Dear Jennifer,

We are measuring the isotopic composition of single foraminifera, 
using small reaction tube + low blank CF-IRMS. By using the system, 
we can reduce the min. CaCO3 quantity to 0.2 ug. Please refer 
following paper for the detail.

Ishimura, T., U. Tsunogai, and T. Gamo (2004) Stable carbon and 
oxygen isotopic determination of sub-microgram quantities of CaCO3 to 
analyze each individual foraminiferal shell. Rapid Commun. Mass Spec. 
18, 2883-2888.

Sincerely,
Urumu




>Hello Everyone,
>
>I like to hear from anyone who is measuring the isotopic composition 
>of single foraminifera.  In particular, what type of equipment you 
>are using and any helpful hints you may have.  At the moment we can 
>run 20 to 15ug size samples using our Multicarb, but the ultimate 
>goal is 5ug of carbonate.
>
>Yours truly,
>Jennifer



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Urumu Tsunogai, PhD
Associate Professor
Earth and Planetary Sciences,
Graduate School of Science, Hokkaido University
N10 W8, Kita-ku, Sapporo, 060-0810, Japan
Phone: +81-11-706-3586; FAX:  +81-11-746-0394
E-mail: [log in to unmask]
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