Hya Will,
has any one looked at diffusion tubes versus.. pumped tubes?
we want to dosome soil gas monitoring within gas wells, but in the garden not in the prioperty...
pumping the gas with 110 volts etc seems to be a problem we could do without.
or does anyone know of a battery powered unit.. if so where can you hire them from?
-----Original Message-----
From: Contaminated Land Management Discussion List
[mailto:[log in to unmask]]On Behalf Of Watson,
Will - Environment
Sent: 17 October 2006 08:49
To: [log in to unmask]
Subject: Air sampling for VOCs
Many thanks to all those that offered assistance.
The consensus view is to use adsorptive tubes (Tenax) coupled to a low-flow
sample pump. Using Tedlar bags is a valid approach, but it may not achieve a
suitably low detection limit.
Thanks again,
Will Watson
Principal Contaminated Land Officer
Halton Borough Council
Tel - 0151 906 4833
Fax - 0151 471 7612
Email - [log in to unmask]
Rutland House, Halton Lea, Runcorn, WA7 2GW
www.halton.gov.uk
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