摘要
多接收电感耦合等离子体质谱(MC-ICP-MS)的应用已在金属稳定同位素分析方法上取得重大突破,促进了金属稳定同位素地球化学的快速发展。铁同位素作为一种新的同位素示踪体系,已广泛应用于主要的地球科学及其分支学科的研究中。目前,MC-ICP-MS对铁同位素的日常测定精度可以达到±0.03‰,但化学纯化和仪器分馏引起的质量偏差很容易引起较大的分析误差。因此,准确获取天然样品的铁同位素组成数据仍然是一个挑战。笔者系统回顾了铁同位素分析技术的发展,详细描述了铁同位素分析过程,包括化学纯化过程、仪器质量歧视校正和基质效应的规避等。
The use of multi-collector inductively coupled plasma mass spectrometry(MC-ICP-MS)paved the way in the stable isotope analysis of metals,promoting the rapid development of non-traditional stable isotope geochemistry,among which,Fe isotope has received the greatest attention.This surge of study has been fueled largely by the redox-sensitive nature of iron as well as its availability in life.The research on the distribution and isotopic compositions of iron has covered almost all sub-branches of earth science,ranging from biochemistry to geochemistry.The MC-ICP-MS instrument has been demonstrated to be very efficient in determining trace element compositions in a wide variety of applications.However,many questions,such as chemical purification,mass bias correction and efficiently avoid of matrix effects,remain challenging.
作者
霍金晶
韩延兵
HUO Jinjing;HAN Yanbing(School of Resources and Environmental engineering, Hefei University of Technology, Hefei 230009, Anhui,China;Xi'an Center of China Geological Survey, Northwest China Center for Geoscience Innovation, Xi'an 710054, Shaanxi,China)
出处
《西北地质》
CAS
CSCD
北大核心
2021年第4期280-289,共10页
Northwestern Geology
基金
国家自然科学基金项目“大别苏鲁造山带超高压变质大理岩及其包裹榴辉岩的Mg同位素地球化学”(41703006)
中央高校基本科研业务费专项项目“大陆风化过程中的K同位素地球化学行为研究”(JZ2019HGTB0071)。
