摘要
为辨别环境动态变化而进行的多期次环境地球化学填图要求降低不同期次数据间的分析误差。为达此目的,本文提出了衡量各实验室分析质量的新的考核标准,包括:一组标准样不同元素分析值与标准值对数偏差的不合格率;一组标准样不同元素分析值与标准值的相关系数所反映的相似性系数;一组标准样各种元素分析值与标准值在虚拟空间上图形分布的相似性。
Multi-period environmental geochemical mapping for obtaining a continuous record of environ-mental change requires the reduction of between -period analytical bias(variable bias).Criteria are developed to run the pro ficiency test for analytical laboratories involved in such kind of work.These include(1)the rate of unqualification of △logC,(2)the similarity coeff icient calculated as the correlation coefficient be-tween element values of a group of standard reference samples and values of these samples determined by different laboratories,and(3)the similarity of maps composed of elemen t values of many standard refer-ence samples in virtualized spatial distribut ion with maps composed of element values determined by differ-ent labs.
出处
《地质通报》
CAS
CSCD
北大核心
2003年第1期1-11,共11页
Geological Bulletin of China
基金
中国地质调查局地质调查项目(1212010330206)
