Dear Colleagues,

We have been asked to analyze C and H in light 
(gaseous) hydrocarbons; probably mostly methane.

While I think I can handle the analytical part, I 
must admit difficulties in figuring out how to 
collect the samples in the first place. Normally 
samples are sent to us for analysis, but this 
time we have been asked for advice on collection 
as well, and I have no prior experience in that 
regard.

Can anybody direct me to suitable published 
sources (or is anybody willing to share his/her 
experience) on sampling light (gaseous) 
hydrocarbons as pore gases within sediment or 
dissolved in water? An added difficulty is that 
some of the samples might have to be taken under 
waters up to 60 m deep, where I forecast samples 
of hydrocarbons dissolved in the water column; 
those in soft bottom sediment and the ones in 
drill cores.

I admit this to be a wide ranging question, but 
any and all suggestions are most appreciated.

Cheers & Thanks,

Clemente



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Dr. Clemente Recio
Laboratorio de Isótopos Estables
Fac. de Ciencias
Univ. de Salamanca
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