摘要
研究了硝酸铋在石墨炉内石墨探针表面上的原子化机理，结果表明．硝酸铋首先分解为氧化铋，后者被碳还原生成铋，铋再蒸发进入气相，经历二聚体，尔后分解为气态铋原子。
The atomization mechanism of bismuth nitrate from graphite probe surface in the graphite furnace was studied and a mechanism for the formation of Bi atoms is proposed. The mechanism is primarily a thermal decomposition of Bi(NO3) 3 at about 900K to form Bi2O3, followed by thermal dissociation of Bi2O3 to form a simple substance of bismuth at about 1 500K. The latter is vaporized into gas phase to form dimer of bismuth Bi2 and then Bi2 is dissociated to form bismuth atom.
出处
《清华大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
1992年第6期106-112,共7页
Journal of Tsinghua University(Science and Technology)
基金
国家自然科学基金
关键词
铋
原子化机理
石墨探针
bismuth, atomization mechanism, graphite probe, graphite furnace atomic absorption spectrophotometry
