A1型题

下列跃迁形式中，哪一种产生的是共振荧光（）

A.It requires only very small quantities of a sample
B.It requires metal.ions in aqueous solution
C.It does not produce background emission like a flame
D.It does not get hot like a flame

A.Vaporize metal atoms to be analyzed
B.Cause the metal species to form carbides which are more volatile
C.Convert the graphite furnace to ash to avoid carbide formation
D.Burn off organic species that would interfere with the elemental analysis

A.Purify the sample
B.Desolvate and atomize the analyte atoms in a sample
C.Excite the analyte atoms
D.Ionize the analyte atoms