FN Archimer Export Format
PT J
TI Analysis of hydrogen and methane in seawater by “Headspace” method: Determination at trace level with an automatic headspace sampler
BT 
AF DONVAL, Jean-Pierre
   GUYADER, Vivien
AS 1:1;2:1;
FF 1:PDG-REM-GM-LCG;2:PDG-REM-GM-LCG;
C1 IFREMER, Ctr Brest, Lab Cycles Geochim & Ressources, Unite Geosci Marines Geosci Marines, Plouzane, France.
C2 IFREMER, FRANCE
SI BREST
SE PDG-REM-GM-LCG
IN WOS Ifremer jusqu'en 2018
IF 4.244
TC 11
UR https://archimer.ifremer.fr/doc/00354/46523/46287.pdf
LA English
DT Article
DE ;Gas;Seawater;Headspace method
AB “Headspace” technique is one of the methods for the onboard measurement of hydrogen (H2) and methane (CH4) in deep seawater. Based on the principle of an automatic headspace commercial sampler, a specific device has been developed to automatically inject gas samples from 300 ml syringes (gas phase in equilibrium with seawater). As valves, micro pump, oven and detector are independent, a gas chromatograph is not necessary allowing a reduction of the weight and dimensions of the analytical system. The different steps from seawater sampling to gas injection are described. Accuracy of the method is checked by a comparison with the “purge and trap” technique. The detection limit is estimated to 0.3 nM for hydrogen and 0.1 nM for methane which is close to the background value in deep seawater. It is also shown that this system can be used to analyze other gases such as Nitrogen (N2), carbon monoxide (CO), carbon dioxide (CO2) and light hydrocarbons.
PY 2017
PD JAN
SO Talanta
SN 0039-9140
PU Elsevier Science Bv
VL 162
UT 000389088700055
BP 408
EP 414
DI 10.1016/j.talanta.2016.10.034
ID 46523
ER

EF