Table 6: Measured concentration of Total Organic Carbon (TOC), formate, acetate, and a selection of individual semi-volatile organic compounds extracted from hydrothermal fluids of the Kulo Lasi and Fatu Kapa vent fields.

CompoundRt 
min
UnitsBlank 
Dry
Blank 
MQ
FU3-PL-14-TiG2 
deepsea water
FU3-PL-08-TiD2 
Stéphanie
FU3-PL-04-TiD3 
Stéphanie
FU3-PL-09-TiG2 
Stéphanie
FU3-PL-08-TiG3 
Carla
FU3-PL-06-TiG1 
Carla
FU3-PL-14-TiG1 
Idefix
FU3-PL-11-TiD3 
Idefix
FU3-PL-21-TiG2 
Fati Ufu
FU3-PL-17-TiD2 
Fati Ufu
FU3-PL-21-TiG1 
Fati Ufu
FU3-PL-21-TiG3 
Tutafi
FU3-PL-20-TiG1 
Tutafi

pH----3.834.655.424.174.913.974.94.224.264.693.654.14
Mg-mM--54.20.618.744.32.723.60.815.513.317.619.30.80.7

TOC-ppmna<0.005na0.165nananana0.498nana6.514na0.304na
Formate-ppbnandna65.8<LOQnanana<LOQ<LOQ111.7721.6na<LOQna
Acetate-ppbnandna1155.1543.2nanana1033.6995.11740.92308.8na1067.3na

Nonane4.68ppbndnd0.85 ± 0.511.59 ± 0.521.17 ± 0.511.08 ± 0.510.72 ± 0.510.58 ± 0.510.84 ± 0.510.52 ± 0.500.64 ± 0.500.50 ± 0.510.28 ± 0.511.52 ± 0.522.29 ± 0.54
Decane5.911ppbnd<0.032.21 ± 0.442.03 ± 0.442.02 ± 0.442.10 ± 0.443.05 ± 0.451.63 ± 0.446.92 ± 0.512.20 ± 0.446.47 ± 0.505.58 ± 0.482.88 ± 0.459.18 ± 0.5622.16 ± 0.95
Undecane7.183ppbnd<0.211.35 ± 0.976.79 ± 0.769.52 ± 0.8711.48 ± 0.9813.81 ± 1.149.61 ± 0.8723.13 ± 1.8810.89 ± 0.9419.13 ± 1.5526.06 ± 2.1412.26 ± 1.0320.48 ± 1.6626.93 ± 2.21
Dodecane8.394ppbndnd3.36 ± 0.651.33 ± 0.572.30 ± 0.602.98 ± 0.633.35 ± 0.652.64 ± 0.615.12 ± 0.763.35 ± 0.654.76 ± 0.736.52 ± 0.863.30 ± 0.654.00 ± 0.695.14 ± 0.76
Tridecane9.549ppbndnd1.39 ± 0.540.35 ± 0.530.73 ± 0.530.86 ± 0.531.37 ± 0.541.39 ± 0.541.63 ± 0.552.21 ± 0.571.75 ± 0.553.89 ± 0.652.27 ± 0.571.06 ± 0.541.42 ± 0.54
Tetradecane10.641ppbndnd0.53 ± 0.470.56 ± 0.470.57 ± 0.470.59 ± 0.470.67 ± 0.460.66 ± 0.460.59 ± 0.470.72 ± 0.460.69 ± 0.460.64 ± 0.460.72 ± 0.460.72 ± 0.460.70 ± 0.46
Pentadecane11.675ppbndnd0.44 ± 0.280.40 ± 0.280.48 ± 0.270.44 ± 0.280.52 ± 0.270.59 ± 0.270.43 ± 0.280.60 ± 0.270.57 ± 0.270.47 ± 0.280.49 ± 0.270.62 ± 0.270.58 ± 0.27
Hexadecane12.65ppbndnd0.25 ± 0.730.40 ± 0.740.42 ± 0.730.49 ± 0.730.64 ± 0.730.59 ± 0.740.26 ± 0.730.84 ± 0.740.53 ± 0.730.39 ± 0.730.37 ± 0.730.65 ± 0.740.48 ± 0.73
Heptadecane13.576ppbndnd0.57 ± 0.321.08 ± 0.320.61 ± 0.320.87 ± 0.321.13 ± 0.330.85 ± 0.321.20 ± 0.331.48 ± 0.330.85 ± 0.320.67 ± 0.320.78 ± 0.321.10 ± 0.330.98 ± 0.32
Octadecane14.452ppbndnd0.17 ± 0.170.30 ± 0.180.28 ± 0.180.30 ± 0.180.35 ± 0.180.33 ± 0.180.39 ± 0.180.42 ± 0.180.49 ± 0.190.29 ± 0.180.25 ± 0.180.47 ± 0.180.50 ± 0.19
Nonadecane15.295ppbndnd1.08 ± 1.341.36 ± 1.351.24 ± 1.351.38 ± 1.341.64 ± 1.361.40 ± 1.361.33 ± 1.351.83 ± 1.381.26 ± 1.330.86 ± 1.331.02 ± 1.341.10 ± 1.331.36 ± 1.35
Eicosane16.104ppbndnd1.09 ± 1.231.75 ± 1.271.05 ± 1.250.94 ± 1.231.13 ± 1.241.69 ± 1.271.03 ± 1.241.46 ± 1.261.00 ± 1.230.71 ± 1.241.19 ± 1.241.25 ± 1.241.50 ± 1.26

