摘要
提出了增感效应导数火焰原子吸收光谱测定金属铜和铜合金中微量铬的新方法。研究了表面活性剂十二烷基硫酸钠（ＳＤＳ）对铬的增感效果。导数技术与增感效应相结合可使火焰原子吸收光谱的灵敏度提高６８倍。本法测定金属铜和铜合金中的微量铬取得了满意效果。
A new method for the determination of trace chromium in copper and copper alloy by enhancing effect-flame atomic absorption spectrometry with derivative technique is pro- posed. The enhaning effect of sodium dodectyl sulfate on chromium was investigated. The sensitivity for the determination of chromium was enhanced 68 times than that of convention- al flame atomic absorption spectrometry. The detection limit of this method is 0. 0076 mg/L. The method has been applied to the determination of Cr in the samples with satisfactory re- sults.
出处
《分析化学》
SCIE
EI
CAS
CSCD
北大核心
1998年第4期410-413,共4页
Chinese Journal of Analytical Chemistry
关键词
增感效应
导数
火焰原子吸收
测定
铜合金
铬
Enhancing effect, derivative flame atomtic absorption spectrometry, copper, copper alloy, chromium
