Hello Jason and others,
We recently prepared a 13C-enriched (and D-enriched) icosanoic acid
methyl ester (C20:0), C21H42O2,
≥99% (methyl icosanoate, CAS # 1120-28-1) with delta13C = -6.91 ± 0.04‰
vs. VPDB and deltaD = +75.7 ± 1.1‰ vs. VSMOW. The compound is called
"icosanoic acid methyl ester #X" in our list at
http://mypage.iu.edu/~aschimme/hc.html. It is an inert waxy compound
that is useful for GC and EA applications.
In addition to this compound, we offer a variety of new esters and
alcohols. The latter include ethanols from C3 and C4 plant origin, and
anhydrous methanol where we distinguish between methyl hydrogen and
A note to all users of our reference materials: When preparing new
materials, we also re-measured many older materials. The enlarged
statistical basis resulted is some amended values. Please take a look
at the website where we now offer average values, ranges, and the
number of independent analyses.
Happy New Year to all,
Jason Newton wrote:
[log in to unmask]"
type="cite">Happy New Year everybody!
I have just attempted to order IAEA-309A and IAEA-309B from Vienna only
to learn that these are now exhausted - does anyone know if there are
any stocks of these or any other 13C-rich organic RM's anywhere?
Arndt Schimmelmann, Ph.D.
Department of Geological Sciences
1001 East 10th Street
Bloomington, IN 47405-1405
Ph (812) 855-7645
home (812) 339-3708
FAX (812) 855-7961
e-mail: [log in to unmask]
personal home page: http://www.indiana.edu/~geosci/people/faculty2.php?n=schimmelmann
home page of Biogeochemical Laboratories: