. 2016 Feb 3;6:20551. doi: 10.1038/srep20551

Table 4. Instrument tune parameters for ICP-MS QQQ.

No gas mode		He mode		O₂ mode
Forward power	1450 W	Forward power	1500 W	Forward power	1600 W
Nebulizer gas flow	1.0 L/min	Nebulizer gas flow	1.0 L/min	Nebulizer gas flow	1.0 L/min
Extract 1	0.0 V	Extract 1	0.5 V	Extract 1	0.0 V
Extract 2	−140 V	Extract 2	−165.5 V	Extract 2	−200.0 V
Isotopes monitored	²³Na, ²⁴Mg, ³⁹K, ⁴³Ca, ⁴⁴Ca, ⁴⁵Sc, ⁸⁵Rb & ⁸⁷Rb	Isotopes monitored	²³Na, ²⁴Mg, ⁴⁵Sc ⁴³Ca, ⁴⁴Ca, ⁵⁵Mn, ⁵⁶Fe, ⁶⁰Ni, ⁶³Cu, ⁶⁶Zn, ⁸⁵Rb, ⁸⁷Rb & ²⁰⁸Pb	Isotopes monitored	³¹P → ³¹P¹⁶O, ³²S → ³¹S¹⁶O
		Helium gas flow	3 ml min⁻¹	Oxygen gas flow (0.3 ml min⁻¹)	30%
OctP Bias	−8.0 V	OctP Bias	−18.0 V	OctP Bias	−5.0 V
OctP RF	150 V	OctP RF	150 V	OctP RF	200 V
Energy discrimination	5.0 V	Energy discrimination	5.0 V	Energy discrimination	−7.0 V