University of Copenhagen
Associate Professor Riikka
Rinnan, at the University of Copenhagen, talks to us about her work using
Markes’ TD equipment to study Arctic ecosystems.
sort of studies do you undertake in your research group?
My research group studies
of biogenic volatile organic compounds (BVOCs) from natural ecosystems. One of our main goals is to
find out how ongoing climate change will affect BVOC emissions by conducting
In the experiments we mimic potential
future conditions, by subjecting plants and ecosystems to different experimental treatments. In recent years, our
main focus has been on Arctic ecosystems, which are experiencing rapidly
increasing temperatures and dramatic changes in vegetation.
long have you been using your UNITY-ULTRA? Have you been pleased with its
performance/reliability over that time?
We have been using UNITY-ULTRA for analysis of volatile organic
compounds since 2011. Once set up and running, it performed very
well. We’ve been very happy with its stability.
unique features of the UNITY-ULTRA make it suitable for your studies?
My favourite feature in this
system is the flexible autosampler. I like it that I can start a run with 100
samples, add tubes to the autosampler’s racks during the run, and take out those already analysed for conditioning.
Our work in the Arctic is
concentrated into the short snow-free period, when we measure in several places
at the same time. The number of adsorbent tubes is the factor limiting our
work, and by using the TC-20 for conditioning the tubes, we save a lot of time
and are thus able to sample more.
you been happy with the quality of conditioned & capped tubes you’ve
received from Markes?
Yes! We have been very happy
with the packed and pre-conditioned tubes, which Markes sells for a very
affordable price. Thanks to this, we’ve been able to purchase a large number of tubes, which
is the only way for us to sample BVOCs in several remote locations.
has been your experience of Markes’ application/technical support?
Work with BVOCs is not always
easy and there are many issues in sampling, calibration, and analysis that
require precision. Whenever there have been any doubts or questions, Markes’
technical support team has offered help – quickly and thoroughly.
you recommend Markes’ TD systems to other customers? If so, why?
I would be happy to recommend Markes’ TD systems. The products
are very functional, have the right price and come with excellent technical
The following paper describes Professor Rinnan’s work:
R. Rinnan, D. Gierth, M. Bilde, T. Rosenørn and A. Michelsen,
Off-season biogenic volatile organic compound emissions from heath mesocosms:
Responses to vegetation cutting, Frontiers in Microbiology, 2013, 4: 224, http://dx.doi.org/10.3389/fmicb.2013.00224.