TOC, CN, and δ13C results of bulk organic matter in permafrost from the Lena Delta, Arctic@en

This datasheet includes TOC, C/N, and δ13C results of bulk organic matter from permafrost collected from the Lena Delta. Samples were freeze-dried, homogenized, weighed ~15 mg into silver boats, acidified with 1.5 M HCl, and dried at 55 ˚C. The analyses were conducted using a Thermo Fisher Scientific DeltaQ IRMS coupled with a FLASH 2000 CHNS Analyzer via a CONFLO IV gas mixing system at CNR-ISP in Bologna, Italy.本数据集涵盖采自勒拿三角洲（Lena Delta）的永久冻土样品中块状有机质的总有机碳（TOC）、碳氮比（C/N）及碳同位素δ¹³C测试结果。样品经冷冻干燥、均质化处理后，称取约15 mg样品置于银舟中，以1.5 M盐酸进行酸化，随后在55 ℃下烘干。本次分析于意大利博洛尼亚的CNR-ISP实验室完成，采用赛默飞世尔科技（Thermo Fisher Scientific）DeltaQ型同位素比率质谱仪（IRMS, Isotope Ratio Mass Spectrometer），搭配FLASH 2000型CHNS元素分析仪，并通过CONFLO IV气体混合系统联机联用。