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Table 1 Mercury concentrations and mineral compositions of the raw samples and fractions

From: Assessment of mercury pollution sources in beach sand and coastal soil by speciation analysis

Sample

Fraction (µm)

% wt

Hg (µg g−1)

Mineral

Fraction

Raw sample

A1

800–224

31

0.16

10.9

Quartz (SiO2) fluorite (CaF2), calcite (CaCO3)

224–125

67

14.0

< 125

2

16.6

A2

800–224

23

0.44

5.01

Quartz, fluorite, calcite, barite (BaSO4)

224–125

76

3.37

< 125

1

20.5

S1

800–224

30

8.96

23.1

Quartz, fluorite, calcite, barite

224–125

68

28.2

< 125

2

31.6