Table 1 Characteristics of the two fluoride-rich groundwater samplesa.

From: Enhanced Defluoridation Using Novel Millisphere Nanocomposite of La-Doped Li-Al Layered Double Hydroxides Supported by Polymeric Anion Exchanger

Sample No.

Location

F−

Cl−

Br−

NO3−

SO42−

HCO3−

Total P

Total Si

pH

1

Yunnan

4.1

74.6

NDb

16.7

67.2

41.2

0.11

0.21

8.15

2

Shandong

10.0

ND

1.5

0.08

169

213

0.05

13.5

7.95

  1. aunit: mg/L except for pH.
  2. bND: not detected.
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