Nonanoic acid6.914ppbndnd3.72 ± 2.538.07 ± 2.96<0.375.71 ± 2.674.49 ± 2.563.49 ± 2.504.91 ± 2.607.12 ± 2.878.94 ± 3.099.23 ± 3.10na2.86 ± 2.459.90 ± 3.21
Decanoic acid7.542ppbndnd1.17 ± 1.650.86 ± 1.59nd0.53 ± 1.600.41 ± 1.65nd0.61 ± 1.62nd0.84 ± 1.670.56 ± 1.68na1.09 ± 1.640.83 ± 1.66
Undecanoic acid8.178ppbndnd0.18 ± 0.190.29 ± 0.20nd0.23 ± 0.190.25 ± 0.200.28 ± 0.190.22 ± 0.20nd0.26 ± 0.190.34 ± 0.19na0.35 ± 0.200.33 ± 0.19
Dodecanoic acid8.773ppbndnd0.42 ± 0.482.10 ± 0.510.55 ± 0.480.55 ± 0.480.78 ± 0.480.49 ± 0.472.01 ± 0.510.69 ± 0.481.29 ± 0.491.08 ± 0.49na1.45 ± 0.490.61 ± 0.48
Tridecanoic acid9.31ppbndnd0.28 ± 0.200.35 ± 0.190.23 ± 0.210.24 ± 0.210.24 ± 0.200.33 ± 0.200.27 ± 0.200.25 ± 0.210.26 ± 0.210.32 ± 0.20na0.31 ± 0.190.27 ± 0.20
Tetradecanoic acid9.859ppbnd<0.060.94 ± 0.321.86 ± 0.311.44 ± 0.310.87 ± 0.330.92 ± 0.324.28 ± 0.351.41 ± 0.312.74 ± 0.310.90 ± 0.321.15 ± 0.32na1.42 ± 0.311.07 ± 0.32
Pentadecanoic acid10.355ppbndnd0.54 ± 0.301.44 ± 0.300.82 ± 0.280.46 ± 0.300.76 ± 0.290.57 ± 0.291.06 ± 0.290.58 ± 0.300.52 ± 0.300.78 ± 0.29na1.02 ± 0.290.77 ± 0.29
Hexadecanoic acid10.902ppbndnd1.46 ± 1.206.66 ± 1.374.47 ± 1.271.78 ± 1.203.90 ± 1.252.91 ± 1.237.30 ± 1.413.61 ± 1.243.24 ± 1.234.92 ± 1.29na6.09 ± 1.345.59 ± 1.32
Heptadecanoic acid11.317ppbndnd0.54 ± 0.613.23 ± 0.58nd0.89 ± 0.532.04 ± 0.541.82 ± 0.541.04 ± 0.621.62 ± 0.55<0.032.89 ± 0.59na2.87 ± 0.592.79 ± 0.57
Octadecanoic acid11.78ppbndnd0.94 ± 2.168.70 ± 2.826.32 ± 2.551.67 ± 2.326.36 ± 2.483.49 ± 2.3011.83 ± 3.295.15 ± 2.352.64 ± 2.095.26 ± 2.40na9.19 ± 2.869.66 ± 2.96

