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. 2019 Jul 25;15:81. doi: 10.1186/s13007-019-0467-z

Table 3.

Levels of karrikins (KAR1 and KAR2) determined in smoke water samples using the standard addition method

Samples Calibration curve (KAR1) R2 KAR1 (nmol/l) Calibration curve (KAR2) R2 KAR2 (nmol/l) KAR1:KAR2 ratio
SW1_1993 y = 9.42*1012 (± 1.2*1011)x + 1.1*105 (± 4.2*104) 0.997 11.7 ± 4.3 y = 3.2*1012 (± 1.2*1011)x + 6.9*104 (± 1.1*104) 0.992 21.7 ± 2.7 0.5
SW2_1998 y = 9.1*1012 (± 1.0*1011)x + 3.0*105 (± 1.0*104) 0.999 32.5 ± 1.4 y = 5.3*1012 (± 7.0*1010)x + 1.5*105 (± 1.9*104) 0.998 28.9 ± 4.1 1.1
SW3_1994 y = 3.9*1012 (± 4.1*1010)x + 2.5*105 (± 5.5*103) 0.999 63.2 ± 1.5 y = 2.6*1012 (± 2.7*1010)x + 2.3*105 (± 3.8*103) 0.999 88.7 ± 1.4 0.7
SW4_1999 y = 1.1*1013 (± 5.7*1010)x + 1.1*105 (± 4.5*103) 0.998 9.4 ± 0.4 y = 7.0*1012 (± 3.6*1010)x + 10.0*104 (± 1.1*104) 0.999 14.3 ± 1.5 0.7
SW5_2003 y = 5.7*1012 (± 4.9*1010)x + 4.2*105 (± 1.8*104) 0.999 74.4 ± 3.7 y = 3.8*1012 (± 4.2*1010)x + 2.4*105 (± 1.1*104) 0.999 64.2 ± 3.5 1.2
SW6_2003 y = 3.9*1012 (± 6.2*1010)x + 3.7*105 (± 1.4*104) 0.999 101.6 ± 7.9 y = 2.5*1012 (± 3.6*1010)x + 7.1*104 (± 2.2*103) 0.999 28.8 ± 1.7 3.5
SW7_2003 y = 1.0*1013 (± 5.5*1010)x + 1.6*106 (± 5.0*104) 0.984 nd y = 9.5*1012 (± 1.4*1011)x + 6.9*105 (± 7.9*104) 0.998 nd
SW8_2004 y = 1.0*1013 (± 1.6*1011)x + 1.7*106 (± 5.3*104) 0.990 nd y = 9.5*1012 (± 1.3*1011)x + 8.8*105 (± 5.2*104) 0.999 nd