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Table 2 Range of measured lead concentrations by cup

From: A pilot study to assess lead exposure from routine consumption of coffee and tea from ceramic mugs: comparison to California Safe Harbor Levels

Cup Name

Lead Concentration (μg/L)

 

Min

Max

Mean

Median

Black Logo1

<0.2

0.2

0.18

0.2

Black Logo2

0.2

0.2

0.2

0.2

Green Decorative

0.8

8.6

2.05

1.45

Yellow Decorative

0.2

0.4

0.23

0.2

Red Decorative

<0.2

0.3

0.21

0.2

Glass

<0.2

0.3

0.2

0.2

  1. Concentrations reported to be below the limit of detection (<0.2 μg/L) were assumed to have a value of the limit of detection divided by the square root of two (0.1 μg/L) in statistical analyses