Ethyl, Benzene4.344ppbnd<0.1nd<0.1<0.1ndnd<0.1<0.1na0.10 ± 0.35<0.1<0.1nd0.44 ± 0.23
p-,m-Xylene4.443ppbndnd0.03 ± 0.050.10 ± 0.050.11 ± 0.050.08 ± 0.050.10 ± 0.050.11 ± 0.050.18 ± 0.05na0.33 ± 0.050.21 ± 0.050.15 ± 0.050.11 ± 0.050.71 ± 0.08
o-Xylene4.708ppbnd<0.020.02 ± 0.050.07 ± 0.060.06 ± 0.050.02 ± 0.060.03 ± 0.080.06 ± 0.050.14 ± 0.06na0.33 ± 0.070.19 ± 0.060.13 ± 0.060.06 ± 0.050.68 ± 0.09
Styrene4.831ppbndnd0.59 ± 0.140.22 ± 0.16ndnd0.46 ± 0.14nd0.29 ± 0.15na0.21 ± 0.150.20 ± 0.150.24 ± 0.140.37 ± 0.140.20 ± 0.14
isopropyl, Benzene5.006ppbndnd0.04 ± 0.050.06 ± 0.050.07 ± 0.050.07 ± 0.050.06 ± 0.050.08 ± 0.050.09 ± 0.05na0.09 ± 0.050.04 ± 0.060.05 ± 0.050.09 ± 0.050.09 ± 0.05
n-Propyl, Benzene5.468ppbndnd0.03 ± 0.040.02 ± 0.040.03 ± 0.040.02 ± 0.040.03 ± 0.040.03 ± 0.040.03 ± 0.04na0.04 ± 0.040.03 ± 0.040.03 ± 0.050.03 ± 0.040.04 ± 0.04
1,2,4-triMethyl-Benzene5.572ppbndnd0.03 ± 0.040.05 ± 0.040.06 ± 0.040.04 ± 0.040.06 ± 0.050.06 ± 0.040.04 ± 0.05na0.08 ± 0.040.07 ± 0.050.07 ± 0.040.08 ± 0.040.07 ± 0.04
1,3,5-triMethyl-Benzene5.95ppbndnd0.02 ± 0.060.11 ± 0.070.08 ± 0.070.06 ± 0.060.09 ± 0.060.09 ± 0.060.11 ± 0.06na0.30 ± 0.070.25 ± 0.060.20 ± 0.070.13 ± 0.060.19 ± 0.06
sec-Butyl-Benzene6.106ppbndnd0.27 ± 0.050.04 ± 0.04nd0.04 ± 0.050.05 ± 0.060.05 ± 0.050.06 ± 0.05nand0.05 ± 0.05ndnd0.07 ± 0.05
2,isopropyl, Toluene6.305ppbndnd0.07 ± 0.030.03 ± 0.030.03 ± 0.030.03 ± 0.030.05 ± 0.030.03 ± 0.030.04 ± 0.03na0.04 ± 0.030.04 ± 0.030.03 ± 0.030.05 ± 0.030.07 ± 0.03
n-Butyl, Benzene6.66ppbnd<0.080.06 ± 0.030.01 ± 0.030.01 ± 0.020.01 ± 0.030.02 ± 0.030.01 ± 0.020.02 ± 0.02na0.02 ± 0.030.02 ± 0.02nd0.03 ± 0.030.03 ± 0.03

Naphthalene8.351ppbnd<0.011.39 ± 0.070.49 ± 0.050.32 ± 0.050.13 ± 0.041.24 ± 0.070.69 ± 0.051.08 ± 0.06na0.90 ± 0.060.64 ± 0.051.99 ± 0.091.19 ± 0.061.19 ± 0.06
Acenaphthene11.796ppbndnd<0.009<0.009<0.009<0.009<0.009<0.009<0.009na<0.009<0.009<0.009<0.009<0.009
Fluorene12.778ppbndndnd0.05 ± 0.03<0.01<0.010.14 ± 0.030.10 ± 0.030.16 ± 0.03na0.14 ± 0.030.09 ± 0.030.06 ± 0.030.09 ± 0.030.07 ± 0.03
Phenanthrene14.582ppbndnd0.02 ± 0.040.10 ± 0.040.06 ± 0.040.06 ± 0.040.29 ± 0.050.13 ± 0.040.20 ± 0.05na0.16 ± 0.050.10 ± 0.040.06 ± 0.040.23 ± 0.050.17 ± 0.05
Anthracene14.788ppbndndndndndndndndndnandndndndnd
Fluoranthene17.117ppbndnd<0.04<0.04<0.04<0.040.06 ± 0.16<0.04<0.04na0.04 ± 0.16<0.04<0.040.05 ± 0.16<0.04
Pyrene17.52ppbndnd<0.030.03 ± 0.110.03 ± 0.10<0.030.14 ± 0.110.07 ± 0.100.10 ± 0.11na0.06 ± 0.100.05 ± 0.110.03 ± 0.100.09 ± 0.100.06 ± 0.10