We highlight the potential for first row transition metals to carry paleohydrological signals in speleothems, and argue that these metals constitute valuable proxies for climate reconstructions. Metal availability to speleothems is hypothesised to be restricted by organic complexation, which strongly limits the free ion activity of transition metals (Co, Ni and Cu) in dripwater, thereby creating a kinetic overprint on metal concentrations and isotope ratios in speleothem calcite.

中文翻译：

---

有机物络合对过渡金属分配到方解石中的影响：模拟洞穴晶体生长实验

我们强调第一排过渡金属在洞穴中携带古水文信号的潜力，并认为这些金属构成了气候重建的有价值的代表。推测洞穴体中金属的可用性受到有机络合的限制，有机络合强烈限制了滴水中过渡金属（Co、Ni和Cu）的自由离子活性，从而在洞穴体方解石中的金属浓度和同位素比率上产生了动力学叠印。