Compound

Calibration range
(ng mL^–1)

Calibration curve equation

r²

LOD
(µg kg^–1)

LOQ
(µg kg^–1)

MQCA

2-200

y=0.7878x+10.49

0.9900

4.8

15.9

QCT

2-200

y=4.656x+42.244

0.9869

2.6

8.6

4-DQCT

2-200

y=5.5825x+24.919

0.9903

2.2

7.3

1-DQCT

2-200

y=8.491x+21.195

0.9988

1.4

4.6

DQCT

2-200

y=10.733x+160.72

0.9892

1.7

5.7