Agilent Technologies 7500 ICP-MS

4-48
Agilent 7500 ICP-MS ChemStation Operator’s Manual
Tuning
Typical values of Tuning Parameters in the Standard Mode
(with ShieldTorch, Micro Mist Nebulizer)
Typical values of Sensitivity (Standard Mode)
Parameter Typical Value Adjustment
RF Power (W) 1500 Normally used 1500
Sampling Depth (mm) 8 7 to 10
Carrier Gas (L/min) 0.9 Normally used 0.9
Makeup Gas (L/min) 0.15 0.1 to 0.3
PeriPump 1 (rps) 0.1
S/C temp (
ºC)
2
Normally used at 2ºC
Extract 1 (V) 4.0 2 to 6
Extract 2 (V) -140 -140 to -110
Omega Bias-ce (V) -22 -30 to -16
Omega Lens-ce (V) 1.2 -2 to 3
Cell Entrance (V) -26 -40 to -20
QP Focus (V) 2 -2 to 4
Cell Exit (V) -30 -45 to -20
OctP RF (V) 150 100 to 200
OctPBias (V) -6 -12 to -6
QP Bias (V) -3 -5 to -3
(3V positive than OctP Bias)
Mass Count/1 ppb
Integration time = 0.1 sec.
RSD
7
Li
> 2000 < 15%
89
Y
>6000 < 15%
205
Tl
>3000 < 15%