Embedding resins are commonly used to facilitate high-resolution sampling for stable isotope analysis but anomalous δ¹³C values have been observed in some cases. Here we compare the results of microsampling strategies for hand-drilled versus resin-embedded micromilled samples from the same marine shells to assess whether resin contamination is implicated in δ¹³C spikes. The comparison allows assessment of the relative benefits for spatial resolution, seasonal range for both δ¹⁸O and δ¹³C, and sample failure rates.

中文翻译：

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增量碳酸盐稳定同位素分析中的微铣与手工钻孔：嵌入树脂造成 δ13C 污染的可能性

嵌入树脂通常用于促进稳定同位素分析的高分辨率采样，但在某些情况下观察到异常 δ ^{13 C 值。}在这里，我们比较了来自相同海洋贝壳的手工钻孔和树脂嵌入微研磨样品的微量取样策略的结果，以评估树脂污染是否与 δ ¹³ C 峰值有关。通过比较可以评估空间分辨率、δ ¹⁸ O 和 δ ¹³ C 的季节范围以及样本故障率的相对优势。