摘要
在总氮的测定过程中,空白测试是必不可少的分析试验,然而,在实际操作应用的过程中,发现空白值经常存在偏高的情况,加大了系统误差。因此,如何降低空白值、保证分析样品的精密度和准确度成为关键之一。从试剂影响、器皿影响、操作过程的影响及环境影响等方面进行全面论述分析,并以实验数据予以验证,在此基础上笔者提出降低空白值的手段和措施,以指导实验室操作实践。
Blank test as a necessary analytical method in the measurement of TN was overall discussed with aspect of agent impact, container impact, operational process impact and environment impact, with experiment data as verification. The measures to decrease blank value were also proposed for operational practice of laboratory.
出处
《环境科学与技术》
CAS
CSCD
北大核心
2005年第B06期46-48,58,共4页
Environmental Science & Technology
