锂同位素在水环境领域的研究进展

被引:6
作者
李雪 [1 ]
周伦 [2 ]
蔺洁 [3 ]
高旭波 [1 ,3 ]
机构
[1] 中国地质大学(武汉)环境学院
[2] 四川地质工程勘察院环境工程中心
[3] 中国地质大学(武汉)地质过程与矿产资源国家重点实验室
关键词
锂同位素; 分馏; 水环境; 示踪;
D O I
10.13578/j.cnki.issn.1671-1556.2016.03.001
中图分类号
X143 [环境水文学];
学科分类号
081501 ;
摘要
近年来有关锂同位素的研究及其应用已成为水环境领域研究的热点问题之一。锂的两个稳定同位素(6 Li和7 Li)之间相对质量差较大,容易产生明显的同位素分馏,研究表明温度是控制锂同位素分馏的关键因素,扩散驱动以及配位数差异也会对锂同位素分馏产生重大影响。自然界中锂同位素的组成变化很大,δ7 Li值在-40‰+50‰之间变动,不同地质体的δ7 Li值的明显差异使锂同位素的应用范围更加广泛。锂元素较高的化学活动性决定了它能够积极地参与各种水环境演化过程,并被作为新的示踪工具应用于环境水体污染、水循环以及卤水形成与演化等领域。概述了锂同位素作为良好的示踪工具在水环境领域取得的最新研究成果,以期为拓展锂同位素在环境地质方面的应用研究提供借鉴。
引用
收藏
页码:1 / 9+16 +16
页数:10
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