Standard addition concentration (μg/kg)

Background value (μg/kg)

Mean (μg/kg)

Recovery rate (%)

Coefficient of variation (%)

GB/T27404-2008 [27]

(%)

Linear equation

Correlation

r

Detection limit (μg/kg)

Recovery rate

Coefficient of variation

30

0

32.1

107.1

0.4

60 - 120

15 - 21

Y = 0.36021X + 0.018416

0.9991

0.684

60

61.3

102.2

0.7

15 - 21

100

97.2

96.9

0.7

15 - 21