Hi Chris, 
we found values up to +21 for d34S (quite upper limit) in a variety of antarctic sealife, such as Sea Ice Algae, Pycnogonida, Nudibranchia, Holothuria, Gastropods, Asteroidae.
Not in fish (<18 permil), bivalves or phytoplancton though.
Run on pyrocube with Isoprime100 in CNS mode.

On Sat, 8 Dec 2018 at 01:09, Chris Harrod <[log in to unmask]> wrote:
Hi folks

We've been running CNS on our new Pyro Cube/visION machine and have been really impressed with the results.
The last batch of marine fish livers however include values >21 ‰, which (possibly reflecting my ignorance of all things d34S) I thought was the upper limit for marine-derived S.

Although I think it is likely teething problems with us and the machine, I wondered if anyone in IsoGeochem land has seen d34S values in fish etc higher than 21 ‰? We are in a rather odd location (Humboldt Current), with lots of upwelling/productivity so strange things do happen here biologically that often have big isotopic impacts and turn established norms on their head.


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Professor Chris Harrod
(Fish & Aquatic Ecology)

Email: [log in to unmask]
Twitter: @chris_harrod
HarrodLab: Fish and Stable Isotope Ecology Laboratory
Instituto de Ciencias Naturales Alexander von Humboldt,
Universidad de Antofagasta,
Avenida Angamos 601, Antofagasta, Chile
Chile Mobile: +56 9 7399 7792
Chile Office: +56 55 2637400
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