Detection Limits comparison of different ICP-OES

HORIBA ULTIMA 2	Thermo ICAP6300	Perkin Elmer 5000DV	Varian 710ES
Typical detection limits in ppb at 3 sigma Element Detection Limit Al 0.2 As 1.2 B 0.3 Ba 0.04 Be 0.05 Br 100 Ca 0.03 Cl 200 Co 0.20 Cr 0.20 Cu 0.20 Fe 0.20 K 1.5 M n 0.05 M o 0.2 Na 0.60 Ni 0.3 P 1.5 Pb 1.5 Sb 1.5 Se 1.5 Ti 0.2 Tl 1.0 V 0.2 Zn 0.2	MDL UNITS ELEMENT  As  0.0181 ppm Ca  0.029 ppm Cd 0.0012 ppm Co 0.0163 ppm Cr  0.0017 ppm Cu  0.0872 ppm Fe  0.1721 ppm Mn 0.0177 ppm Ni  0.0023 ppm Pb 0.0254 ppm V  0.002 ppm	Typical detection limits (D.L.) using the Optima 5000 DV series (ppb, 3 sigma). Element Wavelength (nm) D.L. Al 1.0 As 2.0 B 1.0 Be 0.09 Cd 0.1 Co 0.2 Cr  0.2 Cu 0.4 Fe 0.1 Mn 0.1 Mo 0.5 Ni  0.5 Pb 1.0 Sb 2.0 Se 3.0 Tl  2.0 V  0.5 Zn 0.2	Element  MDL ppb Ag 328.068 0.5 Al 237.312 5 As 188.980 1 Ba 585.367 0.6 Be 313.042 0.009 Ca 315.887 1 Cd 214.439 0.09 Co 228.615 0.4 Cr 267.716 0.2 Cu 324.754 0.7 Fe 238.204 0.3 K 769.897 2 Mg 285.213 0.4 Mn 257.610 0.06 Na 589.592 0.6 Ni 231.604 0.7 Pb 220.353 0.8 Sb 206.834 1 Se 196.026 1 Tl 190.794 1 V 292.401 0.3 Zn 206.200 0.5