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Table 3 Performance parameters of the method to quantify selected alkaloids

From: Natural alkaloids from narrow-leaf and yellow lupins transfer to soil and soil solution in agricultural fields

Alkaloids Correlation coefficient (R2) Sensitivity (slope)a LOD (µg/L) LOQ (µg/L) Recovery % ± SEb ME %
Soil Waterc Soil Water
Sandy soil Sandy loam soil Glass fibre
Angustifoline 0.989 y = 148x 0.09 0.20 89 ± 6 79  ±  9 96 ± 7 92 ± 4 11 7
Cytisine 0.997 y = 74x 1.20 3.44 92 ± 8 84 ± 9 96 ± 5 90 ± 5 11 8
Gramine 0.990 y = 33x 0.02 0.38 90 ± 11 81 ± 9 95 ± 6 94 ± 7 10 12
Hydroxylupanine 0.993 y = 58x 0.25 0.64 87 ± 7 72 ± 7 92 ± 5 90 ± 5 14 13
Lupanine 0.986 y = 69x 0.03 0.11 88 ± 5 80 ± 8 96 ± 5 95±5 8 5
Lupinine 0.983 y = 97x 0.17 0.61 87 ± 9 72 ± 8 93 ± 6 89 ± 6 19 14
Matrine 0.992 y = 451x 2.11 4.22 90 ± 6 87 ± 8 93 ± 5 95 ± 7 12 7
Sparteine 0.982 y = 75x 0.21 0.73 85 ± 10 77 ± 8 94 ± 8 92 ± 6 14 12
  1. ME matric effect
  2. aAverage of linear regression of three injections
  3. bAverage recovery ± standard deviation (SE)
  4. cDe-mineralized water