單項選擇題下述哪種干擾在AFS中比在AAS中更嚴(yán)重（）

A.散射干擾
B.背景干擾
C.物理干擾
D.化學(xué)干擾


你可能感興趣的試題

2.單項選擇題下列哪種原子熒光是反Stokes熒光（）

A.Cr吸收359.35nm，發(fā)射357.87nm
B.Pb吸收283.31nm，發(fā)射283.31nm
C.Pb吸收283.31nm，發(fā)射405.78nm
D.In吸收377.55nm，發(fā)射535.05nm

4.單項選擇題One of the main advantages of a graphite-furnace atomizer is that（）

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

5.單項選擇題The purpose of the ashing step in graphite-furnace atomic-absorption spec-troscopy is to（）

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