マグネシウムのフレーム原子吸光分析における塩化ラウリルピリジニウムの添加効果

概要

論文の詳細を見る
Magnesium is generally efficiently determined by AAS using any flame, but some foreign ions is known to interfere with the air-acetylene flame. In particular, a large quantity of Ca raises the response of Mg, while phosphate depresses it. When laurylpyridinium chloride (LPC) was added to Mg solution to reach 7.5 × 10^<-2> M, the atomic absorption of Mg was highly enhanced and the interference of Ca and/or phosphate was overcome. LPC decreases the surface tension of the solution, and then the sample uptake rate is increased and the spray droplet is decreased. So, the sensitivity of Mg absorption is increased. Enhancement effect of LPC may also be attributed to the reducing action of the CN radical formed in the flame by decomposition of LPC. Mg in several foodstuffs could be efficiently determined by the present method.
社団法人日本分析化学会の論文
1988-12-05