Table 2 Concentrations for major ions of the background and saline batch experiments (mg/L).

From: Arsenic mobilization in shallow aquifers due to CO2 and brine intrusion from storage reservoirs

Element

Background

Saline

Element

Background

Saline

Ca

5.2

222.1

Cl

28.0

2050.0

Fe

1.4 × 10−3

2.2 × 10−2

SO4

56.0

333.0

K

0.7

38.6

Si

<DL

<DL

Mg

2.8

220.4

As

<DL

1.5 × 10−4

Na

73.9

783.9

pH (unitless)

8.5

6.4