论文部分内容阅读
微量元素与人体健康是本世纪七十年代以来医学界研究得极其活跃的新课题,它们间内在关系的揭示将有助于临床诊断。关于微量元素铅和儿童行为的关系如何,近年来颇受重视,因此探讨准确测定全血中铅已成为相当重要。早在1972年Kubasik提出全血中铅用Triton x-100稀释,由碳棒原子化器测定,之后Fetnandez用同样方法在HGA 2100石墨上进行全血铅的分析,但都未能解决严重的背景吸收干扰。1977年Lvov提出平台技术,使试样在等温区原子化,Ediger提出在试样中加入基体改进剂能提高被测元素的灰化温度,从而降低基体的干扰。无焰原子吸收技术由于Lvov平台技术使用和基体改进剂的加入,使干扰大大减小,精度明显提高,又避免了繁琐的标准加入法,
Microelements and human health are new topics in the medical field that have been extremely active in research since the 1970s. The revelation of their interrelationship will help clinical diagnosis. In recent years, the relationship between the trace elements lead and children’s behavior has drawn much attention. Therefore, it is very important to explore the accurate determination of lead in whole blood. As early as 1972, Kubasik proposed that lead in whole blood be diluted with Triton x-100 and determined by a carbon rod atomizer. Fetnandez then performed whole blood lead analysis on HGA 2100 graphite in the same manner, but failed to resolve the serious background Absorb interference. In 1977, Lvov proposed the platform technology to atomize the sample in the isothermal region. Ediger proposed to add the matrix modifier to the sample to increase the ashing temperature of the tested element so as to reduce the interference of the matrix. Flameless atomic absorption technology due to Lvov platform technology and the use of matrix improvers, the interference greatly reduced, significantly improve the accuracy, but also to avoid the cumbersome standards to join the law,