Sauna, sweat and science – quantifying the proportion of condensation water versus sweat using a stable water isotope (2H/1H and 18O/16O) tracer experiment

Sauna, sweat and science – quantifying the proportion of condensation water versus sweat using a stable water isotope (2H/1H and 18O/16O) tracer experiment
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桑拿、汗水和科学 â 使用稳定水同位素(2H/1H 和 18O/16O)示踪实验量化冷凝水与汗水的比例

DOI:
10.1080/10256016.2015.1057136
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发表时间:
2015
影响因子:
1.3
通讯作者:
Tuthorn
Tuthorn
中科院分区:
环境科学与生态学4区
文献类型:
--
作者:
Michael;Boesel;Stefanie;Tuthorn

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大多数桑拿浴室的游客都喜欢将水倒在桑拿炉的石头上时感受到的热脉冲。然而,可能只有少数沐浴者知道这种令人愉快的热脉冲是由于水蒸气凝结而释放到我们皮肤上的潜热引起的。为了量化测试人员的冷凝水与汗液和滴水的比例,我们使用同位素标记(δ18O 和 δ2H)的泼水作为示踪剂进行了桑拿实验。这样可以区分“纯汗水”和“冷凝水”。应用两种同位素质量平衡计算方法,对两种水同位素产生相似的结果。因此,根据计算同位素质量平衡的方式,在2011/12冬季学期的桑拿实验中,冷凝对滴水的平均比例分别为52±12和54±7 %,在2012/13冬季学期的桑拿实验中,冷凝对滴水的平均比例分别为30±13和33±6 %。从我们的双同位素标记桑拿实验的结果可以得出结论,这并不完全与桑拿中的汗水有关。
Most visitors of a sauna appreciate the heat pulse that is perceived when water is poured on the stones of a sauna stove. However, probably only few bathers are aware that this pleasant heat pulse is caused by latent heat being released onto our skin due to condensation of water vapour. In order to quantify the proportion of condensation water versus sweat to dripping water of test persons we conducted sauna experiments using isotopically labelled (δ18O andδ2H) thrown water as tracer. This allows differentiating between ‘pure sweat’ and ‘condensation water’. Two ways of isotope mass balance calculations were applied and yielded similar results for both water isotopes. Accordingly, condensation contributed considerably to dripping water with mean proportions of 52 ± 12 and 54 ± 7 % in a sauna experiment in winter semester 2011/12 and 30 ± 13 and 33 ± 6 % in a sauna experiment in winter semester 2012/13, respectively, depending on the way of calculating the isotope mass balance. It can be concluded from the results of our dual isotope labelling sauna experiment that it is not all about sweat in the sauna.
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