Long-chain diols (LCDs) are ubiquitous lipids produced by freshwater and marine algae. A combination of semi-preparative high performance liquid chromatography and gas chromatography isotope ratio monitoring mass spectrometry, allowed the measurement of δ2H of individual LCDs from cultures, which indicated a correlation with the hydrogen isotope composition of the growth water and a species-specific effect. Results from environmental samples along a salinity gradient indicated the potential of δ2H ratios of LCDs to trace the hydrogen isotopic composition of water and sea surface salinity.

中文翻译：

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长链二醇的氢同位素比反映了盐度

长链二醇 (LCD) 是由淡水和海藻产生的普遍存在的脂质。半制备型高效液相色谱法和气相色谱法同位素比监测质谱法相结合，可以测量来自培养物的单个 LCD 的 δ2H，这表明与生长水的氢同位素组成和物种特异性效应相关。沿盐度梯度的环境样本的结果表明 LCD 的 δ2H 比率具有追踪水和海面盐度的氢同位素组成的潜力。