Concentration (mg kg-1) Accuracy
  Precision
Trueness (relative bias %) Repeatability (% RSD) Intermediate precision (% RSD)
Std He Std He Std He
0.06 (½ LOQ) 26 9.9 36 26 38 26
0.13 (LOQ) 2.8 -1.0 8.0 11 11 14
0.26 (2x LOQ) 9.0 3.0 3.9 8.2 7.1 8.2
0.747 -13 -12 7.0 5.5 9.3 12
1.3 -3.2 -8.7 5.0 5.1 6.4 8.3
3.5 -1.1 -3.3 8.3 9.3 9.6 9.8
3.9 1.7 0.3 4.5 4.0 4.5 4.2
Table 5: Comparison of performance characteristics achieved in standard and He modes.