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Table 1 The intermediate standard solutions used to prepare working standards and correlation coefficients

From: Assessment of selected heavy metals in honey samples using flame atomic absorption spectroscopy (FAAS), Ethiopia

No

Metal

Intermediate

Standards (mg/L)

Working standards

(mg/L)

Correlation coefficient of calibration curves

1

Cu

10

0.02,0.5,1,1.5,2,2.5,3

R2 = 0.996

2

Zn

10

0.02,0.5,1,1.5,2,2.5,3

R2 = 0.991

3

Pb

10

0.01,0.2,0.4,0.6.0.8.1

R2 = 0.993

4

Cd

10

0.001,0.2,0.4,0.6,0.8,1

R2 = 0.996

5

Mn

10

0.02,0.5,1,1.5,2,2.5,3

R2 = 0.996

6

Cr

10

0.01,0.5,1,1.5,2,2.5,3

R2 = 0.992