表3 •
ICP-MS、ICP-AES与
AAS方法检出限的比较(mg/L)
Element
ICP-MS ICP-AES Flame
AAS GF
AASAs <0.050 <20 <500 <1
Al <0.010 <3 <50 <0.5
Ba <0.005 <0.2 <50 <1.5
Be <0.050 <0.5 <5 <0.05
Bi <0.005 <20 <100 <1
Cd <0.010 <3 <5 <0.03
Ce <0.005 <15 <200000 ND
Co <0.005 <10 <10 <0.5
Cr <0.005 <10 <10 <0.15
Cu <0.010 <5 <5 <0.5
Gd <0.005 <5 <4000 ND
Ho <0.005 <1 <80 ND
In <0.010 <30 <80 <0.5
La <0.005 <0.05 <4000 ND
Li <0.020 <1 <5 <0.5
Mn <0.005 <0.5 <5 <0.06
Ni <0.005 <10 <20 <0.5
Pb <0.005 <20 <20 <0.5
Se <0.10 <50 <1000 <1.0
Tl <0.010 <30 <40 <1.5
U <0.010 <30 <100000 ND
Y <0.005 <0.5 <500 ND
Zn <0.02 <1.0 <2 <0.01
ICP-MS, ICP-AES, Flame
AAS: Detection limits (defined on the basis of 3 standard deviations of the
blank)
GF
AAS: Sensitivity (0.0044 absorbance) measured with 20 L of sample
ND: Not determined