Jökull - 01.12.2007, Side 80

Thorsteinsson et al.
Table 4. – Results from chemical analysis of water run through drill system in Test 2. – Niðurstöður efnagrein-
inga á vatni úr borkerfinu, við prófun á Langjökli.
Units Method* Drill inlet Drill outlet Tap water
T [!C] 0 90 –
pH/!C 6.09/14.5 7.78/19.0 5.71/21.5
EC/!C 5.12/16.0 2.23/18.9 3.40/21.9
Major ions
H2S ppm Col <0.01 <0.01 <0.01
F" ppm IC 0.033 0.020 0.033
SO2"4 ppm IC 0.054 0.052 0.054
Cl" ppm IC 0.251 0.275 0.263
Ca2+ ppm ICP-AES,IC <0.1 <0.1 <0.1
K+ ppm ICP-AES,IC 0.049 0.046 0.038
Mg2+ ppm ICP-AES,IC <0.03 <0.03 <0.03
Na+ ppm ICP-AES 0.366 0.318 0.296
SiO2 ppm ICP-AES <0.06 <0.06 <0.06
Nutrients
NO"3 ppb IC 97 37 58
NO"2 ppb IC 0.4 0.4 <0.4
PO2"4 ppb IC <3 <3 3.7
NH+4 ppb Col 7 12 26
Trace metals
Al ppb ICP-SFMS 1.5 2.2 2.3
As ppb ICP-SFMS <0.3 <0.3 <0.3
B ppb ICP-SFMS 0.63 0.49 0.28
Ba ppb ICP-SFMS 0.12 0.17 <0.01
Cd ppb ICP-SFMS 0.0094 0.013 0.0062
Co ppb ICP-SFMS <0.002 0.026 <0.002
Cr ppb ICP-SFMS 0.123 0.127 0.036
Cu ppb ICP-SFMS 0.25 0.83 1.31
Fe ppb ICP-SFMS 3.1 2.1 1.3
Hg ppb ICP-SFMS <0.01 <0.01 <0.01
Mn ppb ICP-SFMS 0.13 6.55 0.08
Mo ppb ICP-SFMS 0.22 0.20 2.00
Ni ppb ICP-SFMS 0.19 0.65 0.27
Pb ppb ICP-SFMS 0.505 0.628 0.054
Sr ppb ICP-SFMS 0.054 0.089 0.033
Ti ppb ICP-SFMS 0.16 0.12 0.12
V ppb ICP-SFMS 0.059 0.039 0.011
Zn ppb ICP-SFMS 18.4 60.2 4.01
* IC = Ion Chromatography
ICP-AES = Inductively Coupled Plasma Atomic Emission Spectrometry
ICP-SFMS = Inductively Coupled Plasma Sector Field Mass Spectrometry
78 JÖKULL No. 57