Determination of 25 Trace Element Concentrations in Biological Reference Materials by ICP-MS following Different Microwave-Assisted Acid Digestion Methods Based on Scaling Masses of Digested Samples

Table 1

Instrumental settings and calibration for ICP-MS.

ICP-MS instrument
Forward power	1300 W
Sampler and skimmer cones	Nickel
Argon flow rates
Cool gas	14.5 L min^−1
Auxiliary	0.76 L min^−1
Nebuliser	0.92 L min^−1
Acquisition parameters
Ion monitoring mode
Number of sweeps	60
Channels per mass	1
Dwell time	10 ms
Number of main runs	3
Survey mode
Cannels per mass	10
Sweeps	10
Dwell time	0.6 ms
Internal standards	^6Li, ^45Sc, ^115In, ^159Tb, ^209Bi