|
Parametera
|
Current study
|
Song et al., 2005b [21]
|
|---|
|
pH
|
2.5
|
2.77 – 3.25
|
|
Temperature (°C)
|
69.0
|
49.8 – 85.1
|
|
TDS
|
707
|
177 – 1674
|
|
EC (μS/cm2)
|
1760
|
266 – 1039
|
|
ORP (mv)
|
−62
|
–
|
|
DOC
|
1.0
|
–
|
|
HCO3
2−
|
<0.03
|
L
|
|
NO3−
|
–
|
L – 0.9
|
|
PO4
3−
|
–
|
L
|
|
Cl− and other halides
|
9.3
|
L (F−) / 4.93 – 10.3 (Cl−) / L – 3.78 (Br−)
|
|
SO4
2−
|
378
|
100 – 450
|
|
S0
|
0.50
|
–
|
|
H2S
|
52.7
|
–
|
|
S2O3
2−
|
0.12
|
–
|
|
Fe2+ and Fe3+
|
111
|
1.8 – 54.9 (Fe2+)
|
|
Ca2+
|
1.32
|
5.8 – 977
|
|
Na+
|
12.0
|
L – 13.4
|
|
Mg2+
|
1.21
|
1.21 – 9.70
|
|
K+
|
2.17
|
1.40 – 6.00
|
|
Al3+
|
19.0
|
0.70 – 17.3
|
|
Total As
|
0.0012
|
–
|
- “L” represented concentrations below detection limits
-
TDS total dissolved solids, EC electrical conductivity, ORP oxidation/reduction potential, DOC dissolved organic carbon
-
aUnits were mg/L for all end points except pH
-
bSource: Geological survey and potential application of hot springs and geothermal energy of Yangmingshan (in Chinese); monthly report of environmental parameters in the SHP acidic hot springs in 2005
