黒鉛炉原子吸光法による銀と銅の同時定量

概要

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The simultaneous determination of silver and copper by graphite furnace AAS was investigated by utilizing the difference of appearance temperature. Silver was atomized earlier in graphite furnace than copper and each absorption peak was separated on the absorbancetime profile. Since the resonance lines of silver (328.07 nm) and copper (327.40 nm) are too close to separate by the monochromator used for conventional AAS, the radiation of silver and copper from hollow cathode lamps could be introduced in the same spectral bandwidth of the monochromator. When the mixed radiation was passed through the graphite furnace, two peaks corresponding for silver and copper appeared in the absorbance-time profile. The addition of palladium or platinum to the sample solution as matrix modifier could enhance the absorbance of silver and improve the separation of both peaks without mutual interference. By measuring each peak height on the absorption profile, the simultaneous determination of silver and copper could be achieved.
社団法人日本分析化学会の論文
1989-08-05