Iron (Fe) m/z

57

Germanium (Ge) m/z

72

Radio frequency (RF) power

1.3 kW

Argon (Ar) cool gas flow

Typically 16 L/min

Ar plasma gas flow

Typically 0.80 L/min

Ar nebulizer gas flow

Typically 0.8 – 1.1 L/min

Nebulizer

PFA-100 micro flow

Spray Chamber

Cyclonic

Detector mode

Dual

Measurement units

cps

Peristaltic pump speed

12 R/min

Peristaltic Pump Tubing

Black-black (0.76 mm i.d. x 150 mm 2-stop, PVC)

Sample uptake time

120 s

Wash time

120 s

Resolution mode

Medium

Sample time

20 ms

Samples/peak

30

Mass Window

300 (⁵⁷Fe and ⁷²Ge)

Search Window

60 (⁵⁷Fe), 10 (⁷²Ge)

Integration Window

20(⁵⁷Fe), 20(⁷²Ge)

Acquisition points

10

Scan type

EScan

*The parameters were adjusted to optimize system response on a run-by-run basis.