.csv格式文件。 - Inductively_Coupled_Plasma_Optical_Emission_Spectroscopy（电感耦合等离子体发射光谱，ICP-OES）文件夹：包含通过ICP-OES测定的矿物/岩石悬浮液中阳离子（铝(Al)、硅(Si)、镁(Mg)、钙(Ca)、铁(Fe)及钾(K)）浓度的.csv格式文件。 - Langmuir_Constants（朗缪尔常数）文件夹：包含通过MATLAB软件对实验数据进行最小二乘回归计算得到的朗缪尔常数的.csv格式文件。 - Powder_X-Ray_Diffraction_Patterns（粉末X射线衍射图谱，XRD）文件夹：包含单相黏土矿物（蒙脱石、绿脱石、皂石及利蛇纹石）与蚀变岩石（辉绿岩及纯橄榄岩）的XRD图谱的.csv格式文件。 - Speciation_Diagrams（形态分布图）文件夹：包含精氨酸、谷氨酸、甘氨酸及苏氨酸随pH值变化的形态分布图的.csv格式文件。 附带的文本文件包含用于解读本数据集的补充信息。