Stable isotope analyses of environmental waters (δ²H, δ¹⁸O) are an important assay in hydrology and environmental research with rising interest in δ¹⁷O, which requires ultra-precise assays. We evaluated isotope analyses of six test water samples for 281 laboratory submissions measuring δ²H and δ¹⁸O along with a subset analyzing δ¹⁷O and Δ¹⁷O by laser spectrometry and isotope ratio mass spectrometry (IRMS).

中文翻译：

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环境水体双和三同位素（δ18O、δ2H、Δ17O）分析的进展和挑战：实验室性能的国际评估

环境水的稳定同位素分析 ( δ ² H、δ ¹⁸ O) 是水文学和环境研究中的一项重要分析，对δ ¹⁷ O 的兴趣日益浓厚，这需要超精密分析。我们评估了 281 个实验室提交的测量δ ² H 和δ ¹⁸ O 以及通过激光光谱法和同位素比质谱法 (IRMS)分析δ ¹⁷ O 和Δ ¹⁷ O的子集的六个测试水样的同位素分析。