摘要
在地球陆地表面,钙在各个圈层尺度上都是一种关键元素:它可溶于水,既是生物生长发育所必需的营养元素,也是非生物营养物和海洋中碳主要矿物库(CaCO3)的主要成分。在自然界中,δ44/40Ca存在4‰的同位素分馏,因此,钙同位素组成在过去和现在都是一种很有前途的钙循环示踪物,同时,钙同位素在古海水演化、考古学、古气候重建等科学研究领域也有着广阔的应用前景。但由于技术手段以及钙同位素本身存在一定的研究局限,因此,对于钙同位素的研究还在不断深入探索过程中。文章对非传统稳定同位素--Ca进行了阐述。
On the surface of the earth’s land, Ca is a key element on every scale of the circle: it is soluble in water and is an essential nutrient for biological growth and development. It is also a major component of abiotic nutrients and the main carbon mineral pool(CaCO3)in the ocean. In nature, δ44/40 Ca has a isotope fractionation of 4 ‰. Therefore, the calcium isotope composition is a promising calcium cycle tracer in the past and present. At the same time, the calcium isotope evolution in ancient sea water, archaeology, paleoclimate reconstruction and other scientific research fields also have broad application prospects. However, due to the technical means and calcium isotope itself, there are some limitations in the study. Therefore, the research on the calcium isotope is still in the process of further exploration. The nontraditional stable isotope:Ca is described in this paper.
作者
王萌
Wang Meng(Institute of Geographical Sciences,Nanjing Normal University,Nanjing 210023,China)
出处
《江苏科技信息》
2019年第12期34-36,共3页
Jiangsu Science and Technology Information
关键词
钙同位素
分馏过程
地质应用
calcium isotope
fractionation process
geological application
