Table 1 Physico-chemical parameters for two sampling sites, D9 and D10 (concentrations in mg/l, average of three measurements). The units are stated as followed T: °C, Eh: mV; conductivity: mS/cm2.

From: Ultra-small microorganisms in the polyextreme conditions of the Dallol volcano, Northern Afar, Ethiopia

Sample D9 D10
pH 0.25 2.42
T 86 47
Cond 188 262
Eh 411 412
H2% 0.02 0.13
CO2% 0 0.15
Na 119333 89323
Mg 3408 5998
Al 383 533
P 10.1 14.9
K 8248 16594
Ca 3810 5927
Mn 538 950
Fe 19159 35652
Cu 40.6 93
Zn 39.6 72
Rb 11.9 20.9
Sr 71.1 116.7
Pb 1.4 0.2