摘要
激光剥蚀电感耦合等离子体质谱(LA-ICP-MS)是目前地球科学分析领域的重要技术手段,元素微区分析标准物质研制是该分析技术发展的重要方向。本文对当前LA-ICP-MS元素微区分析标准物质的种类、元素分布以及应用上的优缺点和标准物质的制备方法进行了评述。现有的有证标准物质数量不多、种类不齐全,部分元素浓度较低,定值不确定度较大,应用上受到较大的局限性;研制标准也不成熟,均匀性检验方面尚未有统一的方法。本文参照岩石粉末标准物质均匀性检验方法提出了两步均匀性检验法,同时指出在标准物质种类方面,铂族元素及Au元素浓度适当、Pb-S等不同硫化物基体标准物质,以及化学成分不同的碳酸岩和磷酸岩基体标准物质是当前的迫切需求;在标准物质研制技术方面,纳米岩石粉末压片技术的研发、原位微区分析标准物质(固体)均匀性检验判别标准研究是亟待解决的问题。
Laser Ablation-Inductively Coupled Plasma-Mass Spectrometry（ LA-ICP-MS） is currently an important microanalysis technique in the geoscience field. Development of related reference materials is a key for this technique. In this paper,the types,elemental distribution,application limits and manufacture method of reference materials for LA-ICP-MS analysis were reviewed. Currently,there are limited accessible Certified Reference Materials（ CRMs）. Some of the CRMs have low elemental contents and large uncertainties,which has restricted their application. Meanwhile,manufacture methods are immature and the homogeneity test for microanalysis reference material did not reach an agreement. Based on the homogeneity test method for rock powder reference materials,a two-step homogeneity test method was proposed. PGEs and Au contents in reference materials should be appropriate. Reference materials for Pb-S sulfide matrix,carbonate and phosphate matrix with different chemical compositions are urgently needed. With respect the the manufacture method of reference materials,nano-powder tablet technology and homogeneity tests should be developed further.
出处
《岩矿测试》
CAS
CSCD
北大核心
2015年第5期503-511,共9页
Rock and Mineral Analysis
基金
中国地质大调查项目(12120113021500)
关键词
LA-ICP-MS
标准物质
熔融玻璃法
纳米粉末压片法
均匀性检验
Laser Ablation-Inductively Coupled Plasma-Mass Spectrometry（LA-ICP-MS）
reference materials
glass melting technique
nano-powder tablet technique
homogeneity test
