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Table 1 Regression equations, correlation coefficients, linear ranges and detection limits

From: Bioaccessibility and risk assessment of heavy metals, and analysis of arsenic speciation in Cordyceps sinensis

Analyte

Linear equation

R 2

Linear range (µg L−1)

LOD (µg L−1)

LOQ (µg L−1)

Cu

Y = 38371.1x + 1119.4

0.9999

0.02–200

0.007

0.020

Pb

Y = 230129.3x + 32337.6

0.9996

0.10–20

0.026

0.100

As

Y = 2504.2x + 32.7

0.9999

0.02–20

0.010

0.030

Cd

Y = 30243.4x + 300.6

0.9998

0.02–20

0.005

0.020

Hg

Y = 34165.1x + 84.7

0.9973

0.02–5

0.006

0.020