The loss on ignition (LOI) of fatty acids (FAs; including carbon numbers of C8–C24) in vegetal and animal organic reference samples at 200–500°C was examined. The total FAs in the samples preferentially disappeared through LOI operation compared to the other compounds. The average carbon numbers in total FAs did not change substantially from their original values due to LOI, regardless of the temperature. However, the unsaturation ratios in each FA species fluctuated throughout the operation.

中文翻译：

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表征天然有机样品中的脂肪酸在每个温度下烧失量 (LOI) 的行为

在 200-500°C 下检查了植物和动物有机参考样品中脂肪酸（FAs；包括 C8-C24 的碳数）的烧失量 (LOI)。与其他化合物相比，样品中的总 FA 优先通过 LOI 操作消失。无论温度如何，总 FA 中的平均碳数与 LOI 的原始值相比没有显着变化。然而，在整个操作过程中，每个 FA 物种的不饱和度比率波动。