Amir, The 142 nm surfur line is not on your IRIS 1000 unit (it is available on the XUV unit from Thermo though). Like Bryan said, I am not sure moving from 182 nm to 142 nm will help you that much. Shen LuanThermo Electron
Bryan Brattin <[log in to unmask]> wrote:The sulfur line at 180.731 has the large Ca line nearly on top of it,
while the one at 182.034 does not. We use 142.503, but I don't think
that will help Amir very much.
Bryan
Jim Batchelor wrote:
>Sulfur can be determined by ICP-AE. There are several wavelengths in the
>180-182nm range. One of them has a BIG Ca interence i just cant recall
>which one at this moment.
>
>If this is a radial IRIS, you should be able to do low ppms pretty easily.
>
>be careful of the digestion method. sulfur speciation could be an issue
>with mass transport if the S compound is significantly different from your
>Aq. S std mix.
>
>James Batchelor
>Zymark Corp
>
>-----Original Message-----
>From: Amir Liba [mailto:[log in to unmask]]
>Sent: Monday, April 28, 2003 2:44 PM
>To: [log in to unmask]
>Subject: Sulfur analysis
>
>
>Dear list members,
>We would like to analyze sulfur content in our protein and are wondering
>what would be the best method to do it with. We have a Thermo Iris 1000
>which is mostly utilized for heavy metal analysis. Is it possible to look
>at sulfur using ICP-AE and which concentrations should we aim at. Could
>ICP-MS be utilized?
>
>Amir
>
>Plan to Attend the 21st Annual ISLAR, the International Symposium on Laboratory Automation and Robotics
>October 19-22, 2003, Boston, MA
>Register Today at http://www.islar.com
>
>
--
Bryan L. Brattin
Research Associate
Trace Element Research Lab
Texas A&M University
(979) 845-1568
Mailing address:
TEXAS A&M UNIVERSITY
VAPH VMA BLDG, ROOM 107
COLLEGE STATION, TX 77843-4458
Attn: B. Brattin
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