黒鉛炉原子吸光法を用いるインジウム及びガリウムの定量における硫酸塩干渉の抑制

概要

論文の詳細を見る
A mixture of ammonium-EDTA, nickel and aluminium nitrates is suitable as a matrix modifier for the removal of sulfate interference in the determination of indium and gallium by graphite furnace AAS. Nickel and aluminium nitrates act as a thermal stabilizer for the analyte in the furnace before atomization. Since analyte and other cations are masked by EDTA, the coexisting sulfates are converted to ammonium salt, which is readily decomposed and eliminated from the furnace during the ashing step. In the presence of 0.1 M nickel nitrate, 0.001 M aluminium nitrate and 0.1 M ammonium-EDTA, when the concentration of sodium and potassium sulfates are below 0.02 M, the interferences of these sulfates are completely removed.
社団法人日本分析化学会の論文
1994-08-05